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采用阴离子聚合法合成出了一系列分子量分布窄、主链微观结构可调、官能度接近理想值2的端羟基聚丁二烯样品。通过HNMR、FT-IR、VPO、GPC等方法对其进行了表征,结果表明,样品分子量分布指数<1.05,主链1,2微观结构含量可在10.02%～94.80%之间调节。展望了端羟基聚丁二烯作为GPC的标准样品,在示差/紫外(RI/UV)双检测器凝胶渗透色谱(GPC)测定端羟基聚丁二烯聚合物分子量分布及官能度分布中应用的重要意义。
A series of hydroxyl-terminated polybutadiene samples with narrow molecular weight distribution, adjustable main-chain microstructure and close to ideal functionalities 2 were synthesized by anionic polymerization. The samples were characterized by means of HNMR, FT-IR, VPO and GPC. The results showed that the molecular weight distribution index of the sample was less than 1.05 and the content of main chain 1,2 microstructure was 10.02% -94.80%. The application of hydroxyl-terminated polybutadiene as a standard sample for the determination of the molecular weight distribution and functional distribution of hydroxyl-terminated polybutadiene polymers by GPC / UV / RI dual-detector The significance of