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本文采用晶格模型,以动力学链段长度作为统计单元大小,推导了高聚物玻璃化温度T_8和链静态刚性因子σ~2(T_8),链动态刚性因子β(T_8)以及聚合度DP等分子参数之间的关系。具体讨论了链柔性对T_8的影响。理论预测和几十种聚合物的实验数据能较好吻合,分析结果表明T_8值基本上取决于高聚物链σ(T_8)大小。
In this paper, the crystal lattice model and the length of kinematic segment are used as the statistical unit size. The glass transition temperature T8 and the static stiffness factor σ2 (T8), the chain dynamic stiffness factor β (T8) and the polymerization degree DP Relationship between molecular parameters. The effects of chain flexibility on T_8 are discussed in detail. Theoretical predictions are in good agreement with the experimental data of dozens of polymers. The results show that the value of T_8 basically depends on the size of the polymer chain σ (T_8).