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化学学报
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化学学报 ›› 1992, Vol. 50 ›› Issue (4): 313-319.    下一篇

研究论文

关于聚乙烯分子链均方回转半径的进一步讨论

周志平;颜德岳;唐敖庆   

  1. 上海交通大学应用化学系;吉林大学理论化学研究所
  • 发布日期:1992-04-15

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

ZHOU ZHIPING;YAN DEYUE;TANG AOQING   

  • Published:1992-04-15

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532

被引次数

1

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。

关键词: 影响, 聚乙烯, 矩阵法分析, 分子量, 异构体, 相互关系, 氢原子, 均方回转半径

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.

Key words: INFLUENCE, POLYETHYLENE, MATRIX METHOD, MOLECULAR WEIGHT, ISOMER, CORELATIONS, HYDROGEN ATOM

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