Estimation of phase diagrams for copolymer-diluent systems in thermally induced phase separation

作者：Lv Rui; Zhou Jing; Xu Peng; Du Qiangguo^*; Wang Haitao; Zhong Wei

来源：Journal of Applied Polymer Science, 2007, 105(6): 3513-3518.

DOI：10.1002/app.26617

• phase diagrams
• binary interaction model
• thermally induced phase separation
• poly(ethylene-co-vinyl alcohol)

The binary interaction model was introduced to estimate phase diagrams of copolymer-diluent systems in thermally induced phase separation. The crystallization curves and cloud points of poly(ethylene-co-vinyl alcohol) (EVOH) with 1,4-butanediol, EVOH/ 1,3-propanediol, and EVOH/glycerol were calculated and compared with experimental value or literature data. Fair agreement was obtained. To confirm the importance of incorporating intramolecular interactions, calculations with and without the consideration of intramolecular interactions were performed and compared. It was found that better results can be obtained if intramolecular interaction was introduced. The reason for the small differences between the calculated value and the experimental data of the liquid-liquid phase separation is discussed.

• 出版日期2007-9-15
• 单位复旦大学