关于聚乙烯分子链均方回转半径的进一步讨论

本文考虑到氢原子的影响, 用矩阵代数的方法重新推导了聚乙烯分子链的均方回转半径。在我们得到的公式中若忽略氢原子的质量时, 就简化到Flory的公式。具体数值计算得到聚乙烯分子链均方回转半径对分子量的依赖关系是:〈S^2〉^1^/^2=0.44M^1^/^2比较θ-溶剂的实验数据: ⅹ〈S^2〉^1^/^2~w=0.45±0.08M^1^/^2~w是符合得很好的。

A further discussion on the mean square radius of gyration of polyethylene

The formula for calculating the mean-square radius of gyration of polyethylene was deduced by matrix method taking into account the effect of H atoms. The derived formula was simplified to the Flory's formula if the mass of H atoms was ignored. The relation between and mol. wt. (M) could be expressed as 1/2 = 0.44M1/2, which agreed with the experimental data in q solvent, i.e., 1/2 = 0.45 ?0.08M1/2.