Preparation and Swelling Kinetic Analysis of Poly (HPMC-co-AA-co-AM) Super Absorbent Resin

作     者：马砺 WANG Xin LIU Xixi WEI Gaoming GUO Ying MA Li;WANG Xin;LIU Xixi;WEI Gaoming;GUO Ying

作者机构：School of Safety Science and EngineeringXi’an University of Science and TechnologyXi'an 710054China Key Laboratory of Coal Fire Disaster PreventionXi’an University of Science and TechnologyXi'an 710054China School of Energy EngineeringXi’an Uni-versity of Science and TechnologyXi'an 710054China Yanzhou Coal Mining Co.Ltd.Zoucheng 237500China 

出 版 物：《Journal of Wuhan University of Technology(Materials Science)》 (武汉理工大学学报（材料科学英文版）)

年 卷 期：2024年第39卷第3期

页      面：790-799页

核心收录：

学科分类：08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学] 

基　　金：Funded by National Natural Science Foundation of China(No.52174206) Shaanxi Provincial Department of Education Youth Innovation Team Construction Scientific Research Plan Project(No.21JP074) Shaanxi Provincial Department of Education Youth Innovation Team Scientific Research Plan Project(No.22JP047) 

主　　题：super absorbent resin swelling kinetics water absorption graft copolymerization hydroxypropyl methyl cellulose 

摘      要：Super absorbent resin(SAR)is prepared by aqueous high temperature polymerization using hydroxypropyl methylcellulose(HPMC)as monomer backbone material,acrylic acid(AA)and acrylamide(AM)as the graft copolymer monomer,potassium persulfate(KPS)as the initiator to generate free radicals,and N,N`-methylenebisacrylamide(MBA)as cross-linking agent for cross-linking ***,the influence of individual factors on the water absorption is investigated,and these factors are mainly AA,AM,KPS,MBA,HPMC,and reaction *** optimized conditions are obtained by the experiment repeating for several *** water absorption multiplicity and salt absorption multiplicity under the conditions are 782.4 and 132.5 g/g,***,the effects of different temperatures and salt concentrations on its water absorption,as well as the swelling kinetics of SAR are *** is indicated the water-absorbing swelling process is mainly caused by the difference in water osmotic pressure and Na+concentration inside and outside the cross-linked molecular structure of the resin,which is not only consistent with the quasi-secondary kinetic model,but also with the Fick diffusion model.