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2013 Fiscal Year Final Research Report

THE DEVELOPMENT OF ADSORBENT FOR RARE METAL USING HYDROPHILIC HYDROPHOBIC TRANSITION OF THERMOSENSITIVE POLYMER

Research Project

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Project/Area Number 23560911
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Properties in chemical engineering process/Transfer operation/Unit operation
Research InstitutionHiroshima University

Principal Investigator

GOTOH TAKEHIKO  広島大学, 工学(系)研究科(研究院), 助教 (10274127)

Co-Investigator(Kenkyū-buntansha) SAKOHARA Shuji  広島大学, 大学院工学研究院, 教授 (80108232)
IIZAWA Takashi  広島大学, 大学院工学研究院, 准教授 (60130902)
Project Period (FY) 2011 – 2013
Keywords高分子ゲル / 感温性高分子 / イオン性高分子 / 吸着・脱着 / 親疎水転移 / 金属イオン
Research Abstract

Thermosensitive-ionic gel was made from copolymerization of N-isopropyl acrylamide (NIPAM) and Acrylic acid (AAC) as the adsorbate for metal ion. However, desorption ratio of the metal ion from the adsorbate was low since the interaction between the carboxyl group of the AAC and the metal ion was strong. Its response to the change of the temperature was low because the copolymerization with ionic component (AAC) reduced the thermo-sensitivity of the NIPAM. Therefore, a new adsorbate with the semi-IPN (inter penetrating network) structure was synthesized from NIPAM and polyvinyl alcohol (PVA). The PVA had weak interaction with the metal ion and the semi-IPN structure improved the thermosensitivity of the gel. Consequently, the adsorbate showed the same volume change behavior with the NIPAM gel. It also shows higher desorption ratio of the metal ion (40-60%) than the NIPAM-AAC copolymer gel does (20%). The reusable thermosensitive metal adsorbate has been successfully synthesized.

  • Research Products

    (13 results)

All 2014 2013 2012 2011

All Journal Article (6 results) (of which Peer Reviewed: 6 results) Presentation (7 results)

  • [Journal Article] Functional adsorbent as endocrine disruptor using pH-responsive polymer grafted on porous ethylene vinyl acetate disk2014

    • Author(s)
      Koji Teramoto, Sho Kimata, Toshiyuki Harada, Shuji Sakohara
    • Journal Title

      Chem. Eng. J.

      Volume: 246 Pages: 114-121

    • DOI

      10.1016/j.cej.2014.02.048

    • Peer Reviewed
  • [Journal Article] Adsorption and desorption of calcium ions by temperature swing with copolymer of thermosensitive and chelating components grafted on porous ethylene vinyl acetate disk2014

    • Author(s)
      S. Sakohara, Y. Kuriyama, K. Kobayashi, T. Gotoh, T. Iizawa
    • Journal Title

      React. Func. Polym.

      Volume: 73 Pages: 1632-1638

    • DOI

      10.1016/j.reactfunctpolym.2013.09.006

    • Peer Reviewed
  • [Journal Article] Separation of bisphenol-A by unimolecular micelles formed by pH-responsive polymer grafted onto polypropylene nonwoven fabrics2014

    • Author(s)
      K. Teramoto, S. Kimata, T. Harada, M. Chuman, S. Sakohara
    • Journal Title

      Chem. Eng. J.

      Volume: 236 Pages: 490-497

    • DOI

      10.1016/j.cej.2013.10.056

    • Peer Reviewed
  • [Journal Article] Consolidation of suspended particles by using dual ionic thermosensitive polymers with incorporated a hydrophobic component2013

    • Author(s)
      S. Sakohara, T. Kawachi, T. Gotoh, T. Iizawa
    • Journal Title

      Separation and Purification Technology

      Volume: 106 Pages: 90-96

    • DOI

      10.1016/j.seppur.2012.12.030

    • Peer Reviewed
  • [Journal Article] Synthesis of porous poly[oligo(ethylene glycol)methyl ether methacrylate] gels that exhibit thermosensitivity in highly concentrated NaCl solution2012

    • Author(s)
      T. Iizawa, D. Yamamoto, T. Gotoh, S. Sakohara
    • Journal Title

      Polymer

      Volume: 53 Pages: 3417-3420

    • DOI

      10.1016/j.polymer.2012.06.016

    • Peer Reviewed
  • [Journal Article] Thermosensitive properties of amphiphilic N,N-dimethylacrylamide gel grafted with thermosensitive oligo (N-isopropylacrylamide)2012

    • Author(s)
      A. Takahashi, S. Sakohara
    • Journal Title

      J. Appl. Polym. Sci.

      Volume: 124 Pages: 1208-1216

    • DOI

      10.1002/app.35086

    • Peer Reviewed
  • [Presentation] Investigation of The Adsorption Properties of Sulfobetaine Gel With Different Number of Groups Spacer Based on its Transition and Swelling Behavior2014

    • Author(s)
      E. O. Ningrum, Y.Murakami, Y. Ohfuka, S. Sakohara
    • Organizer
      化学工学会第79年会
    • Place of Presentation
      岐阜市
    • Year and Date
      2014-03-20
  • [Presentation] semi-IPN感温性ゲルへの金属イオンの吸脱着特性2013

    • Author(s)
      平原龍馬, 後藤健彦, 迫原修治
    • Organizer
      化学工学会中国四国支部大会大学院生発表会
    • Place of Presentation
      宇部市
    • Year and Date
      2013-12-13
  • [Presentation] NIPA-PVAセミIPNゲルへの金属イオンの感温吸着特性2013

    • Author(s)
      平原龍馬, 後藤健彦, 迫原修治
    • Organizer
      第15回化学工学会学生発表会
    • Place of Presentation
      北九州市
    • Year and Date
      2013-03-02
  • [Presentation] Development of a novel adsorbent using zwitteirionic betaine gels2012

    • Author(s)
      E. O. Ningrum T. Gotoh, T. Iizawa, S. Sakohara
    • Organizer
      10^<th> Japan-Korea Symposium on Materials & Interfaces
    • Place of Presentation
      Kyoto
    • Year and Date
      2012-11-08
  • [Presentation] イオン基を導入した感温性ゲルの温度変化による金属イオン吸脱着特性2012

    • Author(s)
      後藤健彦, 岩本賢悟, 迫原修治
    • Organizer
      化学工学会第44回秋季大会
    • Place of Presentation
      仙台市
    • Year and Date
      2012-09-21
  • [Presentation] Repeated Adsorption of Metal Ions onto Thermosensitive Ionic Hydrogel by Temperature Swings2012

    • Author(s)
      T. Gotoh, K. Iwamoto, S. Sakohara
    • Organizer
      Polymer Networks Group 21^<st> Conference
    • Place of Presentation
      Jackson Hall, USA
    • Year and Date
      2012-08-14
  • [Presentation] イオン基を導入した感温性ゲルへのアルカリ金属の吸脱着特性2011

    • Author(s)
      岩本賢悟, 後藤健彦, 迫原修治
    • Organizer
      第4回化学工学3支部合同福井大会
    • Place of Presentation
      福井市
    • Year and Date
      2011-12-08

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Published: 2015-07-16  

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