《中国康复理论与实践》

《中国康复理论与实践》 ›› 2000, Vol. 6 ›› Issue (02): 56-58.

• 理论与实践 • 上一篇    下一篇

离子型聚乙烯醇海绵的结构及性能

孙瑞焕; 毛立江; 胡元洁; 张颖; 王青; 朴东旭   

  1. 中国康复研究中心医用高分子研究室 北京 100077
  • 收稿日期:2000-02-20 出版日期:2000-06-25 发布日期:2000-06-25

Structure and properties of ionic PVA sponges

SUN Ruihuan,MAO Lijing,HU Yuanjie,et al   

  1. Chinese Journal of Rehabilitation Theory & Practice.-2000,6(2):56～58
  • Received:2000-02-20 Published:2000-06-25 Online:2000-06-25

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摘要： 以聚乙烯醇 ( PVA)为原料 ,采用缩醛化、发泡成型、接枝聚合的方法 ,制造了多孔泡沫海绵状吸液材料 :离子化聚乙烯醇海绵 ( i- PVA海绵 )。结构分析表明 ,i- PVA海绵具有三维多孔织构 ,由于引入了大量的阴离子基团 ,i- PVA海绵具有优异的吸液性能。临床使用证明 ,i- PVA海绵可用于白内障复明手术中的特殊用途。

关键词: 离子化聚乙烯醇海绵, 吸液性能, 三维多孔织构, 白内障复明

Abstract: A new kind of medical sponges,ionic polyvinyl alcohol sponges(i-PVA sponges)were prepared by surface-grafting of acrylic acid onto acetal-PVA sponges.i-PVA sponges obtained show excellent hydrophilicity and water-absorption.The i-PVA sponges are three dimentional porous network.Because there are great amount of carboxyl and sodium carboxylate groups on PVA molecule chains,the speed of water absorption and water-absorptivity is >2.9mm/s and >15 times respectively.That is,in the case of the cataract-extraction,the polyion-modified sponges much more advantageous than any traditional nonionic polymer sponges.

Key words: ionic polyvinyl alcohol sponges, water-absorption, three dimentional porous network, cataract-extraction