丝素蛋白在室温离子液体中的溶解与再生性能研究  

Dissolution and regeneration of silk fibroin in room-temperature ionic liquid

作　　者：朱海霖[1] 冯新星[1] 陈建勇[1] 郭玉海[1] 张华鹏[1] 

机构地区：[1]浙江理工大学"先进纺织材料与制备技术"教育部重点实验室材料与纺织学院,浙江杭州310018

出　　处：《功能材料》2008年第10期1710-1713,共4页Journal of Functional Materials

基　　金：国家自然科学基金资助项目(50573068);教育部博士点基金资助项目(20060338001);浙江省自然科学基金资助项目(Y405459)

摘　　要：室温离子液体1-烯丙基-3-甲基氯代咪唑和1-(2-羟乙基)-3-甲基氯代咪唑是丝素蛋白的新型良溶剂。丝素蛋白在1-烯丙基-3-甲基氯代咪唑和1-(2-羟乙基)-3-甲基氯代咪唑中的溶解度分别为14.5%(质量分数)(100℃)和8.0%(质量分数)(80℃)。向离子液体丝素溶液中加入乙醇或正丁醇可获得再生丝素蛋白。XRD和FT-Raman研究表明再生丝素蛋白膜的构象主要是β-折叠结构。TGA数据表明再生丝素蛋白的热稳定性比天然丝素纤维有所降低,热失重残留物有所增加。同时,机械性能和溶失率分析结果显示从离子液体中再生的丝素蛋白表现出良好的湿态机械性能和优异的稳定性。Two novel room-temperature ionic liquid, 1-allyl-3-methyl imidazolium chloride [AMIM]Cl and 1-（2- hydroxylethyl）-3-methyl imidazolium chloride [HeMIM]Cl were found to be the excellent solvents for silk fibroin. The solubility of silk fibroin in [AMIM]Cl and [HeMIM]Cl were 14. 5wt% （100℃） and 8.0wt% （80℃） ,respectively. The regenerated silk fibroin film was obtained by rinsing with either ethanol or n-Butanol. The results of XRD and FT-Raman indicated that b-sheet crystal existed in fibroin film. Compared to cocoon silk fiber, the regenerated silk fibroin film showed lower thermal stability and much more residues of thermal decomposition. Furthermore,the results of mechanical experiment and water-solubility showed the regenerated silk fibroin film had good mechanical properties and was almost insoluble.

关 键 词：丝素蛋白 室温离子液体 溶解 再生 

分 类 号：O636.9[理学—高分子化学]