Superabsorbent nanocomposite based on methyl acrylic acid-modified bentonite and sodium polyacrylate: Fabrication, structure and water uptake

被引：41
作者：
Fu, Li-hua [1 ]
Cao, Ting-hua [1 ]
Lei, Zhi-wei [1 ]
Chen, Huang [1 ]
Shi, Ying-ge [1 ]
Xu, Chuanhui [1 ]
机构：
[1] Guangxi Univ, Sch Chem & Chem Engn, Guangxi Key Lab Petrochem Resource Proc & Proc In, Nanning 530004, Peoples R China
来源：
MATERIALS & DESIGN | 2016年 / 94卷
关键词：
Bentonite; Nanocomposite; Sodium polyacrylate; Water absorbency; SWELLING BEHAVIORS; DRUG-DELIVERY; COMPOSITE; HYDROGELS; MONTMORILLONITE; ALGINATE;
D O I：
10.1016/j.matdes.2016.01.014
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The present study demonstrates a feasible synthetic route to prepare a methyl acrylic acid-modified bentonite (MAABT)/sodium polyacrylate (SPA) superabsorbent nanocomposite, in which the MAABT serves as a reinforcing agent for SPA, as well as a cross-linking joint to enhance the network of the nanocomposite. The interfacial compatibilization effect of the MAABT was understood by copolymerization of sodium acrylate and methyl acrylate groups which were chemically bonded on the surface of bentonite. With the fine dispersion of MAABT and strong interfacial interaction, the MAABT/SPA nanocomposite achieved a water absorbency that was as high as 1287 g/g under accurate controls. Additionally, it comes out that the thermal stability and water retention capacity of the nanocomposites were also improved with the incorporation of MAABT. The suggested method for reactive compatibilization of MAABT and SPA may offer routes to the design of new organic-inorganic nanocomposites for various applications. (C) 2016 Elsevier Ltd. All rights reserved.
引用
收藏
页码：322 / 329
页数：8
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