Preparation and Mechanical Properties of HIPS Composites Containing PS-grafted-hydroxyapatite Particles  

作　　者：龚兴厚 解孝林 

机构地区：[1]Department of Chemistry, Huazhong University of Science and Technology, Wuhan 430074, China [2]Department of Chemistry, Huazhong University of Science and Technology, Wuhan 430074, China,State Key Laboratory of Plastic Forming Simulation and Die & Mould Technology,Huazhong University of Science and Technology, Wuhan 430074, China

出　　处：《Journal of Wuhan University of Technology(Materials Science)》2005年第B12期52-55,共4页武汉理工大学学报（材料科学英文版）

基　　金：FundedbytheNationalNaturalScienceFoundationofChina(No.50573026)

摘　　要：The surfaces of the micron- sized HA particles were modified by in situ copolymerization of vinyl triethoxyl silane （VIES） and styrene （ St ）. Then, the modified HA particles were compounded with HIPS. The results showed that the polystyrene （PS） macromolecules were grafted on the surfaces of HA particles during in situ copolymerization of VIES and St. Thereby, PS chains grafted on the HA surface enhance the compatibility between HA and HIPS, improve the dispersion of HA particles in HIPS matrix, and enhance the interfacial adhesion between HA and matrix. The stiffness, tensile strength and notch impact strength of HIPS/HA composites are improved at the same time. And there is a critical coating thickness of PS to the HA surface for the optimum mechani- cal properties of HIPS/HA composites.The surfaces of the micron- sized HA particles were modified by in situ copolymerization of vinyl triethoxyl silane （VIES） and styrene （ St ）. Then, the modified HA particles were compounded with HIPS. The results showed that the polystyrene （PS） macromolecules were grafted on the surfaces of HA particles during in situ copolymerization of VIES and St. Thereby, PS chains grafted on the HA surface enhance the compatibility between HA and HIPS, improve the dispersion of HA particles in HIPS matrix, and enhance the interfacial adhesion between HA and matrix. The stiffness, tensile strength and notch impact strength of HIPS/HA composites are improved at the same time. And there is a critical coating thickness of PS to the HA surface for the optimum mechani- cal properties of HIPS/HA composites.

关 键 词：high impact polystyrene HYDROXYAPATITE surface modification in situ copolymerization 

分 类 号：TB332[一般工业技术—材料科学与工程]