大侧基高分子链的温度系数

Temperature Coefficient of Polymer Chain with Large Side Group

在旋转异构态模型的基础上 ,通过导出大侧基高分子链均方回转半径的计算公式 ,计算相应的温度系数 ,并得到无规聚苯乙烯链的温度系数为 - 1 .0 1× 1 0 -3 deg-1 ,与实验值 (- 1 .0× 1 0 -3deg-1 )十分符合 .

Using the rotational isomeric state theory, the mean square radius of gyration 〈 S 2〉 and its temperature coefficient for the polymer chain with large side groups are derived. The temperature coefficient of atactic polystyrene chain is estimated -1.01×10 -3 deg -1 by the derived formulas, which is in agreement with the experiment date -1.00×10 -3 deg -1 .