“生物降解型水凝胶的制备与表征”综合实验设计  

Comprehensive Experimental Design of“Preparation and Characterization of Biodegradable Hydrogels”

作　　者：雷海波 杨冰妍 魏世辉 任丽梅 刘文 LEI Hai-Bo;YANG Bing-Yan;WEI Shi-Hui;REN Li-Mei;LIU Wen(Department of Basic Science,Tianjin Agricultural University,Tianjin 300392,China)

机构地区：[1]天津农学院基础科学学院,天津300392

出　　处：《化学教育（中英文）》2024年第6期30-35,共6页Chinese Journal of Chemical Education

基　　金：教育部产学合作协同育人项目(220506537061804);天津市劳动教育教学研究中心教学研究项目(JXYJGX-2023ZD09);天津市高等学校大学生创新创业训练计划项目(202310061067)。

摘　　要：针对材料化学综合实验本科教学,以学生掌握吸水性水凝胶的制备、表征和性能测定方法为目的,以安全、实验历程适合课堂教学为原则,以羧甲基纤维素钠、丙烯酰胺和N,N-亚甲基双丙烯酰胺为主要原料,采用自由基接枝聚合的方法,制备了尿素缓释凝胶。利过傅里叶变换红外光谱对水凝胶的化学结构进行了表征,采用淋溶法测定了尿素缓释凝胶的缓释性能。该实验安全性高,易实施,操作难度适中,为材料化学相关本科实验教学提供参考。With the aim that students mastering the preparation,characterization and property measurement methods of absorbent hydrogels in the comprehensive experimental undergraduate teaching of materials chemistry,based on the principle of safety and suitable experimental process for classroom teaching,urea slow-release gel was prepared by free radical grafting polymerization using sodium carboxymethyl cellulose,acrylamide and N,N-methylene bisacrylamide as main raw materials.The chemical composition of hydrogels was characterized by Fourier transform infrared spectroscopy.The sustained-release properties of urea sustained-release gels were determined by leaching method.The experiment has the advantages of high safety,easy to implement and moderate operation difficulty,which can provide reference for the undergraduate experimental teaching of material chemistry.

关 键 词：水凝胶 羧甲基纤维素钠 丙烯酰胺 尿素 缓释 

分 类 号：Q-4[生物学] G642.423[文化科学—高等教育学]