Swelling behavior of chitosan/poly(acrylic acid) complex

被引：24

作者：

Nge, TT ^{[1
]}

Hori, N ^{[1
]}

Takemura, A ^{[1
]}

Ono, H ^{[1
]}

机构：

[1] Univ Tokyo, Grad Sch Agr & Life Sci, Dept Biomat Sci, Bunkyo Ku, Tokyo 1138657, Japan

来源：

JOURNAL OF APPLIED POLYMER SCIENCE | 2004年 / 92卷 / 05期

关键词：

chitosan; poly(acrylic acid); hydrogels; networks; photopolymerization;

D O I：

10.1002/app.20252

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

This study investigates the improved swelling behavior of chitosan/poly(acrylic acid) complex by solvent (methanol, ethanol, and acetone) extraction. The complex is developed by photoinitiated free-radical polymerization of acrylic acid in the presence of chitosan. The swelling ratio of the complexes depends on the cosolvency effect of poly(acrylic acid) to the extracted solvent, which in turn affects the polymer network structure and ionic states characterized by dynamic force microscopy (DFM), Raman, and FT-IR spectroscopy. The DFM investigation displays the improved structural changes of the polymer network structure after solvent extraction and its relation to the improved swelling property of the chosen system in different environmental conditions (pH, solvent, and salt concentration) are discussed. A high swelling ratio of about 600 times its dry weight is observed in water as well as in low salt and solvent concentration after methanol extraction. (C) 2004 Wiley Periodicals, Inc.

引用

页码：2930 / 2940

页数：11

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