Acta Chimica Sinica ›› 1996, Vol. 54 ›› Issue (2): 113-118.

Original Articles

### 聚合物的热压力系数及内压

1. 华东理工大学化学系
• 出版日期:1996-02-15 发布日期:1996-02-15

### Thermal pressure coefficient and internal pressure for polymers

LIU GUOJIE;YU DAHONG

• Online:1996-02-15 Published:1996-02-15

The modified van der Waals' model suggested by our previous work is extended to the liquid polymers in this paper. A relation between the thermal pressure coefficient and the density of polymer, which can be used to calculate the thermal pressure coefficients of polymers accurately at the wide range of temperature, is established. where ν and M are the specific volume of polymer and the molar mass of a segment respectively, and A is the characteristic constant. It is found that the size of a segment is about equal to three structural units for five polymers examined.

Key words: HIGHPOLYMER, INTRINSIC PRESSURE

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