摘要
实验测定了聚氧化乙烯和聚醋酸乙烯酯的共混热以及共混组分的热压系数和热膨胀系数。并由上述实测值计算了状态方程参数。用Ｈａｍａｄａ＾［１－２］等改进的Ｆｌｏｒｙ状态方程理论估算了ＰＥＯ／ＰＶＡｃ共混体系的交换能参数，相互作用参数和剩余混合体积。
lory's equation-of-state theory with modified combinary rules was applied to estimate the thermodynamic parameters of poly (ethylene oxide ) and poly(vinyl acetate) blending system. For this purpose, heats of mixing , densities, thermal expansion coefficients and thermal pressure coefficients for this system were measured. The heats of mixing of blends in all the range of compositions by application of Hess's law were negative. And the interactionparameters, the exchange enthalpy and the excess volumes were negative too.These results supported strongly from the experimental and the theoretical pointof view that this blending system are miscible .
出处
《高分子学报》
SCIE
CAS
CSCD
北大核心
1994年第3期348-353,共6页
Acta Polymerica Sinica
基金
国家自然科学基金
关键词
共混热
聚氧化乙烯
聚醋酸乙烯酯
Combinatorial enthalpy of mixing , Interaction parameter, Excess volume, Poly (ethylene oxide ), Poly (vinyl acetate )
