摘要
考察了亲水 /疏水半互穿网水凝胶在不同体积分数的丙酮 /水溶液中的溶胀或消溶胀情况 .随着聚丙烯酸 (PAAc)网络内疏水改性聚电解质高分子链N -正十二烷基聚 (4 -乙烯吡啶 )溴化盐 (QPVPD)含量的增加 ,半互穿网水凝胶内部的物理缠绕和疏水相互作用增强 ,致使含QPVPD较多的样品胶在丙酮体积分数为 50 %附近溶胀率较大 .随着丙酮体积分数继续增大 ,所有样品胶迅速收缩 .该凝胶的溶胀是动力学平衡过程 ,在丙酮 /水溶液中 ,其溶胀率需 1周才达到最大值 .随着网络内QPVPD含量的增加 。
The new kind of hydrophilic-hydrophobic semi-IPN hydrogel was prepared by using interpenetrating polymer networks (IPN) technique. Poly (acrylic acid) /N-dodecyl poly(4-vinyl pyridine) (PAAc/QPVPD) semi-IPN hydrogel was synthesized and it is an intelligent polymer material. The Stimuli-response of hydrophilic-hydrophobic semi-IPN (PAAc/QPVPD) gel on acetone-water mixture was investigated. The PAAc/QPVPD gel was a hydrogel with the QPVPD chains, which were entangled with the PAAc polymer network and were fixed in the gel. With the increasing of the percent of acetone, its SR decreases rapidly at 60 percent of acetone. And SR of the semi-IPN hydrogel with the higher amount of QPVPD reaches a maximum at 50 percent of acetone. Swelling and deswelling is a equilibrium process of kinetics. These properties of the gel are related to both the change of hydrophilic interaction and hydrophobic interaction.
出处
《东北师大学报（自然科学版）》
CAS
CSCD
北大核心
2001年第2期47-51,共5页
Journal of Northeast Normal University(Natural Science Edition)
基金
国家自然科学基金资助项目 ( 2 9574 1 60 )
河南省教委科研规划项目 ( 971 50 0 1 7)
