纤维素基水凝胶的制备及其溶胀性能研究  

Preparation and swelling properties of cellulose based hydrogels

作　　者：车春波[1] 李思航 刘双易 杨天一 李金龙 冯渲琪 刘智韬 CHE Chun-bo;LI Si-hang;LIU Shuang-yi;YANG Tian-yi;LI jin-long;FENG Xuan-qi;LIU Zhi-tao(School of Food Science and Engineering,Harbin University of Commerce,Harbin 150028,China)

机构地区：[1]哈尔滨商业大学食品工程学院,哈尔滨150028

出　　处：《哈尔滨商业大学学报（自然科学版）》2022年第6期668-673,共6页Journal of Harbin University of Commerce：Natural Sciences Edition

摘　　要：以玉米秸秆中提取的纤维素为原料,通过接枝共聚与丙烯酸作用制备改性水凝胶,并探讨温度、盐溶液及pH值对其溶胀性能的影响.实验结果表明,不同的反应物配比制备的水凝胶显现出不同的溶胀性能.升高温度水凝胶的溶胀率下降;二价阳离子比一价阳离子使水凝胶网络结构收缩明显,溶胀性能变得更差;pH值在5~9之间,由于系统的缓冲作用使水凝胶的溶胀性能保持相对稳定.Modified hydrogel was prepared from cellulose extracted from corn stalks by graft copolymerization and acrylic acid.The effects of temperature,salt solution and pH value on swelling properties were studied.The experimental results showed that different hydrogel prepared by different reactant ratio exhibited different swelling properties.The swelling rate of hydrogel decreased with increasing temperature.Compared with monovalent cation,the structure of hydrogel network shrinks obviously and the swelling property of two valence cations becomes worse.The pH value is between 5~9,and the swelling property of the hydrogel remains relatively stable due to the buffering effect of the system.

关 键 词：玉米秸秆 纤维素 水凝胶 网络结构 接枝共聚 溶胀性能 

分 类 号：X712[环境科学与工程—环境工程]