数字农科院2.0

Swelling properties and kinetics of starch-g-poly(acrylic acid) hydrogels

文献类型： 外文期刊

作者： Shi, Jiyan;Fan, Liren;Song, Jiqing;Bai, Wenbo

作者机构：

关键词： cassava starch;hydrogels;swelling kinetics;mechanism comparison

期刊名称： ADVANCES IN CHEMICAL ENGINEERING II, PTS 1-4

ISSN： 1022-6680

年卷期： 2012 年 550-553 卷

页码：

收录情况： SCI

摘要： Starch-g-poly(acrylic acid) (CSt-g-PAA) hydrogels were prepared from cassava starch and acrylic acid by graft polymerization. The hydrogels were characterized by Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD) and thermogravimetric-differential scanning calorimetry (TG-DSC). Additionally, the water absorbency and hygroscopic swelling properties of the hydrogels were investigated respectively. The two processes were simulated using mathematical modes. The results revealed that the crystal structure of starch was destroyed. At 40 degrees C and relative humidity 90% (90% RH), the samples (starch mass 15%, 50%) have a better performance of the moisture absorption. Hygroscopic rate declined with the increase of relative humidity.

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