文献类型：期刊文献

英文题名：Preparation and properties of novel eco-friendly superabsorbent composites based on raw wheat bran and clays

作者：Gao, Jiande[1,2];Yang, Qian[1];Ran, Feitian[1];Ma, Guofu[1];Lei, Ziqiang[1]

第一作者：Gao, Jiande;高建德

通信作者：Lei, ZQ[1]

机构：[1]Northwest Normal Univ, Coll Chem & Chem Engn, Key Lab Polymer Mat Gansu Prov, Key Lab Ecoenvironm Related Polymer Mat,Minist Ed, Lanzhou 730070, Peoples R China;[2]Gansu Univ Chinese Med, Coll Pharm, Lanzhou 730000, Peoples R China

第一机构：Northwest Normal Univ, Coll Chem & Chem Engn, Key Lab Polymer Mat Gansu Prov, Key Lab Ecoenvironm Related Polymer Mat,Minist Ed, Lanzhou 730070, Peoples R China

通信机构：[1]corresponding author), Northwest Normal Univ, Coll Chem & Chem Engn, Key Lab Polymer Mat Gansu Prov, Key Lab Ecoenvironm Related Polymer Mat,Minist Ed, Lanzhou 730070, Peoples R China.

年份：2016

卷号：132

起止页码：739

外文期刊名：APPLIED CLAY SCIENCE

收录：;EI(收录号：20164302949737);Scopus(收录号：2-s2.0-84992124464);WOS:【SCI-EXPANDED(收录号:WOS:000385600600085)】；

基金：We thank to the program for Changjiang Scholars and Innovative Research Team in University (IRT15R56), the China Postdoctoral Science Foundation (2013M540778), Key Laboratory of Eco-Environment-Related Polymer Materials (Northwest Normal University) of Ministry of Education, and Key Laboratory of Polymer Materials of Gansu Province.

语种：英文

外文关键词：Superabsorbent composites; Laterite; Wheat bran; Loading/release of urea

摘要：In order to investigate the effect of clay types on the properties of superabsorbent composites, a series of novel eco-friendly clay-based superabsorbent composites were prepared by graft co-polymerization of acrylic acid (AA), wheat bran (WB) and various clays, such as laterite, palygorskite, diatomite and kaolin. Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), X-ray diffraction (XRD) and thermogravimetric analysis (TGA) were used to characterize the reaction mechanism and thermal stability of the superabsorbent composites. The properties of the superabsorbent composites were investigated. As a result, the incorporation of clay types had great influence on the properties of superabsorbent composites. The equilibrium water absorbency and the swelling rate in distilled water were always in the order: WB-g-PAA/laterite (647 g/g) > WB-g-PAA (548 g/g) > WB-g-PAA/palygorskite (513 g/g) > WB-g-PAA/diatomite (506 g/g) > WB-g-PAA/kaolin (437 g/g). The percentage of urea loading was 63 wt% (WB-g-PAA/kaolin), 81 wt% (WB-g-PAA/palygorskite), 77 wt% (WB-g-PAA/laterite) and 73 wt% (WB-g-PAA/diatomite) in 9 mg/mL of urea aqueous solution, respectively. Therefore, the WB-g-PAA/clays may have significant potential for agricultural and horticultural application, the types of clay could remarkably affect the properties of the superabsorbent composites type. (C) 2016 Elsevier B.V. All rights reserved.