CO2-in-water emulsion-templated poly(vinyl alcohol) hydrogels using poly(vinyl acetate)-based surfactants

被引：67

作者：

Lee, Jun-Young ^{[1
]}

Tan, Bien ^{[1
]}

Cooper, Andrew I. ^{[1
]}

机构：

[1] Univ Liverpool, Dept Chem, Liverpool L69 7ZD, Merseyside, England

来源：

MACROMOLECULES | 2007年 / 40卷 / 06期

基金：

英国工程与自然科学研究理事会;

关键词：

D O I：

10.1021/ma0625197

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

We present here a methodology to produce highly porous cross-linked hydrogel materials by templating concentrated CO2-in-water (C/W) emulsions. Poly(vinyl alcohol) (PVA), blended PVA/PEG, and naturally derived chitosan materials were produced via this route. The technique can be carried out at moderate temperatures and pressures (25 degrees C, < 120 bar) using inexpensive hydrocarbon surfactants such as PVAc-based block copolymers which are composed of biodegradable blocks. This methodology opens up a new solvent-free route for the preparation of porous biopolymers, hydrogels, and composites, including materials which cannot readily be produced by foaming.

引用

页码：1955 / 1961

页数：7

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