Synthesis of graft polyacrylamide with responsive self-assembling properties in aqueous media

被引：70

作者：

Petit, Laurence ^{[1
]}

Karakasyan, Carole ^{[1
]}

Pantoustier, Nadege ^{[1
]}

Hourdet, Dominique ^{[1
]}

机构：

[1] ESPCI, CNRS UMR 7615, UPMC, Lab Physicochim Polymeres & Milieux Disperses, F-75005 Paris, France

来源：

POLYMER | 2007年 / 48卷 / 24期

关键词：

responsive assemblies; hybrid networks; poly(N-isopropylacrylamide);

D O I：

10.1016/j.polymer.2007.09.040

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Graft copolymers with water-soluble backbones were prepared using two different routes: grafting onto and grafiing through techniques. The corresponding syntheses, leading to ionic or non-ionic copolymers, are described here in detail and exemplified with various primary structures obtained by changing the chemical nature of the side chains or the grafting ratio. Depending on the polyelectrolyte or neutral character of water-soluble backbones. viscosity-concentration dependences were determined at room temperature in dilute and semi-dilute regimes. Upon heating, PNIPA grafts dehydrate and self-a-re ate into hydrophobic microdomains which promote the formation of a physical network above 36 degrees C. The main features of the thermoassociating properties of the copolymers in aqueous solutions are described using different experimental approaches: rheology, calorimetry, NMR spectroscopy and neutron scattering (C) 2007 Elsevier Ltd. All rights reserved.

引用

页码：7098 / 7112

页数：15

共 31 条

[1] THE RHEOLOGY OF SOLUTIONS OF ASSOCIATING POLYMERS - COMPARISON OF EXPERIMENTAL BEHAVIOR WITH TRANSIENT NETWORK THEORY [J].