2000 Fiscal Year Annual Research Report

ポリエステルの分子・材料設計に基づく分解のプログラム化

Research Project

Project/Area Number	11217210
Research Institution	Kyoto Institute of Technology
Principal Investigator	木村良晴京都工芸繊維大学, 繊維学部, 教授 (10132276)
Co-Investigator(Kenkyū-buntansha)	谷口育雄京都工芸繊維大学, 繊維学部, 助手 (30314305) 宮本真敏京都工芸繊維大学, 繊維学部, 助教授 (70149524)
Keywords	脂肪族ポリエステル / 生分解性ポリマー / β-ブチロラクトン / 分解機構 / 化学合成 / ブロックポリマー / 結晶核剤 / 時限分解
Research Abstract	(1)非晶性ラセミポリマーと結晶性キラルポリマーのブロック共重合:L-リンゴ酸とグリコール酸単位からなる6員環状モノマー3-[(benzyloxycarbonyl)methyl-1,4-dioxane-2,5-dione](BMD)、および、グリコール酸と[R]-3-ヒドロキシ酪酸単位からなる新規7員環状モノマー[R]一4-methyl-1,5-dioxepane-2,6-dione([R]一MDP)の2種の環状ジエステルモノマーを合成した。これらの環状ジエステルモノマーの開環重合性を検討するとともに、[RS]-β-butyrolactone(βBL)との開環共重合を行い、[RS]-poly(3-hydroxybutyrate)(PHB)の改質について検討を加えた。また、Polylactide-block-Poly(oxyethylene)(PLA-PEG)を合成し、水中に分散させて微粒子水溶液を調製した。この微粒子水溶液を基板上にキャストし、熱処理(60℃,2h)することにより、微粒子は破壊され、より微小な数ナノ径の粒子状態を経てバンド構造に変化した。その他、直接重縮合法によるポリ-L一乳酸(PLLA)、ポリグリコール酸(PGA)の合成についても顕著な成果を得ている。 (2)生分解性ポリマーの結晶化と分解性の制御:PBSの誘導体としてpoly(butylene succinate-co-L-lactate)(PBSL)を用いて、リパーゼPS(Pseudomonas cepacia由来)による酵素分解を検討し、その酵素分解機構を明らかにした。この酵素分解においては、Exo型の分解機構が明らかとなり、高分子のコンホメーションと酵素の活性部位への取り込みについて検討した。 (3)生分解性ポリマーの複合化:PLLAを芯に、[R]-PHBを鞘に有する複合繊維を作製し、その繊維物性並びに分解性について検討を行った。さらに、PLLA、PBSを芯部に、PET、PBTを鞘部に有する複合繊維の繊維特性並びに表面加水分解について検討した。

Research Products

(13 results)

All Other

All Publications (13 results)

[Publications] A.El Salmawy, et al.: "A Core-Sheath Bicomponent Fiber of Poly (butylene terephthalate)/Poly (butylene succinate-co-L-lactate). Utilization of a Biodegradable Polymer for Establishment of Waste-Free Denier-Decreasing Treatment of Polyester Fiber"Text.Res.J.. 70(11). 1011-1018 (2000)
[Publications] S.Hiki, et al.: "Synthesis and characterization of hydroxy-terminated [RS]-poly (3-hydroxybutyrate) and its utilization to block copolymerization with L-lactide to obtain a biodegradable thermoplastic elastomer"Polymer. 41. 7369-7379 (2000)
[Publications] T.Fujiwara, et al.: "Crystallization-Induced Morphological Changes of a Poly (L-lactide)/Poly (oxyethylene) Diblock Copolymer from Sphere to Band via Disk : A Novel Macromolecular Self-Organization Process from Core-Shell Nanoparticles on Surface"Macromolecules. 33(8). 2782-2785 (2000)
[Publications] S.I.Moon, et al.: "Melt Polycondensation of L-lactic Acid with Sn (II) Catalysts Activated by Various Proton Acids : A Direct Manufacturing Route to High Molecular Weight Poly (L-lactic acid)"J.Polym.Sci., Part A, Polym.Chem.. 38. 1673-1679 (2000)
[Publications] S.Nakano, et al.: "Stoichiometric Analysis of the Weight-Decrease in the Enzymatic Treatment of Cotton Fiber : A Guide to Real-Time Monitoring System for the Treatment"Sen'I Gakkaishi. 56(9). 456-461 (2000)
[Publications] K.Takahashi, et al.: "Melt/solid polycondensation of glycolic acid to obtain high-molecular-weight poly (glycolic acid)."Polymer. 41. 8725-8728 (2000)
[Publications] S.I.Moon, et al.: "Melt Polycondensation of L-lactic Acid with Sn (II) Catalysts Activated by Various Proton Acids : A Direct Manufacturing Route to High Molecular Weight Poly (L-lactic acid)"J.Polym.Sci., Part A, Polym.Chem.. 38. 1673-1679 (2000)
[Publications] T.Fujiwara, et al.: "Tailoring of Block Copolymers Based on the Stoichiometric Control of the End-Funnctionality of Telechelic Oligomers and the Utilization of Large-Scale Fractionation by Phase Fluctuation Chromatography : A Synthetic Strategy for the Preparation of End-Functionalized Poly (L-lactide)-block-poly (oxyethylene)"J.Polym.Sci., Part A, Polym.Chem.. 38. 2405-2414 (2000)
[Publications] S.I.Moon, et al.: "Melt Polycondensation of L-lactic Acid with Sn (II) Catalysts Activated by Various Proton Acids : A Direct Manufacturing Route to High Molecular Weight Poly (L-lactic acid)"J.Polym.Sci., Part A, Polym.Chem.. 38. 1673-1679 (2000)
[Publications] A.El Salmawy, et al.: "Properties of a Core-Sheath Conjugate Fiber Composed of Poly (butylene terephthalate) and Poly (L-lactic acid)"Sen-I Gakkaishi. 56(5). 241-248 (2000)
[Publications] T.Fujiwara, et al.: "Separation of a Diblock-Triblock Copolymer by Mixture Phase Fluctuation Chromatography"Polymer. 42(3). 1067-1074 (2001)
[Publications] A.El Salmawy, et al.: "Structure and Properties of Bicomponent Core-Sheath Fibers of Poly (ethylene terephthalate) and Biodegradable Aliphatic Polyesters"Text.Res.J.. 71(2). 145-152. (2001)
[Publications] T.Fujiwara, et al.: "Intriguing Morphology Transformation Due to the Macromolecular Rearrangement of Poly (L-lactide)-block-poly (oxyethylene) : From Coire-Shell Nanoparticles to Band Structures via Fragments of Unimolecular Size"Polymer. 42(4). 1515-1523 (2001)

2000 Fiscal Year Annual Research Report

ポリエステルの分子・材料設計に基づく分解のプログラム化

Principal Investigator

木村 良晴 京都工芸繊維大学, 繊維学部, 教授 (10132276)

Research Products

[Publications] A.El Salmawy, et al.: "A Core-Sheath Bicomponent Fiber of Poly (butylene terephthalate)/Poly (butylene succinate-co-L-lactate). Utilization of a Biodegradable Polymer for Establishment of Waste-Free Denier-Decreasing Treatment of Polyester Fiber"Text.Res.J.. 70(11). 1011-1018 (2000)

[Publications] S.Hiki, et al.: "Synthesis and characterization of hydroxy-terminated [RS]-poly (3-hydroxybutyrate) and its utilization to block copolymerization with L-lactide to obtain a biodegradable thermoplastic elastomer"Polymer. 41. 7369-7379 (2000)

[Publications] S.I.Moon, et al.: "Melt Polycondensation of L-lactic Acid with Sn (II) Catalysts Activated by Various Proton Acids : A Direct Manufacturing Route to High Molecular Weight Poly (L-lactic acid)"J.Polym.Sci., Part A, Polym.Chem.. 38. 1673-1679 (2000)

[Publications] S.Nakano, et al.: "Stoichiometric Analysis of the Weight-Decrease in the Enzymatic Treatment of Cotton Fiber : A Guide to Real-Time Monitoring System for the Treatment"Sen'I Gakkaishi. 56(9). 456-461 (2000)

[Publications] K.Takahashi, et al.: "Melt/solid polycondensation of glycolic acid to obtain high-molecular-weight poly (glycolic acid)."Polymer. 41. 8725-8728 (2000)

[Publications] S.I.Moon, et al.: "Melt Polycondensation of L-lactic Acid with Sn (II) Catalysts Activated by Various Proton Acids : A Direct Manufacturing Route to High Molecular Weight Poly (L-lactic acid)"J.Polym.Sci., Part A, Polym.Chem.. 38. 1673-1679 (2000)

[Publications] S.I.Moon, et al.: "Melt Polycondensation of L-lactic Acid with Sn (II) Catalysts Activated by Various Proton Acids : A Direct Manufacturing Route to High Molecular Weight Poly (L-lactic acid)"J.Polym.Sci., Part A, Polym.Chem.. 38. 1673-1679 (2000)

[Publications] A.El Salmawy, et al.: "Properties of a Core-Sheath Conjugate Fiber Composed of Poly (butylene terephthalate) and Poly (L-lactic acid)"Sen-I Gakkaishi. 56(5). 241-248 (2000)

[Publications] T.Fujiwara, et al.: "Separation of a Diblock-Triblock Copolymer by Mixture Phase Fluctuation Chromatography"Polymer. 42(3). 1067-1074 (2001)

[Publications] A.El Salmawy, et al.: "Structure and Properties of Bicomponent Core-Sheath Fibers of Poly (ethylene terephthalate) and Biodegradable Aliphatic Polyesters"Text.Res.J.. 71(2). 145-152. (2001)

[Publications] T.Fujiwara, et al.: "Intriguing Morphology Transformation Due to the Macromolecular Rearrangement of Poly (L-lactide)-block-poly (oxyethylene) : From Coire-Shell Nanoparticles to Band Structures via Fragments of Unimolecular Size"Polymer. 42(4). 1515-1523 (2001)

木村良晴京都工芸繊維大学, 繊維学部, 教授 (10132276)