Fabrication, and characterization of polydimethylsiloxane/glycidol-grafted gelatin film

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• 作者：Lei Yue ; Jing Li ; Wei-Yue Zhu ; Jing Xu…
• 关键词：Bio ; compatible film ; Polydimethylsiloxane ; grafted gelatin ; Glycidol ; grafted gelatin ; Hydrophobicity ; Flexibility
• 刊名：Journal of Coatings Technology and Research
• 出版年：2017
• 出版时间：January 2017
• 年：2017
• 卷：14
• 期：1
• 页码：225-232
• 全文大小：
• 刊物类别：Chemistry and Materials Science
• 刊物主题：Tribology, Corrosion and Coatings; Surfaces and Interfaces, Thin Films; Polymer Sciences; Industrial Chemistry/Chemical Engineering; Materials Science, general;
• 出版者：Springer US
• ISSN：1935-3804
• 卷排序：14

文摘

Polydimethylsiloxane or glycidol-grafted gelatin films with excellent flexibility and strong hydrophobicity were fabricated by mono epoxy-terminated polydimethylsiloxane (PDMS-E)-grafted gelatin (PGG) and glycidol-grafted gelatin (GGG). Mixed reactive aqueous solutions of PGG and GGG were poured into a Teflon mold. The solutions were dried slowly and eight films were obtained with a thickness of around 200 μm, including gelatin film, PGG film, GGG film, and resulting films at gelatin/PGG/GGG ratios of 2.5:0.5:1.0, 5.0:1.0:1.0, 7.5:1.5:1.0, 10.0:2.0:1.0, and 5.0:1.0:3.0 (weight percentage). The microstructures of these films were confirmed by scanning electron microscopy, attenuated total reflection-Fourier transform infrared spectroscopy, atomic force microscopy, and small-angle X-ray scattering. The influence of the gelatin/PGG/GGG ratios was studied with respect to the hydrophobicity and the mechanical property of the films. The results showed that the contact angle of gelatin-based film increased from 76° to 126° after blending with gelatin, PGG, and GGG at 5.0:1.0:1.0 (weight percentage). Moreover, the elongation at break value of the film reached 3400%. The resulting films showed high flexibility and strong hydrophobicity, which is promising for high-performance coatings.