纳米TiO2／丝素蛋白多孔材料的结构和性能  

Structure and Properties of Nano TiO_2/Silk Fibroin Porous Materials

作　　者：郑敏[1] 朱海霖[1] 冯新星[1] 朱宝来[2] 陈建勇[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,浙江理工大学材料与纺织学院,杭州310018 [2]浙江理工大学服装学院,杭州310018

出　　处：《蚕业科学》2008年第2期284-288,共5页ACTA SERICOLOGICA SINICA

基　　金：国家自然科学基金项目(编号50573068);浙江省自然科学基金项目(编号Y407295);教育部博士点基金项目(编号20060338001);长江学者和创新团队发展计划项目(编号IRT0654)

摘　　要：将不同配比的纳米TiO2加入到丝素溶液中，经过冷冻干燥，得到纳米TiO2／丝素蛋白多孔材料。采用扫描电镜（SEM）、X射线衍射（XRD）、红外光谱（FTIR）对材料进行了袁征及溶失率的测试，结果表明：纳米TiO2／丝素多孔材料的内部孔为不规则的多角形，且孔与孔相互贯通，平均孔径为22～68μm，孔隙率为85％～92％；随着纳米TiO2加入量的增大，丝素蛋白的结晶结构从silkⅠ向silkⅡ构象转变，在水中的溶失率明显下降。The Nano TiO2/silk fibroin porous materials were prepared from the silk fibroin solution added with different ratios of nano TiO2 by freeze-drying method. And it was characterized by using SEM, XRD, FTIR and water-solubility tests, The results showed that the shape of these pores was random polygonal, and one pore was linked to another pore. The average pore diameter was from 22 ～68 μm, and porosity was from 85% ～92%. The crystal of silk fibroin was changed from silk Ⅰ to silk Ⅱ by increasing the concentration of Nano TiO2 in the solution. Furthermore, the dissolubility of silk fibroin reduced significantly in water.

关 键 词：丝素蛋白 纳米TIO2 多孔材料 结构 溶失率 

分 类 号：R318.08[医药卫生—生物医学工程]