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Studies on Structure and Physical Properties of Poly (lactic acid)-Based Biodegradable Polyesters

Research Project

Project/Area Number 11217209
Research Category

Grant-in-Aid for Scientific Research on Priority Areas

Allocation TypeSingle-year Grants
Review Section Science and Engineering
Research InstitutionToyohashi University of Technology

Principal Investigator

TSUJI Hideto  Faculty of Engineering, Associate Professor, 工学部, 助教授 (60227395)

Project Period (FY) 1999 – 2002
Project Status Completed (Fiscal Year 2002)
Budget Amount *help
¥13,800,000 (Direct Cost: ¥13,800,000)
Fiscal Year 2002: ¥4,000,000 (Direct Cost: ¥4,000,000)
Fiscal Year 2001: ¥3,100,000 (Direct Cost: ¥3,100,000)
Fiscal Year 2000: ¥2,600,000 (Direct Cost: ¥2,600,000)
Fiscal Year 1999: ¥4,100,000 (Direct Cost: ¥4,100,000)
KeywordsBiodegradable Polymers / Biodegradable Polyesters / Poly (lactic acid) s / Surface Treatment / Porous Materials / Polymer Blending / Mechanical Properties / Hydrophilicity / ポリ(ε-カプロラクトン) / 表面親水化 / 微粒子充填材料 / 酵素的加水分解 / 高次構造 / 生分解性高分子 / ポリラクトン / 酵素的分解 / 物理特性 / ブレンド / 吸水挙動
Research Abstract

The purposes of this study were(1)to develop new methods such as surface modification (alkaline treatment, biodegradable polymer coating), blending (hydrophilic biodegradable polymers, enantiomeric PLAs, and inorganic particles), and pore formation by the use of phase separation, to control physical properties and biodegradability of the poly (lactide) s [poly (lactic acid) s (PLAs)]-based biodegradable polyesters,(2)to investigate biodegradation mechanisms of the prepared materials, and(3)to develop a novel method for recycling PLAs to their monomers by the use of high-temperature and high-pressure water. It was found for biodegradable polyesters including PLAs that surface modification is effective both for acceleration and deceleration of their biodegradation without erosion of the core part of the materials, that blending is inclined to accelerate their biodegradation when the blends are phase-separated, and that pore formation is effective both for preparation of soft materials and acceleration of their biodegradation. Moreover, "restricted amorphous region" between the crystalline regions in spherulites was found to be much more hydrolysis-resistant than "free amorphous regions" outside spherulites and hydrolysis in the melt by the use of high-temperature and high-pressure water was shown to be a powerful method to recycling poly (L-lactide) [poly (L-lactic acid)] to L-lacticacid.

Report

(5 results)
  • 2002 Annual Research Report   Final Research Report Summary
  • 2001 Annual Research Report
  • 2000 Annual Research Report
  • 1999 Annual Research Report
  • Research Products

    (115 results)

All Other

All Publications (115 results)

  • [Publications] H.Tsuji, Y.Ikada: "Stereocomplex Formation between Enantiomeric Poly(ladic acid)s. //.Mechanical Properlies and Morphology of Solution-Cast Films"Polymer. 40. 6699-6708 (1999)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] H.Tsuji, Y.Ikada: "Properties and Morphology of Poly(L-lactide). 4Effects of Structural Parameters on Long-Thin In Vitro Hydrolysis of Poly(L-lactide) in Phosphate-Buffered Solution"Polymer Degradation and Stability. 67. 179-189 (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] H.Tsuji, A.Mizuno, Y.Ikada: "Properties and Morphology of Poly(L-lactide). 3Effects of Crystalinity on Long-Team In Vitro Hydrolysis of Poly(L-lactide) Film in Phosphate-Buffered Solution"Journal of Applied Polymer Science. 77. 1452-1464 (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] H.Tsuji, A.Mizuno, Y.Ikada: "Enhanced Crystallization of Poly(L-lactide-co-ε-capmlactone) during Storage at Room Temperature"Journal of Applied Polymer Science. 76. 947-953 (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] H.Tsuji, R.Smith, W.Bondield, Y.Ikada: "Porous Biodegradable Polyesters. 1. Preparation of Porous Poly(L-lactide) Films by Extraction of Poly(ethylene oxide) from their blends"Journal of Applied Polymer Science. 75. 629-637 (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] H.Tsuji: "In Vitro Hydrolysis of Blends from Enantiomeric Poly(ladide)s. 1. Well-stereocomplexed blend and non-blended films"Polymer. 41. 3621-3630 (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] L.Cartie, T.Okihara, Y.Ikada, H.Tsuji, J.Puiggali, B.Lotz: "Epitaxial Crystallization and Qystalline Polymorphism of Polyladides"Polymer. 41. 8909-8919 (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] J.Puiggali, Y.Ikada, H.Tsuji, L.Cartie, T.Okihara, B.Lotz: "The Frustrated Structure of Poly(Irlactide)"Polymer. 41. 8921-8930 (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] H.Tsuji, K.Sumida: "Poly(L-lactide). 5.Effects of Storage in Swelling Solvents on Physical Properties and Structure of Poly(L-lactide)"Journal of Applied Polymer Science. 79. 1582-1589 (2001)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] H.Tsuji, H.Muramatsu: "Blends of Aliphatic Polyesters. 5.Non-enzymatic and Enzymatic Hydrolysis of Blends from Hydrophobic Poly(L-lactide) and Hydrophllic Polyvinyl alcohol)"Polymer Degradation and Stability. 71. 403-413 (2001)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] H.Tsuji, S.Miyauchi: "Poly(L-lactide). &Effects of Qystallinity on Enzymatic Hydrolysis of Poly(L-lactide) without Free Amorphous Region"Polymer Degradation and Stability. 71. 415-424 (2001)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] H.Tsuji, S.Miyauchi: "Poly(L-lactide) : 7.Enzymatic Hydrolysis of Free and Restricted Amorphous Regions in Poly(L-lactide) Films with Different Ckystallinities and a Fixed Crystalline Thickness"Polymer. 42. 4463-4467 (2001)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] H.Tsuji, T.Ishizuka: "Porous Biodegradable Polyesters. 2. Physical Properties, Morphology, and Enzymatic and Alkaline Hydrolysis of Porous Poly(ε-caprolactone) Films"Journal of Applied Polymer Science. 80. 2281-2291 (2001)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] H.Tsuji, T.Ishizuka: "Porous Biodegradable Polyesters : 3. Preparation of Porous Poly(ε-caprolactone) Films from Blends by Selective Enzymatic Removal of Poly(L-lactide)"Macromolecular Bioscience. 1. 59-65 (2001)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] H.Tsuji, M.Suzuki: "In Vitro Hydrolysis of Blends from Enantiomeric Poly(lactide)s. 2. Well-stereocomplexed Fiber and Film"Sen'i Gakkaishi(繊維学会誌). 57. 198-202 (2001)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] H.Tsuji, S.Miyauchi: "Enzymatic Hydrolysis of Poly(lactide)s : Effects of Molecular Weight, Iflactide Content, and Enantiomeric and Diastereoisomeric Polymer Blending"Biomacromolecules. 2. 597-604 (2001)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] H.Tsuji, H.Muramatsu: "Blends of Aliphatic Polyesters. 4. Morphology, Swelling behavior, and Surface and Bulk Properties of Blends from Hydrophobic Poly(L-lacctide) and Hydrophilic Poly(vinyl alcohol)"Journal of Applied Polymer Science. 81. 2151-2160 (2001)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] H.Tsuji, K.Nakahara, K.Ikarashi: "Poly(L-lacctide) : 8. High Temperature Hydrolysis of Poly(L-lactide) Films with Different Ceystallinities and Crystalline Thicknesses in Phosohate-Buffered Solution"Macromolecular Material and Engineering. 286. 398-406 (2001)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] H.Tsuji, T.Ishizuka: "Blends of Aliphatic Polyesters : VL Lipase-Catalyzed Hydrolysis and Visualized Phase Structure of Biodegradable Blends from Poly(ε-capmlactone) and Poly(L-lactide)"International Journal of Biological Macromolecules. 29. 83-89 (2001)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] H.Tsuji, K.Suzuyoshi: "Environmental Degradation of Biodegradable Polyesters : 1. Poly(ε- caprolactone), Poly[(R)-3-hydroxybutyrate), and Poly(L-lactide) Films in Controlled Static Seawater."Polymer Degradation and Stability. 75. 347-355 (2002)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] H.Tsuji, K.Suzuyoshi: "Environmental Degradation of Biodegradable Polyesters : 2. Poly(ε-caprolactone), Poly[(R)-3-hydroxybutyrate), and Poly(L -lactide) Films in Natural Dynamic Seawater"Polymer Degradation and Stability. 75. 357-363 (2002)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] H.Tsuji: "Autocatalytic Hydrolysis of Amorphous-Made Polyladides : Effects of L-lactide Content, Tacticity, and Enantiomeric Polymer Blending"Polymer. 43. 1789-1796 (2002)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] H.Tsuji, K.Nakahara: "Poly(L-lactide) : IX Hydrolysis in Acid Media"Journal of Applied Polymer Science. 86. 186-194 (2002)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] N.Fukuda, H.Tsuji, Y.Ohnishi: "Physical Properties and Enzymatic Hydrolysis of Poly(L-lactide)-CaCO_3 Composites"Polymer Degradation and Stability. 78. 119-127 (2002)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] H.Tsuji, T.Yamada: "Blends of Aliphatic Polyestus. VIII. Effects of Poly(L-lactide-co-ε-caprolactone) on Enzymatic Hydrolysis of Poly(L-lactide), Poly(e-capmlactone), and Their Blend Film"Journal of Applied Polymer Science. 87. 412-419 (2003)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] H.Tsuji: "In Vitro Hydrolysis of Blends from Enantiorneric Poly(lactide)s. 4. Well-Homo-Crystallized Blend and Nonblerxled Films"Biomaterials. 24. 537-547 (2003)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] H.Tsuji, T.Ishida: "Poly(L-lactide) : X. Enhanced Surface Hydrophlicity and Chain-Scission Mechanisms of Poly(L-lactide) Film in Enzymatic, Alkaline, and Phosphate-Buffered Solutions"Journal of Applied Polymer Science. 87. 1628-1633 (2003)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] H.Tsuji, C.A.Del Carpio: "In Vitro Hydrolysis of Blends from Enantiomeric Poly(lactide)s. 3. Homo-Crystallized and Amorphous Blend Films"Biomacromolecules. 4. 7-11 (2003)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] H.Tsuji, T.Yamada, M.Suzuki, S.Itsuno: "Blends of Aliphatic Polyesters : VII. Effects of Poly(L-lactide-co-ε-caprolactone) on Morphobgy Structure, Crystallization, and Physical Properties of Blends of Poly(L-lactide) and Poly(e-caprolactone)"Polymer International. 52. 269-275 (2003)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] H.Tsuji, T.Ishida: "Surface Hydrophilicity and Enzymatic Hydmlyzability of Biodegradable Polyesters. 2. Effects of Hydrophilic Polymer Coating"Macromolecular Bioscience. 3. 51-59 (2003)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] H.Tsuji, I.Fukui: "Enhanced Thermal Stability of Poly(lactide s in the Melt by Enantiomeric Polymer Blending"Polymer. 44. 2891-2896 (2003)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] H.Tsuji, H.Daimon, K.Fujie: "A New Strategy for Recycling and Preparation of Poly(L-lactic acid) : Hydrolysis in the Melt"Biomacromolecules. 4. 835-840 (2003)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] H.Tsuji, T.Ishida, N.Fukuda: "Surface Hydrophilicity and Enzymatic Hydrolyzabllity of Biodegradable Polyesters. 1. Effects of Alkaline Treatment"Polymer International. 52. 843-852 (2003)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] K.Tomita, H.Tsuji, T.Nakajima, Y.Kikuchi, K.Ikarashi, N.Ikeda: "Degradation of poly(D-lactide) by a Thermophie"Polymer Degradation and Stability. 81. 167-171 (2003)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] H.Tsuji, K.Suzuyoshi: "Environmental Degradation of Biodegradable Polyesters : 4. Effects of Pores and Surface Hydrophilicity on Biodegradation of Poly(ε-caprolactone) and Poly[(R)-3-hydroxybutyrate)] Films in Controlled Seawater"Journal of Applied Polymer Science. (印刷中).

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] H.Tsuji, K.Suzuyoshi, Y.Tezuka, T.Ishida: "Treatment on Biodegradation of Poly(ε-caprolactone) and Poly[(R)-3-hydroxybutyrate) Films in Controlled Soil"Journal of Polymers and the Environment. (印刷中).

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] H.Tsuji, I.Fukui, H.Daimon, K.Fujie: "Poly(L-lactide) : XL Lactide Formation by Thermal Depolymerization of Poly(L-lactide) in a Closed System"Polymer Degradation and Stability. (印刷中).

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] H.Tsuji, Y.Ikada: "Current Trends in Polymer Science, vol4"Research Trends. 278 (1999)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] H.Tsuji: "Recent Research Developments in Polymer Science, vol4"Transworld Research Network. 145 (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] 辻 秀人: "グリーンプラスチック最新技術(井上義夫監修)"シーエムシー. 304 (2002)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] H.Tsuji: "Biopolymers, vol.4 (Polyesters III)"Wiley-VCH. 398 (2002)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] 辻 秀人: "生分解性高分子材料の科学"コロナ社. 242 (2002)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] H.Tsuji, Y.Ikada: "Stereocomplex Formation between Enantiomeric Poly (lactic acid) s. //. Mechanical Properties and Morphology of Solution-Cast Films"Polymer. Vol.40, No.24. 6699-6708 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] H.Tsuji, Y.Ikada: "Properties and Morphology of Poly (L-lactide). 4. Effects of Structural Parameters on Long-Term In Vitro Hydrolysis of Poly (L-lactide) in Phosphate-Buffered Solution"Polymer Degradation and Stability. Vol.67, NO.1. 179-189 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] H.Tsuji, A.Mizuno, Y.Ikada: "Properties and Morphology of Poly (L-lactide). 3. Effects of Crystallinity on Long-Term In Vitro Hydrolysis of Poly (L-lactide) Film in Phosphate-Buffered Solution"Journal of Applied Polymer Science. Vol.77, No.7. 1452-1464 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] H.Tsuji, A.Mizuno, Y.Ikada: "Enhanced Crystallization of Poly (L-lactide-co-ε-caprolactone) during Storage at Room Temperature"Journal of Applied Polyrner Science. Vol.76, No.6. 947-953 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] H.Tsuji, R.SMITH, W.Bonfield, Y.Ikada: "Porous Biodegradable Polyesters. 1. Preparation of Porous Poly (L-lactide) Films by Extraction of Poly (ethylene oxide) from their blends"Journal of Applied Polymer Science. Vol.75, No.5. 629-637 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] H.Tsuji: "In Vitro Hydrolysis of Blends from Enantiomeric Poly (lactide) s. 1. Well-stereocomplexed blend and non-blended films"Polymer. Vol.41, No.10. 3621-3630 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] L.Cartie, T.Okihara, Y.Ikada, H.Tsuji, J.Puiggali, B.Lotz: "Epitaxial Crystallization and Crystalline Polymorphism of Polylactides"Polymer. Vol.41, No.25. 8909-8919 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] J.Puiggali, Y.Ikada, H.Tsuji, L.Cartier, T.Okihara, B.Lotz: "The Frustrated Structure of Poly (L-lactide)"Polymer. Vol.41, No.25. 8921-8930 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] H.Tsuji, K.Sumida: "Poly (L-lactide). 5. Effects of Storage in Swelling Solvents on Physical Properties and Structure of Poly (L-lactide)"Journal of Applied Polymer Science. Vol.79, NO.9. 1582-1589 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] H.Tsuji, H.Muramatsu: "Blends of Aliphatic Polyesters. 5. Non-enzymatic and Enzymatic Hydrolysis of Blends from Hydropholbic Poly (L-lactide) and Hydrophilic Poly (vinyl alcohol)"Polymer Degradation and Stability. Vol.71, No.3. 403-413 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] H.Tsuji, S.Miyauchi: "Poly (L-lactide). 6. Effects of Crystallinity on Enzymatic Hydrolysis of Poly (L-lactide) without Free Amorphous Region"Polymer Degradation and Stability. Vol.71, No.3. 415-424 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] H.Tsuji, S.Miyauchi: "Poly (L-lactide) : 7. Enzymatic Hydrolysis of Free and Restricted Amorphous Regions in Poly (L-lactide) Films with Different Crystallinities and a Fixed Crystalline Thickness"Polymer. Vol.42, No.9. 4463-4467 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] H.Tsuji, T.Ishizaka: "Porous Biodegradable Polyesters. 2. Physical Properties, Morphology, and Enzymatic and Alkaline Hydrolysis of Porous Poly (ε-caprolactone) Films"Macromolecular Bioscience. Vol.1, No.2. 59-65 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] H.Tsuji, T.Ishizaka: "Porous Biodegradable Polyesters : 3. Preparation of Porous Poly (ε-caprolactone) Films from Blends by Selective Enzymatic Removal of Poly (L-lactide)"Journal of Applied Polymer Science. Vol.80, No.12. 2281-2291 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] H.Tsuji, M.Suzuki: "In Vitro Hydrolysis of Blends from Enantiomeric Poly (lactide) S. 2. Well-stereocomplexed Fiber and Film"Sen'i Gakkaishi. Vol.57, No.6. 198-202 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] H.Tsuji, S.Miyauchi: "Enzymatic Hydrolysis of Poly (lactide) s : Effects of Molecular Weight, L-lactide Content, and Enantiomeric and Diastereoisomeric Polymer Blending"Biomacromolecules. Vol.2, No.2. 597-604 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] H.Tsuji, H.Muramatsu: "Blends of Aliphatic Polyesters. 4. Morpholgy, Swelling behavior, and Surface and Bulk Properties of Blends from Hydrophobic Poly (L-lactide) and Hydrophilic Poly (vinyl alcohol)"Journal of Applied Polymer Science. Vol.81, No.9. 2151-2160 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] H.Tsuji, K.Nakahara, K.Ikarashi: "Poly (L-lactide) : 8. High-Temperature Hydrolysis of Poly (L-lactide) Films with Different Crystallinities and Crystalline Thicknesses in Phosphate-Buffered Solution"Macromolecular Materials and Engineering. Vol.286, No.7. 398-406 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] H.Tsuji, T.Ishizaka: "Blends of Aliphatic Polyesters : VI. Lipase-Catalyzed Hydrolysis and Visualized Phase Structure of Biodegaradable Blends from Poly (ε-caprolactone) and Poly (L-lactide)"International Journal of Biological Macromolecules. Vol.29, No.2. 83-89 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] H.Tsuji, K.Suzuyoshi: "Environmental Degradation of Biodegradable Polyesters : 1. Poly (ε-caprolactone), Poly [(R)-3-hydroxybutyrate), and Poly (L-lactide) Films in Controlled Static Seawater"Polymer Degradation and Stability. Vol.75, No.2. 347-355 (2002)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] H.Tsuji, K.Suzuyoshi: "Environmental Degradation of Biodegradable Polyesters : 2. Poly (ε-caprolactone), Poly [(R)-3-hydroxybutyrate), and Poly (L-lactide) Films in Natural Dynamic Seawater"Polymer Degradation and Stability. Vol.75, No.2. 357-363 (2002)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] H.Tsuji: "Autocatalytic Hydrolysis of Amorphous-Made Polylactides : Effects of L-lactide Content, Tacticity, and Enantiomeric Polymer Blending"Polymer. Vol.43, No.6. 1789-1796 (2002)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] H.Tsuji, K.Nakahara: "Poly (L-lactide) : IX. Hydrolysis in Acid Media"Journal of Applied Polymer Science. Vol.86, No.1. 186-194 (2002)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] N.Fukuda, H.Tsuji, Y.Ohnishi: "Physical Properties and Enzymatic Hydrolysis of Poly (L-lactide)-C_aCO_3 Composites"Polymer Degradation and Stability. Vol.78, No.1. 119-127 (2002)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] H.Tsuji, T.Yamada: "Blends of Aliphatic Polyesters. VIII. Effects of Poly (L-lactide-co-ε-caprolactone) on Enzymatic Hydrolysis of Poly (L-lactide), Poly (ε-caprolactone), and Their Blend Films"Journal of Applied Polymer Science. Vol.87, No.3. 412-419 (2003)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] H.Tsuji: "In Vitro Hydrolysis of Blends from Enantiomeric Poly (lactide) S. 4. Well-Homo-Crystallized Blend and Nonblended Films"Biomaterials. Vol.24, No.4. 537-547 (2003)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] H.Tsuji, T.Ishida: "Poly (L-lactide) : X. Enhanced Surface Hydrophilicity and Chain-Scission Mechanisms of Poly (L-lactide) Film in Enzymatic, Alkaline, and Phosphate-Buffered Solutions"Journal of Applied Polymer Science. Vol.87, No.10. 1628-1633 (2003)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] H.Tsuji, C.A.Del Carpio: "In Vitro Hydrolysis of Blends from Enantiomeric Poly (lactide) s. 3. Homo-Crystallized and Amorphous Blend Films"Biomacromolecules. Vol.4, No.1. 7-11 (2003)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] H.Tsuji, T.Yamada, M.Suzuki, S.Itsuno: "Blends of Aliphatic Polyesters : VII. Effects of Poly (L-lactide-co-ε-caprolactone) on Morphology, Structure, Crystallization, and Physical Properties of Blends of Poly (L-lactide) and Poly (ε-caprolactone)"Polymer International. Vol.52, No.2. 269-275 (2003)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] H.Tsuji, T.Ishida: "Surface Hydrophilicity and Enzymatic Hydrolyzability of Biodegradable Polyesters. 2. Effects of Hydrophilic Polymer Coating"Macromolecular Bioscience. Vol.3, No.1. 51-59 (2003)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] H.Tsuji, I.Fukui: "Enhanced Thermal Stability of Poly (lactide) s in the Melt by Enantiomeric Polymer Blending"Polymer. Vol.44, No.10. 2891-2896 (2003)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] H.Tsuji, H.Daimon, K.Fujie: "A New Strategy for Recycling and Preparation of Poly (L-lactic acid) : Hydrolysis in the Melt"Biomacromolecules. Vol.4, No.3. 835-840 (2003)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] H.Tsuji, T.Ishida, N.Fukuda: "Surface Hydrophilicity and Enzymatic Hydrolyzability of Biodegradable Polyesters. 1. Effects of Alkaline Treatment"Polymer Intemational. Vol.52, No.5. 843-852 (2003)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] K.Tomita, H.Tsuji, T.Nakajima, Y.Kikuchi, K.Ikarashi, N.Ikeda: "Degradation of poly (D-lactide) by a Thermophile"Polymer Degradation and Stability. Vol.81, No.1. 167-171 (2003)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] H.Tsuji, K.Suzuyoshi: "Environmental Degradation of Biodegradable Polyesters : 4. Effects of Pores and Surface Hydrophilicity on Biodegradation of Poly (ε-caprolactone) and Poly [(R)-3-hydroxybutyrate)] Films in Controlled Seawater"Journal of Applied Polymers Science, in press..

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] H.Tsuji, K.Suzuyoshi, Y.Tezuka, T.Ishida: "Environmental Degradation of Biodegradable Polyesters : 3. Effects of Alkali-Treatment on Biodegradation of Poly (ε-caprolactone) and Poly [(R)-3-hydroxybutyrate) Films in Controlled Soil"Journal of Polymers and the Environment, in press..

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] H.Tsuji, I.Fukui: "Poly (L-lactide) : XI. Lactide Formation by Thermal Depolymerization of Poly (L-lactide) in a Closed System"Polymer Degradation and Stability, in press.

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] Hideto Tsuji, Tamami Yamada: "Blends of Aliphatic Polyesters, VIII. Effects of Poly(L-lactide-CO-ε-caprolactone) on Enzymatic Hydrolysis of Poly(L-lactide), Poly(ε-caprolactone), and Their Blend Films"Journal of Applied Polymer Science. 87・3. 412-419 (2003)

    • Related Report
      2002 Annual Research Report
  • [Publications] Hideto Tsuji, Takuya Ishida: "Poly(L-lactide) : X Enhanced Surface Hydrophilicity and Chain-Scission Mechanisms of Poly(L-lactide) Film in Enzymatic, Alkaline, and Phosphate-Buffered Solutions"Journal of Applied Polymer Science. 87・10. 1628-1633 (2003)

    • Related Report
      2002 Annual Research Report
  • [Publications] Hideto Tsuji: "In Vitro Hydrolysis of Blends from Enantiomeric Poly(lactide)s 4 Well-Homo-Crystallized Blends and Nonblended Films"Biomaterials. 24・4. 537-547 (2003)

    • Related Report
      2002 Annual Research Report
  • [Publications] Hideto Tsuji, Carlos Adriel Del Carpio: "In Vitro Hydrolysis of Blends from Enantiomeric Poly(lactide)s 3 Homo-Crystallized and Amorphous Blend Films"Biomacromolecules. 4・1. 7-11 (2003)

    • Related Report
      2002 Annual Research Report
  • [Publications] Hideto Tsuji, Tamami Yamada, Masakazu Suzuki, Shinichi Itsuno: "Blends of Aliphatic Polyesters : VII Effects of Poly(L-lactide-CO-ε-caprolactone) on Marphology, Structure, Crystallization, and Physical Properties of Blends of Poly(L-lactide) and Poly(ε-lactone)"Polymer International. 52・2. 269-275 (2003)

    • Related Report
      2002 Annual Research Report
  • [Publications] Hideto Tsuji, Takuya Ishida: "Surface Hydrophilicity and Enzymatic Hydrolyzability of Biodegradable Polyesters. 2. Effects of Hydrophilic Polymer Coating"Macromolecular Bioscience. 3・1. 51-59 (2003)

    • Related Report
      2002 Annual Research Report
  • [Publications] Norio Fukuda, Hideto Tsuji, Yasushi Ohnishi: "Physical Properties and Enzymatic Hydrolysis of Poly(L-lactide)-CaCO_3 Composites"Polymer Degradation and Stability. 78・1. 119-127 (2002)

    • Related Report
      2002 Annual Research Report
  • [Publications] Hideto Tsuji, Kazumasa Nakahara: "Poly(L-lactide) : IX. Hydrolysis in Acid Media"Journal of Applied Polymer Science. 86・1. 186-194 (2002)

    • Related Report
      2002 Annual Research Report
  • [Publications] Hideto Tsuji: "Autocatalytic Hydrolysis of Amorphous-Made Polylactides : Effects of L-lactide Content, Tacticity, and Enantiomeric Polymer Blending"Polymer. 43・6. 1789-1796 (2002)

    • Related Report
      2002 Annual Research Report
  • [Publications] Hideto Tsuji, Kaori Suzuyoshi: "Environmental Degradation of Biodegradable Polyesters : 2. Poly(ε-caprolactone), Poly[(R)-3-hydroxybutyrate], and poly(L-lactide) Films in Natural Dynamic Seawater"Polymer Degradation and Stability. 75・2. 357-363 (2002)

    • Related Report
      2002 Annual Research Report
  • [Publications] Hideto Tsuji, Kaori Suzuyoshi: "Environmental Degradation of Biodegradable Polyesters : 1. Poly(ε-caprolactone), Poly[(R)-3-hydroxybutyrate], and poly(L-lactide) Films in Controlled Static Seawater"Polymer Degradation and Stability. 75・2. 347-355 (2002)

    • Related Report
      2002 Annual Research Report
  • [Publications] Hideto Tsuji, Takuya Ishida, Norio Fukuda: "Surface Hydrophilicity and Enzymatic Hydrolyzability of Biodegradable Polyesters. 1. Effects of Alkaline Treatment"Polymer International. (印刷中).

    • Related Report
      2002 Annual Research Report
  • [Publications] Hideto Tsuji, Kaori Suzuyoshi: "Environmental Degradation of Biodegradable Polyesters : 4. Effects of Pores and Surface Hydrophilicity on Biodegradation of Poly(ε-caprolactone), Poly[(R)-3-hydoxybutyrate] Films in Controlled Seawater"Journal of Applied Polymer Science. (印刷中).

    • Related Report
      2002 Annual Research Report
  • [Publications] Kosuke Tomita, Hideto Tsuji他4名: "Degradation of Poly(D-lactide) by a Thermophile"Polymer Degradation and Stability. (印刷中).

    • Related Report
      2002 Annual Research Report
  • [Publications] Hideto Tsuji, Ippei Fukui: "Enhanced Thermal Stability of Poly(lactide)s in the Melt by Enantiomeric Polymer Blending"Polymer. (印刷中).

    • Related Report
      2002 Annual Research Report
  • [Publications] Hideto Tsuji, Hiroyuki Daimon, Koichi Fujie: "A New Strategy For Recyding and Preparation of Poly(L-lactide)"Biomacromolecules. (印刷中).

    • Related Report
      2002 Annual Research Report
  • [Publications] 辻 秀人: "生分解性高分子材料の科学"コロナ社. 228 (2002)

    • Related Report
      2002 Annual Research Report
  • [Publications] 辻 秀人: "グリーンプラスチック最新技術(井上義夫監修)"シーエムシー. 17 (2002)

    • Related Report
      2002 Annual Research Report
  • [Publications] Hideto Tsuji, Takeharu Ishizaka: "Porous Biodegradable Polyesters. 2.Physical Properties, Morphology, and Enzymatic and Alkaline Hydrolysis of Porous Poly(ε-caprolactone)"Journal of Applied Polymer Science. 80・12. 2281-2291 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] Hideto Tsuji, Shinya Miyauchi: "Poly(L-lactide): 7. Enzymatic Hydrolysis of Free and Restricted Amorphous Regions in Poly(L-lactide) Films with Different Crystallinities and a Fixed Crystalline Thickness"Polymer. 42・9. 4463-4467 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] Hideto Tsuji, Kazumasa Nakamura, Kensaku Ikarashi: "Poly(L-lactide) : 8.High-Temperature Hydrolysis of Poly(L-lactide) Films with Different Crystallinities and Crystalline Thicknesses in Phosphate-Buffered Solution"Macromolecular Materials and Engineering. 286・7. 398-406 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] Hideto Tsuji, Kimika Sumida: "Poly(L-lactide).5.Effects of Storage in Swelling Solvents on Physical Properties and Structure of Poly(L-lactide)"Journal of Applied Polymer Science. 79・9. 1582-1589 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] Hideto Tsuji, Shinya Miyauchi: "Enzymatic Hydrolysis of Poly(lactide)s : Effects of Molecular Weight, L-lactide Content, and Enantiomeric and Diastereoisomeric Polymer Blending"Biomacromolecules. 2・2. 597-604 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] Hideto Tsuji, Masakazu Suzuki: "In Vitro Hydrolysis of Blends from Enantiomeric Poly(lactide)s.2.Well-stereocomplexed Fiber and Film"Sen'i Gakkaishi (繊維学会誌). 57・6. 198-202 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] Hideto Tsuji, Takeharu Ishizuka: "Porous Biodegradable Polyesters : 3.Preparation of Porous Poly(ε-caprolactone) Films from Blends by Selective Enzymatic Removal of Poly(L-lactide)"Macromolecular Bioscience. 1・2. 59-65 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] Hideto Tsuji, Takeharu Ishizuka: "Blends of Aliphatic Polyesters : VI.Lipase-Catalyzed Hydrolysis and Visualized Phase Structure of Biodegradable Blends from Poly(ε-caprolactone) and Poly(L-lactide)"International Journal of Biological Macromolecules. 29・2. 83-89 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] Hideto Tsuji, Hiroki Muramatsu: "Blends of Aliphatic Polyesters.4.Morpholgy, Swelling behavior, and Surface and Bulk Properties of Blends from Hydrophobic Poly(L-lactide) and Hydrophilic Poly(vinyl alcohol)"Journal of Applied Polymer Science. 81・9. 2151-2160 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] Hideto Tsuji, Shinya Miyauchi: "Poly(L-lactide). 6.Effects of Crystallinity on Enzymatic Hydrolysis of Poly(L-lactide) without Free Amorphous Region"Polymer Degradation and Stability. 71・3. 415-424 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] Hideto Tsuji, Hiroki Muramatsu: "Blends of Aliphatic Polyesters.5.Non-enzymatic and Enzymatic Hydrolysis of Blends from Hydrophobic Poly(L-lactide) and Hydrophilic Poly(vinyl alcohol)"Polymer Degradation and Stability. 71・3. 403-413 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] Hideto Tsuji: "Biopolymers, vol.4(Polyester2)"Wiley-VCH. 49 (2002)

    • Related Report
      2001 Annual Research Report
  • [Publications] Hideto Tsuji: "In Vitro Hydrolysis of Blends form Enantiomeric Poly(lactic acid)s.1.Well-Stereocomplexed Blend and Non-Blended Films"Polymer. 41・10. 3621-3630 (2000)

    • Related Report
      2000 Annual Research Report
  • [Publications] Hideto Tsuji,Kimika Sumida: "Poly(L-lactide),5.Effects of Storage in Swelling Solvents on physical Properties and Structure of Poly(L-lactide)"Journal of Applied Polymer Science. 79・9. 1582-1589 (2001)

    • Related Report
      2000 Annual Research Report
  • [Publications] Hideto Tsuji,shinya Miyauchi: "Poly(L-lactide).6..Effects of Crystalliniey on Enzymatic Hydrolysis of Poly(L-lactide)without Free Amorphous Region"Polymer Degradation and Stability. 71・3. 415-424 (2001)

    • Related Report
      2000 Annual Research Report
  • [Publications] Hideto Tsuji,Hiroki Muramatsu: "Blends of Aliphatic Polyesters.5.Non-enzymatic and Enzymatic Hydrolysis of Blends from Hydrophobic Poly(L-lactide) and Hydrophilic Polycvinyl alcohol."Polymer Degradation and Stability. 71・3. 403-413 (2001)

    • Related Report
      2000 Annual Research Report
  • [Publications] Hideto Tsuji,Hiroki Muramatsu: "Blends of Aliphatic Polyesters.4.Morphology, Swelling Behavior, and Surface amd Bulk Properties of Blends from Poly(L-lactide)and Poly(vinyl alcohol)"Journal of Applied Polymer Science. (印刷中).

    • Related Report
      2000 Annual Research Report
  • [Publications] Hideto Tsuji,Takeharu Ishizaka: "Porous Biodegradable Polyesters.2.Physical Properties, Morphology, and Enzymatic and Alkaline Hydrolysis of Porous Poly(ε-caprolactone)films"Journal of Applied Polymer Science. (印刷中).

    • Related Report
      2000 Annual Research Report

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Published: 1999-04-01   Modified: 2018-03-28  

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