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Interfacial tension reduction and coalescence suppression in compatibilized polymer blends

โœ Scribed by Jean-Christophe Lepers; Basil D. Favis

Publisher
American Institute of Chemical Engineers
Year
1999
Tongue
English
Weight
112 KB
Volume
45
Category
Article
ISSN
0001-1541

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โœฆ Synopsis

work examines the influence of well-defined diblock copolymers on the interfacial tension and morphology of an immiscible polymer blend. The system studied is a blend of 80% polystyrene and 20% ethylene propylene copolymer compatibilized by ( ) diblock copolymers of poly styrene-hydrogenated butadiene . The diblocks differed in ( ) ( that one contained 53% styrene symmetric diblock and the other 30% styrene asym-) metric diblock . The interfacial tension was performed using the breaking-thread technique, and the results were compared to both the theoretical predictions of Noolandi and Hong, and Leibler. The morphology was tracked using an emulsification curยฎe, comparison of which with the interfacial tension results made it possible to estimate the relatiยฎe role of interfacial tension and coalescence reduction in particle-size reduction phenomena.

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