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Title: INTERFACIAL TENSION EFFECTS IN TERNARY BIPHASIC BLENDS

Author
item BARGER, M - DOW CHEMICAL CO
item Carriere, Craig
item SAMMLER, R - DOW CHEMICAL CO

Submitted to: Society of Plastics Engineers Proceedings
Publication Type: Abstract Only
Publication Acceptance Date: 5/1/1998
Publication Date: N/A
Citation: N/A

Interpretive Summary:

Technical Abstract: It has been long recognized that properties of multiphase polymer systems are strongly dependent upon supramolecular structure. Examples of controlling supramolecular structure for property enhancement during fabrication include (a) control of molecular orientation and/or crystallization, and (b) establishing optimum morphology in multiphase polymer systems. Interfacial tension strongly influences multiphase polymer blend morphology, and compatablizers are frequently employed to manage interfacial tension in order to encourage the formation of a specifically desired morphology. This paper will discuss interfacial tension effects in ternary biphasic blends of polycarbonate, poly(methyl methacrylate), and poly(vinylidene fluoride). PMMA and PVdF are thermodynamically miscible and form one phase of the biphasic blend. The interfacial tension function was non-linear with respect to PMMA/PVdF phase composition, and this result will be rationalized by applying surface thermodynamic theory.