Synthesis and unusual volume phase transition behavior of poly(N-isopropylacrylamide)-poly(2-hydroxyethyl methacrylate) interpenetrating polymer network microgel

被引：24

作者：

Zhang, Bo

Sun, Shengtong

Wu, Peiyi ^{[1
]}

机构：

[1] Fudan Univ, State Key Lab Mol Engn Polymers, Dept Macromol Sci, Shanghai 200433, Peoples R China

来源：

SOFT MATTER | 2013年 / 9卷 / 05期

基金：

美国国家科学基金会;

关键词：

INVERSE THERMOREVERSIBLE GELATION; DRUG-DELIVERY; 2-HYDROXYETHYL METHACRYLATE; N-ISOPROPYLACRYLAMIDE; HYDROGELS; GELS; RELEASE; PHEMA; DISPERSIONS; STRENGTH;

D O I：

10.1039/c2sm27355a

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The poly(N-isopropylacrylamide)-poly(2-hydroxyethyl methacrylate) (PNIPAM-PHEMA) interpenetrating polymer network (IPN) microgel was synthesized for the first time. FT-IR, AFM and DLS were used to help propose the mechanism of formation of the IPN microgel. Due to the hydrogen bonds between the NIPAM and HEMA monomers, polymerization of HEMA takes place earlier inside the PNIPAM microgel than on the outside. We also focus our research on the volume phase transition temperature (VPTT) of the IPN microgels obtained at different reaction times during polymerization. Due to the incorporation of the PHEMA chains, the VPTT of the IPN microgel exhibits a decreasing trend with increasing reaction time, which is unusual for an IPN microgel.

引用

页码：1678 / 1684

页数：7

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