微凝胶增强两性复合水凝胶的制备与性能

doi:10.11944/j.issn.1000-0518.2015.04.140270

摘要/Abstract

摘要：

将核壳微凝胶包埋在两性基质中,制备了复合水凝胶(CAH)。研究发现,利用微凝胶与聚合物链之间的物理缠结作用,可以使复合凝胶具有致密的网络结构,力学性能显著提高;复合凝胶对pH和离子强度敏感,呈现出典型的两性聚电解质凝胶的溶胀行为。同时微凝胶的存在和特殊的复合结构,可赋予CAH两性凝胶基质所不具有的响应性,并实现在高温下快速响应。

关键词: 核壳微凝胶, 两性复合水凝胶, 高机械强度, pH及温度响应

Abstract:

The composite polyampholyte hydrogels (CAH) were prepared by inserting core-shell microgel particles into a bulk polyampholyte matrix. CAH gels with uniform and tight network structure have excellent mechanical performance due to the entanglement between microgels and network chains, and exhibit an antipolyelectrolyte effect and pH-sensitivity. And ionic strength drastically affects their swelling behaviors. Meanwhile, CAH gels show rapid shrinking rate and transmittance switch in response to the temperature change as a result of the incorporation of microgel particles.

Key words: core-shell microgels, composite polyampholyte hydrogels, high mechanical strength, pH sensitivity, temperature-sensitive

中图分类号:

O631.2

李鹏翀, 徐昆, 谭颖, 王丕新. 微凝胶增强两性复合水凝胶的制备与性能[J]. 应用化学, 2015, 32(4): 386-391.

LI Pengchong, XU Kun, TAN Ying, WANG Pixin. Synthesis and Characterization of Microgel-Reinforced Polyampholyte Hydrogels[J]. Chinese Journal of Applied Chemistry, 2015, 32(4): 386-391.

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