淀粉-CTAC改性膨润土复合高吸水树脂的合成与表征  

Synthesis and Characterization of Starch-Bentonite Modified by CTAC Super Absorbent Resin Composite

作　　者：李东芳 石盈盈 李强 刘艳霞 王志平 LI Dong-fang;SHI Ying-ying;LI Qiang;LIU Yan-xia;WANG Zhi-ping(School of Chemistry and Chemical Engineering,Jining Normal University,Inner Mongolia Key Laboratory of Mineral Soil Modif ication and Comprehensive Utilization,Institute of Applied Chemistry Technology,Jining Normal University,Wulanchabu 012000,China;Hongjun Primary School in Tongliao,Tongliao 028000,China)

机构地区：[1]集宁师范学院化学与化工学院,内蒙古矿土土质改性及综合利用重点实验室,集宁师范学院应用化学技术研究所,内蒙古乌兰察布012000 [2]通辽红军小学,内蒙古通辽028000

出　　处：《化工管理》2022年第22期99-102,共4页Chemical Engineering Management

基　　金：内蒙古自治区高等学校科学研究项目“不糊化马铃薯淀粉/改性膨润土复合高吸水树脂的新工艺合成”(NJZY19240)。

摘　　要：以十六烷基三甲基氯化铵(CTAC)、膨润土、马铃薯淀粉和丙烯酸为原料,以过硫酸钾为引发剂、N,N’-亚甲基双丙烯酰胺为交联剂,在马铃薯淀粉不需糊化和无氮气保护的情况下,通过水溶液法合成了淀粉-CTAC改性膨润土复合高吸水树脂。文章探究了膨润土的改性条件,研究了马铃薯淀粉用量、引发剂用量、丙烯酸中和度、交联剂用量对复合高吸水树脂吸水率的影响,并用红外光谱对树脂的形态结构进行了表征。实验结果表明,在CTAC用量为4.0 g、改性温度为70℃下制得的改性膨润土性能较好;在改性膨润土为0.75 g、马铃薯淀粉为1.0 g、丙烯酸中和度为30%、引发剂为30 mg、交联剂为12 mg时,制得的高吸水树脂的吸水率高达1 460 mL/g。Starch-bentonite modified by CTAC super absorbent resin composite was synthesized by aqueous solution polymerization with CTAC,bentonite,potato starch and acrylic acid as raw materials,potassium persulfate as initiator and N,N’-methylene bisacrylamide as crosslinking agent,without gelatinization of potato starch,and without nitrogen protection.The modification conditions of bentonite were explored,and the effects of the dosage of potato starch,initiator,and crosslinking agent,and neutralization degree of acrylic acid on the water absorption of superabsorbent resin composite were studied.The morphological structure of the resin was characterized by infrared spectrum.The experimental results show that the modified bentonite with the dosage of CTAC of 4.0 g and the modification temperature of 70℃ has better performance.When modified bentonite is 0.75 g,potato starch is 1.0 g,neutralization degree of acrylic acid is 30%,initiator is 30 mg,crosslinking agent is 12 mg,the water absorption rate of super absorbent resin is as high as 1 460 mL/g.

关 键 词：马铃薯淀粉 CTAC 膨润土 高吸水树脂 合成 

分 类 号：O6-3[理学—化学]