【摘要】 采用反相气相色谱法测定了溶剂/PET在不同温度下无限稀溶剂活度系数和F lory-hugg ins相互作用参数。应用UN IFAC-FV、GK-FV和E lbro-FV模型对溶剂/PET体系中以质量分率表示的无限稀释活度系数进行了估算。结果表明,UN IFAC-FV模型能相对较好地预测溶剂/PET体系中溶剂的无限稀释活度系数。更多还原

【Abstract】 The infinite dilution weight fraction activity coefficient, Ω^<sup>∞_<sub>1 , and Flory-Huggins interaction parameter, χ have been determined for solvent/PET systems by using Inverse gas chromatography from （393.2） K to （443.2） K and Ω^<sup>∞_<sub>1 was also estimated by UNIFAC-FV, GK-FV, Elbro-FV models. The results show that UNIFAC-FV model can be relatively used to estimate Ω^<sup>∞_<sub>1 of the solvents in solvents/PET systems by adjusting model parameter （c） for different solvent.更多还原