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化学学报
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化学学报 ›› 2000, Vol. 58 ›› Issue (3): 303-307. 上一篇    下一篇

研究论文

聚合物内压测定及对应状态模型

徐云蕾;黑恩成;刘国杰   

  1. 华东理工大学化学系.上海(200237)
  • 发布日期:2000-03-15

Internal pressure and corresponding state model of polymers

Xu Yunlei;Hei Encheng;Liu Guojie   

  1. East China Univ of Sci Tech., Dept Chem.Shanghai(200237)
  • Published:2000-03-15

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实验测定了PEG(M~n=200),PEG(M~n=300),PEG(M~n=400),PDMS(M~w=15000)和PDMS(M~w=20000)在20-90℃温度范围的热压力系数和密度,它们的热压力系数和内压几乎与分子量无关。据此还建立了一个聚合物内压的对应状态模型,它只含一个可调参数,能满意地适用于各种聚合物。

关键词: 高聚物, 内压, 聚乙二醇, 聚硅氧烷

The thermal pressure coefficients and densities of PEG (M~n=200), PEG (M~n=300), PEG (M~n=400), PDMS (M~w=15000) and PDMS (M~w=20000) have been measured over the temperature range of 20-90℃. It is found that their thermal pressure coefficients and internal pressures are almost in dependent of the molecular weight. A corresponding state model of internal pressure with only one adjustable parameter for polymers is established, which can be applied to various polymers satisfactorily.

Key words: HIGHPOLYMER, INTRINSIC PRESSURE, POLYGLYCOL, POLYSILOXANE

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