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      Permanent link:
      https://www.ias.ac.in/article/fulltext/jcsc/126/06/1623-1627

    • Keywords

       

      Hydrogel; microemulsion polymerization; sensitivity; N-isopropylacrylamide.

    • Abstract

       

      A novel dual responsive hydrogelwas synthesized by inversemicroemulsion polymerization, using itaconic acid as pH-responsive monomer and N- isopropylacrylamide as thermo-responsivemonomer. pH- and temperature-sensitivity and dynamic viscoelasticity behaviour of the dual responsive hydrogels were investigated. Dual responsive hydrogels showed remarkable pH- and temperature-sensitivity and enhanced viscoelastic behaviour under high stress. Temperature-induced shrinkage range of the dual responsive hydrogels was higher and broader than that of the conventional poly(N-isopropylacrylamide) hydrogel. FTIR revealed the structure of dual responsive hydrogels. The as-synthesized regular and sphere-like hydrogel particles had the average particle size of 49 nm in the range of 30-78 nm.

    • Author Affiliations

       

      Tao Wan1 2 Min Xu2 Liyi Chen1 Daqing Wu3 Wenzhong Cheng2 Ruixiang Li2 Chuzhang Zou2

      1. State Key Laboratory of Geohazard Prevention and Geoenvironment Protection, Chengdu University of Technology, Chengdu 610059, China
      2. Mineral Resources Chemistry Key Laboratory of Sichuan Higher Education Institutions, Chengdu University of Technology, Chengdu 610059, China
      3. PetroChina Sichuan Petrochemical Co., Ltd., Chengdu 611930, China

    • Dates

       
      Published
      November 2014
      Manuscript received
      4 July 2014
      Manuscript revised
      24 August 2014
      Accepted
      30 August 2014

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