文献类型：期刊文献

英文题名：Assembly of Polyacrylamide-Sodium Alginate-Based Organic-Inorganic Hydrogel with Mechanical and Adsorption Properties

作者：Yue, Yiying[1] Wang, Xianhui[1] Wu, Qinglin[2] Han, Jingquan[3] Jiang, Jianchun[4,5]

第一作者：Yue, Yiying

通信作者：Han, JQ[1];Jiang, JC[2];Jiang, JC[3]

机构：[1]Nanjing Forestry Univ, Coll Biol & Environm, Nanjing 210037, Jiangsu, Peoples R China;[2]Louisiana State Univ, Agr Ctr, Sch Renewable Nat Resources, Baton Rouge, LA 70803 USA;[3]Nanjing Forestry Univ, Coll Mat Sci & Engn, Nanjing 210037, Jiangsu, Peoples R China;[4]Nanjing Forestry Univ, Coll Chem Engn, Nanjing 210037, Jiangsu, Peoples R China;[5]Chinese Acad Forestry, Inst Chem Ind Forest Prod, Nanjing 210042, Jiangsu, Peoples R China

年份：2019

卷号：11

期号：8

外文期刊名：POLYMERS

收录：;EI(收录号：20193207286265);Scopus(收录号：2-s2.0-85072544994);WOS:【SCI-EXPANDED(收录号:WOS:000484552900009)】；

基金：This research was funded by the National Natural Science Foundation of China (31770609), the Natural Science Foundation of Jiangsu Province for Outstanding Young Scholars (BK20180090), the Natural Science Research Project of Jiangsu Province (17KJB220007), the 333 Project Foundation of Jiangsu Province (BRA2018337), the Qing Lan Project of Jiangsu Province (2019), the Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD), and the Analysis and Test Center of Nanjing Forestry University.

语种：英文

外文关键词：hydrogel; inorganic nanofillers; interpenetrating polymer network; mechanical behavior; adsorption properties

摘要：Hydrogels have been widely used in water purification. However, there is not much discussion and comparison about the effects of different nanofillers on the reinforcement and adsorption performances of hydrogels, which can be subjected to rapid water flow and possess strong adsorption ability. In this work, polyacrylamide (PAAM)-sodium alginate (SA) interpenetrating polymer network-structured hydrogels were prepared by in situ polymerization. PAAM formed the first flexible network and SA constructed the second rigid network. Three kinds of inorganic nanoparticles including carbon nanotubes (CNTs), nanoclays (NCs), and nanosilicas (NSs) were incorporated into a PAAM-SA matrix via hydrogen bond. The obtained hydrogels exhibited a macroporous structure with low density (approximate to 1.4 g/cm(3)) and high water content (approximate to 83%). Compared with neat PAAM-SA, the hydrogels with inorganic nanoparticles possessed excellent mechanical strengths and elasticities, and the compression strength of PAAM-SA-NS reached up to 1.3 MPa at epsilon = 60% by adding only 0.036 g NS in a 30 g polymer matrix. However, CNT was the best filler to improve the adsorption capacity owing to its multi-walled hollow nanostructure, and the adsorption capacity of PAAM-SA-CNT was 1.28 times higher than that of PAAM-SA. The prepared hydrogels can be potential candidates for use as absorbents to treat wastewater.