新型刚性主链或纳米颗粒接枝热塑性弹性体合成及其结构性能关系

项目名称： 新型刚性主链或纳米颗粒接枝热塑性弹性体合成及其结构性能关系

项目编号： No.51473155

项目类型： 面上项目

立项/批准年度： 2015

项目学科： 一般工业技术

项目作者： 王志刚

作者单位： 中国科学技术大学

项目金额： 85万元

中文摘要： 本项目立足于以丰富的可再生资源纤维素或刚性无机纳米管或纳米颗粒引入作为物理网络凝胶点，通过可控接枝聚合方法制备新型高性能化热塑性弹性体材料，并通过掺杂方法制备新型导电热塑性弹性体，通过核磁共振、红外光谱、差式扫描量热分析、透射电镜、扫描电镜、光散射、动态热机械分析、热重分析、动态光散射、小角X-射线散射和衍射、力学性能拉伸测试以及动态流变学等技术，研究纤维素刚性主链或刚性纳米颗粒对热塑性弹性体性能的影响及拉伸和弹性回复过程中的网络结构演化，从根本上揭示其结构与性能的相互关系；通过结构化设计制备出新型的导电热塑性弹性体，研究其导电性及热机械性能协同变化，探索其分子链结构与相形态及微相分离之间的关系；探寻适宜加工工艺参数，实现该类新型热塑性弹性体结构和性能优化。本项目从基础研究出发，最终落实到高性能热塑性弹性体材料和导电热塑性弹性体材料的开发和应用，兼具理论和应用价值。

中文关键词： 热塑性弹性体；接枝共聚物；纳米复合材料；结构与性能；力学性能

英文摘要： This project is based on incorporation of the plentiful renewable resource, cellulose or rigid inorganic nanotubes or synthesized nanoparticles, which act as physical crosslinking points for the prepartion of novel high performance graft thermoplastic elastomers synthesized through the graft polymerization, and for the preparation of conductive thermoplastic elastomers through blending method. Various techniques such as NMR, FTIR, DSC,TEM, SEM, light scattering, DMA, TGA, DLS, SAXS and WAXD, tensile tests and dynamic rheology will be applied to study the influences of cellulose rigid backbone chains and/or rigid nanotubes or nanoparticles on the enhancements of mechanical properties and the network structure changes during tensile deformation and elastic recovery processes, which help disclose the structure-property relationships for these types of novel thermoplastic elastomers. The novel electron conductive thermoplastic elastomers can be further prepared through the structural designing for the studies on the coherent changes of the electron conductivity and thermomechanical properties, and the relationships between the macromolecular chain structures, phase morphology and microphase separation. Through obtaining the suitable processing conditions, the enhancements of mechanical properties of these types of thermoplastic elastomers would be realized.This project is based on the fundamental research with the goal of realizing the applications of these high performance thermoplastic elastomers, some eventually with applicable electron conductivities.

英文关键词： thermoplastic elastomer;graft copolymer;nanocomposite;structure and property;mechanical property