Thermo-sensitive poly(N-vinylcaprolactam-co-acetoacetoxyethyl methacrylate) microgels:: 1 -: synthesis and characterization

被引：119

作者：

Boyko, V ^{[1
]}

Pich, A

Lu, Y

Richter, S

Arndt, KF

Adler, HJP

机构：

[1] Tech Univ Dresden, Inst Phys Chem & Electrochem, D-01062 Dresden, Germany

[2] Tech Univ Dresden, Inst Macromol Chem & Textile Chem, D-01062 Dresden, Germany

来源：

POLYMER | 2003年 / 44卷 / 26期

关键词：

N-vinylcaprolactam; thermosensitive microgel; functional monomer;

D O I：

10.1016/j.polymer.2003.09.037

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

In the present paper, polymeric microgels have been prepared by surfactant-free emulsion co-polymerization of acetoacetoxyethyl methacrylate (AAEM) and N-vinylcaprolactam (VCL) in water with water-soluble azo-initiator 2,2'-azobis(2-methylpropioamidine) dihydrochloride (AMPA). It was found that the particle diameter decreased gradually when higher amounts of AAEM were used in monomer mixture. Obtained microgels possess lower critical solution temperature (LCST) in water solutions, so rapid decrease of the particle size was observed at elevated temperatures. As was found using simultaneous static and dynamic light scattering, microgels undergo soft sphere-hard sphere transition during heating. (C) 2003 Elsevier Ltd. All rights reserved.

引用

页码：7821 / 7827

页数：7

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