Mixing enthalpy and phase behavior of PEO/PVAc blends

被引：23

作者：

Chen, X ^{[1
]}

An, LJ ^{[1
]}

Li, LX ^{[1
]}

Yin, JH ^{[1
]}

Sun, ZY ^{[1
]}

机构：

[1] Chinese Acad Sci, Changchun Inst Appl Chem, Polymer Phys Lab, Changchun 130022, Peoples R China

来源：

MACROMOLECULES | 1999年 / 32卷 / 18期

关键词：

D O I：

10.1021/ma981889v

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Phase behaviors and heats of mixing of the miscible blends of poly(ethylene oxide) (PEO) and poly(vinyl acetate) (PVAc) with different molecular weights were investigated by DSC. A method proposed by Natasohn and Ebert et al. was adopted to estimate the binodal temperatures and the enthalpies of mixing from onset temperatures and values of areas of a series of endothermic peaks (corresponding to heats of demixing), respectively, in their heating scanning thermograms obtained with different heating rates. Phase diagrams and heats of mixing of this blending system were also predicted by using Sanchez-Lacombe lattice fluid theory. A very good agreement was obtained for both. phase behaviors and heats of mixing obtained with two different methods.

引用

页码：5905 / 5910

页数：6

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