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Acta Chimica Sinica ›› 2012, Vol. 70 ›› Issue (03): 272-276.DOI: 10.6023/A1107261 Previous Articles     Next Articles

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pH 敏感水凝胶聚甲基丙烯酸的超声合成

刘炜涛a, 刘学文a, 朱沈a, 刘忻沂a, 韩国志a,b   

  1. a 南京工业大学理学院应用化学系 南京 210009;
    b 东南大学生物电子学国家重点实验室 南京 210096
  • 投稿日期:2011-07-26 修回日期:2011-09-09 发布日期:2011-10-09
  • 通讯作者: 韩国志 E-mail:han@njut.edu.cn
  • 基金资助:

    中国博士后基金(No. 20100481084)及江苏省博士后基金(No. 1002006C)资助项目.

Ultrasonic Synthesis of pH-Sensitive PMAA Hydrogel

Liu Weitaoa, Liu Xuewena, Zhu Shena, Liu Xinyia, Han Guozhia,b   

  1. a Department of Applied Chemistry, College of Science, Nanjing University of Technology, Nanjing 210009;
    b State Key Laboratory of Bioelectronics, Southeast University, Nanjing 210096
  • Received:2011-07-26 Revised:2011-09-09 Published:2011-10-09
  • Supported by:

    Project was supported by the China Postdoctoral Science Foundation (No. 20100481084) and Jiangsu Province Postdoctoral Science Foundation (No. 1002006C).

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Using methacrylic acid as starting materials, N,N'-methylene bisacrylamide as a crosslinker and potassium persulfate as initiator, pH sensitive poly(methacrylic acid) (PMAA) hydrogel was synthesized by free radical polymerization under ultrasonic radiation. The molecular structure and chemical properties of hydrogel were characterized by IR and SEM. On this basis, impact of ultrasonication on swelling-deswelling of hydrogel was emphatically studied. Experimental results indicated that intelligent hydrogels prepared by ultrasonic synthesis have higher equilibrium swelling ratio and faster response comparing to traditional methods.

Key words: ultrasonic, pH sensitive, poly(methacrylic acid) (PMAA), hydrogel, synthesis