SCI和EI收录∣中国化工学会会刊

›› 2015, Vol. 23 ›› Issue (3): 541-551.DOI: 10.1016/j.cjche.2013.12.002

• 化工热力学 • 上一篇    下一篇

Pressure-volume-temperature and excess molar volume prediction of amorphous and crystallizable polymer blends by equation of state

Fakhri Yousefi1, Hajir Karimi2, Maryam Gomar1   

  1. 1 Department of Chemistry, Yasouj University, Yasouj 75914-353, Iran;
    2 Department of Chemical Engineering, Yasouj University, Yasouj 75914-353, Iran
  • 收稿日期:2013-07-10 修回日期:2013-12-02 出版日期:2015-03-28 发布日期:2015-04-03
  • 通讯作者: Fakhri Yousefi, Hajir Karimi

Pressure-volume-temperature and excess molar volume prediction of amorphous and crystallizable polymer blends by equation of state

Fakhri Yousefi1, Hajir Karimi2, Maryam Gomar1   

  1. 1 Department of Chemistry, Yasouj University, Yasouj 75914-353, Iran;
    2 Department of Chemical Engineering, Yasouj University, Yasouj 75914-353, Iran
  • Received:2013-07-10 Revised:2013-12-02 Online:2015-03-28 Published:2015-04-03

摘要: In this work the statistical mechanical equation of state was developed for volumetric properties of crystalline and amorphous polymer blends. The Ihm-Song-Mason equations of state (ISMEOS) based on temperature and density at melting point (Tm and ρm) as scaling constants were developed for crystalline polymers such as poly(propylene glycol)+poly(ethylene glycol)-200 (PPG+PEG-200), poly(ethylene glycol) methyl ether-300 (PEGME-350)+PEG-200 and PEGME-350+PEG-600. Furthermore, for amorphous polymer blends containing poly(2,6-dimethyl-1,4-phenylene oxide) (PPO)+polystyrene (PS) and PS+poly(vinylmethylether) (PVME), the density and surface tension at glass transition (ρg and γg) were used for estimation of second Virial coefficient. The calculation of second Virial coefficients (B2), effective van derWaals co-volume (b) andcorrection factor (α) was required for judgment about applicability of this model. The obtained results by ISMEOS for crystalline and amorphous polymer blends were in good agreement with the experimental data with absolute average deviations of 0.84% and 1.04%, respectively.

关键词: Amorphous polymer, Crystalline polymer, Equation of state, Second Virial coefficient

Abstract: In this work the statistical mechanical equation of state was developed for volumetric properties of crystalline and amorphous polymer blends. The Ihm-Song-Mason equations of state (ISMEOS) based on temperature and density at melting point (Tm and ρm) as scaling constants were developed for crystalline polymers such as poly(propylene glycol)+poly(ethylene glycol)-200 (PPG+PEG-200), poly(ethylene glycol) methyl ether-300 (PEGME-350)+PEG-200 and PEGME-350+PEG-600. Furthermore, for amorphous polymer blends containing poly(2,6-dimethyl-1,4-phenylene oxide) (PPO)+polystyrene (PS) and PS+poly(vinylmethylether) (PVME), the density and surface tension at glass transition (ρg and γg) were used for estimation of second Virial coefficient. The calculation of second Virial coefficients (B2), effective van derWaals co-volume (b) andcorrection factor (α) was required for judgment about applicability of this model. The obtained results by ISMEOS for crystalline and amorphous polymer blends were in good agreement with the experimental data with absolute average deviations of 0.84% and 1.04%, respectively.

Key words: Amorphous polymer, Crystalline polymer, Equation of state, Second Virial coefficient