부산대학교 도서관

With the use of X-ray diffraction analysis, differential scanning calorimetry, dynamic mechanical analysis, and ATR FTIR spectroscopy, the structures and mechanical and thermophysical properties of composite films of various compositions obtained on the basis of polyvinylpyrrolidone and poly(diphenyl oxide amido- N-phenylphthalimide) are investigated. At all component ratios, these polymers form a complex via a system of hydrogen bonds during the formation of composites from solution. The best compatibility of blend components is attained at a polymer ratio of 1: 1, at which individual phases of initial components are absent. The temperatures of glass transition and of other thermal transitions of the samples are determined. Structural changes occurring in the films before and after pervaporation are studied. The considered membranes may show promise for the separation of liquids only in the case of the predominant formation of an interpolymer complex stable during the transport of penetrates of various polarities, such as cyclohexane or water, across the membrane. [ABSTRACT FROM AUTHOR]