摘要
采用溶胶共混-热压法成功制备出一系列丝素粉体/聚氨酯共混膜。利用扫描电子显微镜、红外光谱、X射线衍射、动态力学分析和拉伸实验对共混膜的形貌、结构和性能进行了表征,详细研究了丝素含量对共混膜形貌、结构及性能的影响。结果表明,聚氨酯和丝素粉体间存在一定的氢键相互作用,丝素小颗粒均匀分散在聚氨酯中,形成结构较致密的共混膜。溶胶共混-热压成膜法能够较好地提高二者的共混相容性,其工作提供了一种制备丝素粉体/聚氨酯生物医用材料的新途径。
The blended films of polyurethane and Silk fibroin powder(PU/SF) were successfully prepared by sol mixture-hot pressure method.The effects of the Silk fibroin ratio on the morphology、structure and properties of the blends were studied by scanning electron microscopy,infrared spectroscopy,wide-angle X-ray diffraction,dynamic mechanical thermal analysis,and tensile testing.The results reveal that intermolecular hydrogen bonding exists between Silk fibroin and polyurethane,leading to a homogeneous dispersion of Silk powder into polyurethane and a denser structure of blends.The method of sol mixture-hot pressure can better increase the compatibility of Silk fibroin and polyurethane in the blended films.This work provided a new pathway to prepare biomaterials made of polyurethane and Silk fibroin powder.
出处
《高分子材料科学与工程》
EI
CAS
CSCD
北大核心
2011年第8期172-175,180,共5页
Polymer Materials Science & Engineering
基金
国家自然科学基金资助项目(50873079)
973国家重大科研项目资助项目(2009CB526402)
关键词
丝素粉体
医用聚氨酯
溶胶共混-热压
力学性能
Silk fibroin powder
medical polyurethane
sol mixing-hot pressure
mechanical properties