空孔―セルモデルに基づく鎖状分子の理論的状態式
A Theoretical Equation of State for Chain Molecule Fluids Based on a Hole and Cell Model
王 寧和・酒井忠基・舛岡弘勝
Wang, Ning-He / Sakai, Tadamoto / Masuoka, Hirokatsu
A theoretical equation of state (EOS) for chain molecule fluids was proposed based on a hole and cell model, which is considered as an improvement of the theories of Simha et al. and Sanchez and Lacombe. The present EOS has three characteristic parameters per pure fluid and satisfies the corresponding-state principle for pure polymeric fluids. The applicability of the present equation was investigated by fitting the experimental PVT data for nine common polymers and predicting the thermal expansion coefficient and isothermal compressibility of PVAc as well as comparing with the previously reported values. The results show that the present EOS gives the best prediction of all the EOS. Thus we conclude that the present EOS is more applicable to the predict the PVT relationship of polymeric fluids.
Key words: Equation of state / Chain molecules / Polymer / Hole theory / Cell theory