摘要
本文采用紫外交联法制备丝素和2-(二甲氨基)丙烯酸乙酯(DMAEA)、丝素和2-羟基乙基丙烯酸酯(HEA)及丝素和季铵盐的改性丝素蛋白凝胶。通过溶胀率、红外光谱表征改性丝素蛋白凝胶的结构特性,通过热重分析研究改性丝素蛋白凝胶的热稳定性。实验结果表明DMAEA改性丝素蛋白凝胶的溶胀性能优于添加HEA和季铵盐的改性丝素蛋白凝胶;盐浓度的影响表明,DMAEA、HEA和季铵盐的改性丝素蛋白凝胶溶胀率均随盐浓度升高而下降。热重分析研究表明,三种紫外聚合的凝胶,在100℃附近开始分解,450℃左右分解完,热稳定较好。三种改性方法中,添加HEA的凝胶的热稳定较好,添加DMAEA的凝胶溶胀率最好。
In this paper,silk fibroin and 2-(two methylamino)ethyl acrylate(DMAEA),silk fibroin and 2-hydroxyethyl acrylate(HEA),silk fibroin and quaternary ammonium salt modified silk fibroin gel were prepared by UV crosslinking.The structural properties of modified silk fibroin gel were characterized by swelling rate and infrared spectrum,and the thermal stability of modified silk fibroin gel was studied by thermogravimetric analysis.The experimental results showed that the swelling property of DMAEA modified silk fibroin gel was better than that of HEA and quaternary ammonium modified silk fibroin gel.The salt concentration test showed that the swelling rate of DMAEA,HEA and quaternary ammonium modified silk fibroin gel decreased with the increase of salt concentration.Termogravimetric analysis(TGA)showed that the three UV polymerized gels began to decompose at 100℃and reached a good thermal stability at about 450℃.Among the three modification methods,the heat stability of the Gel with Hea was better,and the swelling ratio of the Gel with DMAEA was the best.
作者
段佳骥
刘佳林
夏逸慧
杨哲旭
徐玉玲
未本美
Duan Jiaji;Liu Jialin;Xia Yihui;Yang Zhexu;Xu Yuling;Wei Benmei(Chemistry and Environmental Engineering,Wuhan Polytechnic University,Wuhan 430021,China)
出处
《广东化工》
CAS
2021年第18期55-57,共3页
Guangdong Chemical Industry
基金
武汉轻工大学科研项目资助(No:2020Y05)。
关键词
丝素
水凝胶
紫外交联
改性
溶胀率
silk fibroin
hydrogel
UV crosslinking
modification
swelling rate
