粒状温敏性水凝胶的溶胀行为Study on the Swelling Processes of Temperature-sensitive Gel Beads
徐雅玲,李宝芳,曹堃,李伯耿
摘要(Abstract):
研究了具有温敏性的PNIPA粒状水凝胶在不同水溶液中的溶胀过程。考察了水溶液的离子强度、pH值、温度以及凝胶组成等因素对水凝胶溶胀速率和倍率的影响。研究发现,粒状PNIPA水凝胶粒子的溶胀很快,在1到2分钟内就能达到溶胀平衡。温度和凝胶的交联度是影响溶胀速率的主要因素。由于溶质改变了网络的亲水性或离子基团的作用强度,使得凝胶的溶胀速率和倍率也相应发生变化。
关键词(KeyWords): NIPA共聚物;粒状水凝胶;溶胀行为;温敏性
基金项目(Foundation):
作者(Author): 徐雅玲,李宝芳,曹堃,李伯耿
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