| 纳米TiO_2改性蚕丝丝素蛋白膜的研究 |
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| 引用本文： | 陈建勇,冯新星,许丹.纳米TiO_2改性蚕丝丝素蛋白膜的研究[J].高分子学报,2006(5):649-653. |
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| 作者姓名： | 陈建勇 冯新星 许丹 |
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| 作者单位： | 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,杭州,310018 |
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| 基金项目： | 中国科学院资助项目;江苏省重点实验室基金 |
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| 摘 要： | 用溶胶凝胶法制备纳米TiO2改性再生蚕丝丝素蛋白膜.该丝素膜机械强度提高,在水中溶失率下降.UV、AFM、SEM测试的结果表明,丝素中纳米TiO2粒径约为80 nm,纳米粒子在丝素膜中分布均匀;XRD、FTIR测试结果表明,纳米TiO2的加入,可使改性丝素膜的结晶结构从SilkⅠ向SilkⅡ转化,其结晶度也随之提高;TGA测试表明改性丝素膜的热转变温度比纯丝素膜有所改变.
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| 关 键 词： | 蚕丝丝素蛋白 纳米TiO2 晶型 |
| 收稿时间： | 2005-02-23 |
| 修稿时间： | 2005-06-03 |
STUDIES ON NANO-TiO2 MODIFIED SILK FIBROIN COMPOSITE FILMS |
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| CHEN Jianyong,FENG Xinxing,XU Dan.STUDIES ON NANO-TiO2 MODIFIED SILK FIBROIN COMPOSITE FILMS[J].Acta Polymerica Sinica,2006(5):649-653. |
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| Authors: | CHEN Jianyong FENG Xinxing XU Dan |
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| Institution: | The Key Laboratory of Advanced Textile Materials and Manufacturing Technology, Zhejiang Sci-Tech University, Hangzhou 310018 |
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| Abstract: | With the sol-gel method,the regenerated SF(silk fibroin)/nano-TiO_2 composite films were prepared.Compared to the pure silk fibroin films,the mechanical strength of these regenerated SF/nano-TiO_2 composite films were increased and the loss percentage of SF/nano-TiO_2 composite films in aqueous solution were decreased.By using UV,AFM and SEM,these films were characterized.The experimental results reveal that the diameter of nano-TiO_2 particles in films was about 80 nm.The nano-TiO_2 particles were well dispersed in the regenerated silk fibroin.It was found that the crystal structure of the composite films changed from typical SilkⅠto typical SilkⅡ.Furthermore,the crystallinity of the composite films was obviously improved.Through the TGA,it was demonstrated that the heat transition temperature of composite films was also changed. |
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| Keywords: | Silk fibroin Nano-TiO_2 Crystal form |
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