【摘要】 本文研究了用相转移催化剂合成的高分子量的聚羟基醚砜的分子量分布,建立了聚羟基醚砜在N,N—二甲基甲酰胺淋洗液中的GPC标定曲线,本文还测定了聚羟基醚砜的溶度参数并取得了与理论计算值一致的结果。更多还原

【Abstract】 The synthesis of the higher molecular weight polyhydroxy ether sulfone by phase transfer catalysts is capable for investigating its solution property. the polymer was fractionated by precipitation. The soivent was N, N’-dimethylformamide and the nonsolvent was methyl alcohol, The molecular weight and molecular weight bistribution have been determined by GPC and osmometry. The solubility parameter, δP=24.83 ( J/cm ) , has been obtained by the method of turbidity. The results is quite agreement with the calculated , valve, δp=24.49 ( J/cm ) , by the methods of Van Krevelen and Fedors.更多还原