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Preparation of hollow polymer particles encapsulating functional substance and its application

Research Project

Project/Area Number 14205098
Research Category

Grant-in-Aid for Scientific Research (A)

Allocation TypeSingle-year Grants
Section一般
Research Field Composite materials/Physical properties
Research InstitutionKobe University

Principal Investigator

OKUBO Masayoshi  Kobe University, Fac.of Eng., Professor, 工学部, 教授 (30031131)

Co-Investigator(Kenkyū-buntansha) MINAMI Hideto  Kobe University, Fac.of Eng., Research Associate, 工学部, 助手 (20283872)
SUZUKI Toyoko  Kobe University, Fac.of Eng., Research Assistant, 工学部, 教務職員 (40314504)
Project Period (FY) 2002 – 2004
Project Status Completed (Fiscal Year 2004)
Budget Amount *help
¥41,990,000 (Direct Cost: ¥32,300,000、Indirect Cost: ¥9,690,000)
Fiscal Year 2004: ¥3,510,000 (Direct Cost: ¥2,700,000、Indirect Cost: ¥810,000)
Fiscal Year 2003: ¥9,230,000 (Direct Cost: ¥7,100,000、Indirect Cost: ¥2,130,000)
Fiscal Year 2002: ¥29,250,000 (Direct Cost: ¥22,500,000、Indirect Cost: ¥6,750,000)
KeywordsPolymer particle / hollow structure / encapsulating / Suspension polymerization / self-assembling / phase separation / interface / magnetic particle / 磁性 / 粒子径
Research Abstract

Polymer particles with hollow structures have gotten a lot of attention in many industrial fields. Such particles are used as microcapsules, weight-saving or thermal insulation agents, and are applied to hiding or opacifying agents in coating and molding compositions because of their high light-scattering ability. We had succeeded in preparing micron-sized, monodisperse, crosslinking polymer particles having a single hollow at the center by seeded polymerization. Similar hollow polymer particles were produced by suspension polymerization for divinylbenzene (DVB)/toluene droplets dissolving polystyrene though they were polydisperse. The formation of the hollow structure is based on the self- assembling of phase separated polymer at the interface of the droplet. The method is named the Self-assembling of Phase Separated Polymer (SaPSeP) method.
In this research, in order to clarify the formation mechanism of hollow particles by the SaPSeP method in more detail, the effects of phase separation of PDVB in the droplets, viscosity within the droplet and its size on the formation of the hollow structure were discussed. The phase separation in the early stage was required point for the formation of the hollow structure. Since the viscosity in the droplet is low at the low conversion, the PDVB can move and adsorb at the interface of the droplet. The mobility of PDVB microgels after the phase separation in polymerizing droplet was important factor for the formation of the hollow structure. The SaPSeP method was developed to produce composite particles encapsulating hinokitiol or magnetite. Moreover, the method was applied to the polyaddition reaction in a suspension system. The polyaddition reaction system satisfied the required conditions for the preparation of hollow particle by the SaPSeP method. In actual, cured epoxy resin particles having one hollow at the center were successfully prepared after evaporation of toluene.

Report

(4 results)
  • 2004 Annual Research Report   Final Research Report Summary
  • 2003 Annual Research Report
  • 2002 Annual Research Report
  • Research Products

    (39 results)

All 2005 2004 2003 Other

All Journal Article (22 results) Patent(Industrial Property Rights) (5 results) Publications (12 results)

  • [Journal Article] Production of cured epoxy resin particles having one hollow by polyaddition reaction2005

    • Author(s)
      南 秀人
    • Journal Title

      Polymer 46(4)

      Pages: 1051-1156

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] Production of cured epoxy resin particles having one hollow by polyaddition reaction2005

    • Author(s)
      H.Minami, M.Okubo, Y.Oshima
    • Journal Title

      Polymer 46

      Pages: 1051-1056

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] Influence of nonionic emulsifier included inside carboxylated polymer particles on the formation of multihollow structure by the2004

    • Author(s)
      岡田正弘
    • Journal Title

      Colloid Polym. Sci. 282(2)

      Pages: 193-197

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] Influence of nonionic emulsifier included inside carboxylated polymer particles on the formation of multihollow structure by the alkali/cooling method2004

    • Author(s)
      M.Okada, M.Okubo, T.Matoba
    • Journal Title

      Colloid Polym.Sci. 282

      Pages: 193-197

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] Influence of nonionic emulsifier included inside carboxylated polymer particles on the formation of multihollow structure by the alkali/cooling method2004

    • Author(s)
      M.Okada, M.Okubo, T.Matoba
    • Journal Title

      Colloid Polym.Sci. 282(2)

      Pages: 193-197

    • Related Report
      2004 Annual Research Report
  • [Journal Article] Production of cured epoxy resin particles having one hollow by polyaddition reaction2004

    • Author(s)
      Hideto Minami, Masayoshi Okubo, Yoshiteru Oshima
    • Journal Title

      Polymer 46(4)

      Pages: 1051-1156

    • Related Report
      2004 Annual Research Report
  • [Journal Article] Production of polystyrene/poly(ethylene glycol dimethacrylate) composite particles encapsulating hinokitiol2003

    • Author(s)
      大久保政芳
    • Journal Title

      J.Appl.Polym.Sci. 第89巻

      Pages: 706-710

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] Preparation of micron-sized, monodisperse, magnetic polymer particles2003

    • Author(s)
      大久保政芳
    • Journal Title

      J.Appl.Polym.Sci. 第88巻

      Pages: 428-433

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] Micron-sized, monodisperse polymer particles having reversibly transfomable shapes2003

    • Author(s)
      大久保政芳
    • Journal Title

      Progr.Colloid Polym.Sci. 第124巻

      Pages: 42-46

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] Production of hollow particles by suspension polymerization of divinylbenzene with nonsolvent2003

    • Author(s)
      大久保政芳
    • Journal Title

      Progr.Colloid Polym.Sci. 第124巻

      Pages: 54-59

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] Size effect monomer droplets on the production of hollow polymer particles by suspension polymerization2003

    • Author(s)
      大久保政芳
    • Journal Title

      Colloid Polym.Sci. 第281巻

      Pages: 302-307

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] Preparation of multihollow polymer particles by the alkali/cooling method under partial neutralization conditions2003

    • Author(s)
      大久保政芳
    • Journal Title

      Macromol.Symp. 第195巻

      Pages: 115-122

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] Influence of shell strength on shape transformation of micron-sized, monodisperse, hollow polymer particles2003

    • Author(s)
      大久保政芳
    • Journal Title

      Colloid Polym.Sci. 214・(3)

      Pages: 214-219

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] Phase separation in the formation of hollow particles by suspension polymerization for divinylbenzene/toluene droplets dissolving polystyrene2003

    • Author(s)
      大久保政芳
    • Journal Title

      Colloid Polym.Sci. 282・(2)

      Pages: 123-129

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] Production of polystyrene/poly(ethylene glycol dimethacrylate) composite particles encapsulating hinokitiol2003

    • Author(s)
      M.Okubo, H.Minami, Y.Jing
    • Journal Title

      J.Appl.Polym.Sci. 89

      Pages: 706-710

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] Preparation of micron-sized, monodisperse, magnetic polymer particles2003

    • Author(s)
      M.Okubo, H.Minami, T.Komura
    • Journal Title

      J.Appl.Polym.Sci. 88

      Pages: 428-433

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] Micron-sized, monodisperse polymer particles having reversibly transformable shapes2003

    • Author(s)
      M.Okubo, H.Minami, K.Morikawa
    • Journal Title

      Progr.Colloid Polym.Sci. 124

      Pages: 42-46

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] Production of hollow particles by suspension polymerization of divinylbenzene with nonsolvent2003

    • Author(s)
      M.Okubo, Y.Konishi, H.Minami
    • Journal Title

      Progr.Colloid Polym.Sci. 124

      Pages: 54-59

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] Size effect of monomer droplets on the production of hollow polymer particles by suspension polymerization2003

    • Author(s)
      M.Okubo, Y.Konishi, T.Inohara, H.Minami
    • Journal Title

      Colloid Polym.Sci. 281

      Pages: 302-307

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] Preparation of multihollow polymer particles by the alkali/cooling method under partial neutralization conditions2003

    • Author(s)
      M.Okubo, M.Okada, K.Shiba
    • Journal Title

      Macromol.Symp. 195

      Pages: 115-122

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] Influence of shell strength on shape transformation of micro-sized, monodisperse, hollow polymer particles2003

    • Author(s)
      M.Okubo, H.Minami, K.Morikawa
    • Journal Title

      Colloid Polym.Sci. 281

      Pages: 214-219

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] Phase separation in the formatio of hollow particles by suspention polymerization for divinylbenzene/toluene droplets dissolving polystyrene2003

    • Author(s)
      Y.Konishi, M.Okubo, H.Minami
    • Journal Title

      Colloid Polym.Sci. 281

      Pages: 123-129

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Patent(Industrial Property Rights)] 硬化剤内包微粒子、その製造方法、及び1液型エポキシ樹脂接着剤2005

    • Inventor(s)
      大久保 政芳, 南 秀人
    • Industrial Property Rights Holder
      神戸大学
    • Industrial Property Number
      2005-041416
    • Filing Date
      2005-02-17
    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Patent(Industrial Property Rights)] 蓄熱カプセル及びその利用2005

    • Inventor(s)
      大久保 政芳, 南 秀人
    • Industrial Property Rights Holder
      神戸大学
    • Industrial Property Number
      2005-041416
    • Filing Date
      2005-02-17
    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Patent(Industrial Property Rights)] 磁気感熱式電子ペーパー用の磁性微粒子2005

    • Inventor(s)
      大久保 政芳, 南 秀人
    • Industrial Property Rights Holder
      神戸大学
    • Industrial Property Number
      2005-041416
    • Filing Date
      2005-02-17
    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Patent(Industrial Property Rights)] 開口微粒子及びその製造方法2004

    • Inventor(s)
      大久保 政芳, 南 秀人
    • Industrial Property Rights Holder
      神戸大学
    • Industrial Property Number
      2004-077160
    • Filing Date
      2004-02-18
    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Patent(Industrial Property Rights)] 磁性中空微粒子及びその製造方法2004

    • Inventor(s)
      大久保 政芳, 南 秀人
    • Industrial Property Rights Holder
      神戸大学
    • Industrial Property Number
      2004-077161
    • Filing Date
      2004-02-18
    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Publications] 大久保政芳: "Production of polystyrene/poly(ethyene glycol dimethacrylate) composite particles encapsulating hinokitiol"J.Appl.Polym.Sci.. 第89巻. 706-710 (2003)

    • Related Report
      2003 Annual Research Report
  • [Publications] 大久保政芳: "Preparation of micron-sized, monodisperse, magnetic polymer particles"J.Appl.Polym.Sci.. 第88巻. 428-433 (2003)

    • Related Report
      2003 Annual Research Report
  • [Publications] 大久保政芳: "Micron-sized, monodisperse polymer particles having reversibly transfomable shapes"Progr.Colloid Polym.Sci.. 第124巻. 42-46 (2003)

    • Related Report
      2003 Annual Research Report
  • [Publications] 大久保政芳: "Production of hollow particles by suspension polymerization of divinylbenzene with nonsolvent"Progr.Colloid Polym.Sci.. 第124巻. 54-59 (2003)

    • Related Report
      2003 Annual Research Report
  • [Publications] 大久保政芳: "Size effect of monomer droplets on the production of hollow polymer particles by suspension polymerization"Colloid Polym.Sci.. 第281巻. 302-307 (2003)

    • Related Report
      2003 Annual Research Report
  • [Publications] 大久保政芳: "Preparation of multihollow polymer particles by the alkali/cooling method under partial neutralization conditions"Macromol.Symp.. 第195巻. 115-122 (2003)

    • Related Report
      2003 Annual Research Report
  • [Publications] 大久保政芳: "Influence of nonionic emulsifier included inside carboxylated polymer particles on the formation of multihollow structure by the alkali/cooling method"Colloid Polym.Sci.. 第282巻. 193-197 (2004)

    • Related Report
      2003 Annual Research Report
  • [Publications] M.Okubo, H.Minami, K.Morikawa: "Influence of shell strength on shape transformation of micron-sized, monodisperse, hollow polymer particles"Colloid Polym. Sci.,. 214・(3). 214-219 (2003)

    • Related Report
      2002 Annual Research Report
  • [Publications] Y.Konishi, M.Okubo, H.Minami: "Phase separation in the formation of hollow particles by suspension polymerization for divinylbenzene/toluene droplets dissolving polystyrene"Colloid Polym. Sci.,. 281・(2). 123-129 (2003)

    • Related Report
      2002 Annual Research Report
  • [Publications] M.Okubo, H.Minami, K.Morikawa: "Micron-sized, monodisperse polymer particles having reversibly transfomable shapes"Prog. Colloid Polym. Sci.,. (In press).

    • Related Report
      2002 Annual Research Report
  • [Publications] M.Okubo, Y.Konishi, H.Minami: "Production of hollow particles by suspension polymerization of divinylbenzene with nonsolvent"Prog. Colloid Polym. Sci.,. (In Press).

    • Related Report
      2002 Annual Research Report
  • [Publications] M.Okubo, Y.Konishi, T.Inohara, H.Minami: "Size effect of monomer droplets on the production of hollow polymer particles by suspension polymerization"Colloid Polym. Sci.,. (In press).

    • Related Report
      2002 Annual Research Report

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Published: 2002-04-01   Modified: 2016-04-21  

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