Preparation and characterization of a novel pH-, thermo-, and ionic strength-responsive hydrogels based on xanthan gum-poly(aspartic acid)

被引：17
作者：
Yang, Jun [1 ]
Fang, Li [1 ]
Wang, Fang [1 ]
Tan, Tianwei [1 ]
机构：
[1] Beijing Univ Chem Technol, Beijing Key Lab Bioproc, Beijing 100029, Peoples R China
来源：
JOURNAL OF APPLIED POLYMER SCIENCE | 2007年 / 105卷 / 02期
关键词：
hydrogels; poly(aspartic acid); xanthan gum; stimuli-sensitive polymers; swelling;
D O I：
10.1002/app.25571
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
A series of interpenetrating polymer networks (IPN) hydrogels with different compositions that based on xanthan gum (XG) and poly(aspartic acid) (PASP) were synthesized. The effects of various external surrounding stimuli, including pH, temperature, and ionic strength on XG-PASP hydrogels swelling properties were investigated. Chemical structural changes of the IPN hydrogels were characterized by Fourier transform infrared spectroscopy (FT-IR), differential scanning calorimetry (DSC), transmission electron microscopy (TEM), and swelling ratio measurement. The swelling process was found to be a Fickian diffusion and reached swelling equilibrium quickly. It was found that the feed composition of PASP was an important factor that affected the properties of IPN hydrogels. (c) 2007 Wiley Periodicals, Inc.
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收藏
页码：539 / 546
页数：8
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