【摘要】 研究高分子的分子结构以及链结构行为和规律,对材料设计和应用有极为重要的意义。采用凝胶渗透色谱示差折光指数(RI)/黏度(DV)/激光光散射(RALLS)三检测联用技术,研究了非线性光学聚合物———侧链型聚丙烯酸酯的溶液性质,详细分析了侧链刚性共轭结构以及刚性共轭基团与主链之间连接链的方式与结构对高分子特性粘数、均方旋转半径<r2>0/M和Flory特征比C∞的影响。结果发现侧链共轭结构长度增加将增大分子的无扰尺寸和Flory特征比;主链与共轭基团间通过柔基团连接时,分子无扰尺寸和Flory特征比降低。更多还原

【Abstract】 The study of Polymer solution and its chain structure is very important for the molecular design and application of materials.The GPC/RI-DV-RALLS Multi-detection technique was used to measure solution property of nonlinear optical polymer,substituted polyacrylates and carefully investigated the influence of the rigid conjugated side-chain structure and the linked flexible chain structure between rigid conjugated group and major-chain on the characteristic viscosity,unperturbed dimensions <r2>0/M and Flory’s characteristic ratio C∞.The results show that unperturbed dimensions <r2>0/M and Flory’s characteristic ratio C∞ will increase with the length of side-chain conjugated structure and decrease when there is the linked flexible chain structure between rigid conjugated group and major-chain.更多还原