Study on the properties of nano‐TiO2 particles modified silk fibroin porous films |
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| Authors: | Feng Xinxing Zhou Lan Zhu Hailin Chen Jianyong |
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| Affiliation: | 1. The Key laboratory of Advanced Textile Materials and Manufacturing Technology, Ministry of Education, Zhejiang Sci‐Tech University, Hangzhou 310018, People's Republic of China;2. Shanghai Institute of Ceramics, Chinese Academy of Sciences, Biomaterials and Tissue Engineering Research Center, Shanghai 200050, People's Republic of China |
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| Abstract: | Using the freeze‐drying method, Nano‐TiO2/silk fibroin porous films were synthesized with different ratios of TiO2 to silk fibroin solution. Through scanning electron microscopy (SEM), X‐ray diffraction (XRD), thermogravimetric analysis (TGA), tensile strain, and water‐solubility tests, the structures and properties of these porous films were characterized. The SEM results indicated that the pores of the nano‐TiO2/silk fibroin porous films were uniformly distributed by the freeze‐drying method. The XRD analysis indicated that the formation of nano‐TiO2 particles might induce a conformational transition of silk fibroin from the typical Silk I to the typical Silk II structure partly with an increase in the crystallinity of the porous films. Compared with the pure silk fibroin porous films, the mechanical properties of nano‐TiO2/silk fibroin porous films were improved, and its heat transition temperature was also enhanced; however, the water‐solubility of this material was diminished. © 2009 Wiley Periodicals, Inc. J Appl Polym Sci, 2010 |
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| Keywords: | freeze‐drying method nano‐TiO2 silk fibroin porous film |
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