肖新才,张瑞连,熊小翠,胡蓉蓉,马文婷.高弹性聚丙烯酰胺水凝胶的制备及拉伸性能研究[J].中南民族大学学报自然科学版,2017,(1):47-51
高弹性聚丙烯酰胺水凝胶的制备及拉伸性能研究
Preparation and Tensile Property of Highly Elastic Polyacrylamide Hydrogel
  
DOI:
中文关键词: 聚丙烯酰胺  微凝胶  高弹性  微凝胶法  弹性模量
英文关键词: polyacrylamide  microgel  high elasticity  microgel method  elasticity modulus
基金项目:国家自然科学基金资助项目(21276287, 20976202);中央高校基金科研业务费专项资金资助项目(CZW15017);中南民族大学学术团队资助项目(XTZ15013)
作者单位
肖新才,张瑞连,熊小翠,胡蓉蓉,马文婷 中南民族大学 药学院武汉 430074 
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中文摘要:
      为了提高水凝胶的弹性性能, 采用微凝胶法制备了高弹性的聚丙烯酰胺(PAAM)水凝胶. 先采用沉降聚合法制备了PAAM微凝胶,再以此充当交联剂代替传统的化学交联剂和引发剂,制备了高机械性能的PAAM水凝胶.同时探讨了丙烯酰胺浓度、凝胶成型温度、微凝胶与水的体积比对PAAM水凝胶弹性性能的影响. 结果表明:随着丙烯酰胺的浓度的增大,凝胶柱的弹性模量变大;随微凝胶成型温度越高,形成的水凝胶的弹性模量越小;当微凝胶与水的体积比为1︰1时,水凝胶的弹性模量较大,增加或减少微凝胶的量均会使得水凝胶的弹性模量变小.
英文摘要:
      To improve the elasticity of the hydrogels, microgel method was applied to prepare highly elastic polyacrylamide(PAAM) hydrogel. PAAM microgels were prepared by sedimentation polymerization, then highly elastic PAAM hydrogel was prepared using the microgels as the crosslinker instead of the traditional chemical crosslinker and initiator. The effects of acrylamide concentration, polymerization temperature, volume ratio of the microgels and water on the elasticity of the hydrogels were investigated. The results indicated that the elasticity modulus of PAAM hydrogel increased with the increase of acrylamide concentration and decreased with the polymerization temperature. The modulus was largest when the volume ratio of the microgels and water was 1︰1, which would decrease regardless of decreasing or increasing the microgels content.
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