摘要
以丙烯酸、膨润土和氢氧化钠为主要反应试剂,并添加引发剂过硫酸钾、交联剂N,N’-亚甲基双丙烯酰胺,通过水溶液聚合法合成了膨润土复合高吸水树脂,且在聚合过程中不通氮气。主要考察膨润土用量、丙烯酸的中和度、引发剂用量及交联剂用量对膨润土复合高吸水树脂吸水率的影响,并设计四因素三水平的正交试验,得到了合成优化方案。实验结果表明,膨润土为3.4g、丙烯酸中和度为45%、过硫酸钾为105mg、N,N’-亚甲基双丙烯酰胺为12mg时,膨润土复合高吸水树脂吸水率为1460mL/g。利用红外光谱对树脂的形态结构进行了表征;并考察了树脂的自然降解率,结果表明,30天时该高吸水树脂在土壤中的降解率达到51.8%。
The bentonite composite super absorbent resin was synthesized by aqueous solution polymerization,with acrylic acid,bentonite and sodium hydroxide as main reactants,potassium persulfate as initiator and N,N’-methylene bisacrylamide as crosslinking agent.Furthermore,nitrogen was not introduced during the polymerization process.The effects of the dosage of bentonite,initiator and crosslinking agent,and neutralization degree of acrylic acid on the water absorption of the bentonite super absorbent resin composite were mainly investigated,the orthogonal experiment of four factors and three levels was designed,and the synthesis optimization scheme was obtained.The experimental results show that when bentonite is 3.4g,neutralization degree of acrylic acid is 45%,potassium persulfate is 105mg and N,N’-methylene bisacrylamide is 12mg,the water absorption rate of the bentonite composite super absorbent resin is 1460mL/g.The morphological structure of the resin was characterized by infrared spectrum.The natural degradation rate of the resin was investigated,and the results showed that the degradation rate of the super absorbent resin in the soil reached 51.8%after 30 days.
作者
李东芳
杨慧英
赵艳波
张燕青
王志平
许平
LI Dong-fang;YANG Hui-ying;ZHAO Yan-bo;ZHANG Yan-qing;WANG Zhi-ping;XU Ping(School of Chemistry and Chemical Engineering,Jining Normal University,Inner Mongolia Key Laboratory of Mineral Soil Modification and Comprehensive Utilization,Institute of Applied Chemistry Technology,Jining Normal University,Wulanchabu 012000,Inner Mongolia,China;College of Chemistry and Environmental Science,Inner Mongolia Normal University,Hohhot 010022,Inner Mongolia,China;Department of Medicine and Health,Hohhot Vocational College,Hohhot 010051,Inner Mongolia,China)
出处
《合成材料老化与应用》
2022年第6期24-27,共4页
Synthetic Materials Aging and Application
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”(项目编号:NJZY19240)
关键词
膨润土
高吸水树脂
合成
降解
bentonite
super absorbent resin
synthesis
degradation
