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化学学报
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化学学报 ›› 2006, Vol. 64 ›› Issue (22): 2281-2286. 上一篇    下一篇

研究论文

溶胶-凝胶法制备纳米TiO2/丝素复合膜及结构性能研究

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)
  • 投稿日期:2006-02-27 修回日期:2006-06-26 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 Published:2006-11-28
  • Contact: CHEN Jian-Yong

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用溶胶凝胶法制备不同比例纳米TiO2改性再生蚕丝丝素蛋白复合膜. UV和AFM测试结果表明, 该丝素膜中纳米TiO2均匀分散在丝素中, TiO2粒径约为80 nm; 同时该丝素膜的结构和热性能用FTIR, XRD, EDS, TGA和DTG进行表征. XRD测试结果表明, 随着纳米TiO2的加入, 复合丝素膜的结晶结构从Silk I向Silk II转化, 但当纳米TiO2的加入超过一定量时, 又破坏复合丝素膜的结晶结构; FTIR和EDS测试结果表明, TiO2与丝素形成较好的键合; TGA和DTG测试表明复合丝素膜的热转变温度相比于纯丝素膜有所提高.

关键词: 蚕丝丝素蛋白, 纳米TiO2, 晶型, 热转变

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