Acta Chimica Sinica ›› 2006, Vol. 64 ›› Issue (22): 2281-2286. Previous Articles     Next Articles

Original Articles


冯新星1,2, 陈建勇*,1, 张建春2, 郭玉海1   

  1. (1浙江理工大学材料与纺织学院先进纺织材料与制备技术教育部重点实验室 杭州 310018)
    (2四川大学高分子研究所高分子材料工程国家重点实验室 成都 610065)
  • 收稿日期:2006-02-27 修回日期:2006-06-26 出版日期:2006-11-28 发布日期:2006-11-28
  • 通讯作者: 陈建勇

Structure and Property Characteristics of Nano-TiO2 Modified Silk Fibroin Composite Films Prepared with Sol-Gel Method

FENG Xin-Xing1,2; CHEN Jian-Yong*,1; ZHANG Jian-Chun2; GUO Yu-Hai1   

  1. (1 The Key Laboratory of Advanced Textile Materials and Manufacturing Technology, Zhejiang Sci-Tech University, Hangzhou 310018)
    (2 The State Key Laboratory of Polymer Materials Engineering, Polymer Research Institute of Sichuan University, Chengdu 610065)
  • Received:2006-02-27 Revised:2006-06-26 Online:2006-11-28 Published:2006-11-28
  • Contact: CHEN Jian-Yong

With the sol-gel method, the regenerated SF (silk fibroin)/nano-TiO2 composite films were synthesized using different ratios of SF to TiO2. The experimental results reveal that the nano-TiO2 particles were well dispersed in the regenerated silk fibroin. The diameter of nano-TiO2 particles was about 80 nm by UV and AFM. Through FTIR, XRD, EDS, TGA and DTG, the structures and properties of these films were characterized. The XRD measurement indicated that the crystal structures of the composite films were transited from typical Silk I to typical Silk II. However, it was found that the excessive increase in the content of nano-TiO2 led to the breakage of the crystal structures of the composite films. The FTIR and EDS analysis showed that new bonds were formed between the nano-TiO2 particles and the silk fibroin. Through TGA and DTG, it was demonstrated that the heat transition temperature of composite films was also enhanced.

Key words: silk fibroin, nano-TiO2, crystal form, heat transition