Preparation of temperature-sensitive Xanthan/NIPA hydrogel using citric acid as crosslinking agent for bisphenol A adsorption

被引：46

作者：

Chen, Xi ^{[1
]}

Li, Panyu ^{[1
]}

Kang, Yan ^{[1
]}

Zeng, Xiaotong ^{[1
]}

Xie, Yi ^{[1
]}

Zhang, Yongkui ^{[1
]}

Wang, Yabo ^{[1
]}

Xie, Tonghui ^{[1
]}

机构：

[1] Sichuan Univ, Sch Chem Engn, Dept Pharmaceut & Biol Engn, Chengdu 610065, Sichuan, Peoples R China

来源：

CARBOHYDRATE POLYMERS | 2019年 / 206卷

基金：

中国国家自然科学基金;

关键词：

Hydrogel; Temperature-sensitive; Citric acid; Xanthan gum; Adsorption; Bisphenol A; THERMOSENSITIVE HYDROGEL; POLY(N-ISOPROPYLACRYLAMIDE) GEL; AQUEOUS-SOLUTION; CHITOSAN; GUM; POLYSACCHARIDE; ADSORBENTS; RELEASE; POLYMER; CARBON;

D O I：

10.1016/j.carbpol.2018.10.092

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

Hydrogels are emerging materials in pollutant treatment due to their high absorbability and environmental friendliness. Herein, a novel temperature-sensitive hydrogel based on xanthan gum (XG) and N-isopropylacrylamide (NIPA) was successfully synthesized in a water system using low-cost citric acid as crosslinking agent The lower critical solution temperature of the honeycomb macroporous XG/NIPA hydrogels was 40 degrees C. Meanwhile, the hydrogels had good water-absorption capacity and the swelling degree reached up to 70.1. Using XG/NIPA hydrogels to absorb bisphenol A (BPA), the maximum adsorption capacity was as high as 458 mg/g. The process was a multilayer adsorption and the rate-controlling step is chemisorption. Thus, the temperature-sensitive XG/NIPA hydrogel had great potential in absorbing BPA from aqueous solutions.

引用

页码：94 / 101

页数：8

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