| 丝素蛋白与聚氨酯共混膜的制备及结构和性能 |
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| 引用本文： | 陶咏真,鄢芸,徐卫林,周文慧.丝素蛋白与聚氨酯共混膜的制备及结构和性能[J].高分子学报,2010,0(1):27-32. |
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| 作者姓名： | 陶咏真 鄢芸 徐卫林 周文慧 |
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| 作者单位： | 新型纺织材料绿色加工及其功能化教育部重点实验室,武汉科技学院,武汉,430073 |
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| 基金项目： | 国家重点基础研究发展规划(973计划,项目号2009CB526402);;武汉科技学院校青年基金(基金号2008Z10);;博士启动经费资助项目 |
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| 摘 要： | 采用溶液共混法制备了一系列不同组成的聚氨酯/丝素共混膜.利用红外光谱和广角X-射线衍射表征聚氨酯/丝素共混膜的结构;扫描电镜观察共混膜的断面;紫外-可见光谱测定共混膜的透光性;运用拉伸实验研究不同配比聚氨酯/丝素共混膜的力学性能.结果表明聚氨酯和丝素蛋白分子间存在较强的氢键相互作用.当丝素含量低于3 wt%时,试膜的断面较光滑,丝素蛋白分子进入聚氨酯网状结构中,破坏了聚氨酯分子内硬段和软段间的氢键作用.随着丝素含量进一步增大,丝素小颗粒均匀分散在聚氨酯基体中,二者之间具有较好的相容性.本实验所采用的制膜条件有利于促进丝素蛋白大分子的结晶.丝素蛋白对聚氨酯具有良好的增强效果,当丝素含量从0到5.6 wt%变化时,共混试片的断裂强度由0.56 MPa增大到4.60 MPa,杨氏模量由0.14 MPa增大到1.71 MPa,断裂伸长率从1065%下降到988%.丝素蛋白增强聚氨酯共混膜的强度显著增加,但弹性基本保持不变.
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| 关 键 词： | 丝素 聚氨酯 相容性 力学性能 |
| 收稿时间： | 2008-12-26 |
PREPARATION, STRUCTURE AND PROPERTIES OF BLENDED FILMS OF POLYURETHANE AND SILK FIBROIN |
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| TAO Yongzhen,YAN Yun,Xu Weilin,ZHOU Wenhui.PREPARATION, STRUCTURE AND PROPERTIES OF BLENDED FILMS OF POLYURETHANE AND SILK FIBROIN[J].Acta Polymerica Sinica,2010,0(1):27-32. |
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| Authors: | TAO Yongzhen YAN Yun Xu Weilin ZHOU Wenhui |
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| Institution: | Key Lab of Green Processing and Functional Textiles of New Textile Materials;Ministry of Education;Wuhan University of Science and Engineering;Wuhan 430073 |
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| Abstract: | The blended films of polyurethane and silk fibroin(PU/SF) were prepared successfully by mixing water polyurethane(WPU) with silk fibroin solution.The structure of the blends was analyzed by means of FTIR spectroscopy,wide-angle X-ray diffraction,and scanning electron microscopy.The miscibility and properties of the blends were characterized by ultraviolet-visible spectroscopy and tensile testing.The blended sheets exhibited smooth surface when the content of silk fibroin was lower than 3 wt%.It suggests tha... |
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| Keywords: | Silk fibroin Polyurethane Miscibility Mechanical properties |
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