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Exchange reactions on polyarylate-phenoxy blends: Their influence on the physical and mechanical behaviour
Affiliation:1. Department of Inorganic Chemistry, V.N. Karazin Kharkiv National University, Svoboda sq., 4, Kharkiv 61022, Ukraine;2. MEMPHYS — Center for Biomembrane Physics, Odense M. 5320, Denmark;1. Department of Chemistry, School of Chemical and Biotechnology, SASTRA University, Thanjavur, 613 401, India;2. Center for Computational Chemistry and Materials Science (CCCMS), SASTRA University, Thanjavur, 613 401, India;3. Biomolecular Crystallography Laboratory, Department of Bioinformatics, School of Chemical and Biotechnology, SASTRA University, Thanjavur 613 401, India;1. Laboratoire de Chimie des Matériaux, Faculté des Sciences de Bizerte, Université de Carthage, 7021 Zarzouna, Bizerte, Tunisia;2. Departamento/Centro de Física, Universidade do Minho, Campus de Gualtar, 4710-057 Braga, Portugal;3. Departamento/Centro de Química, Universidade do Minho, Campus de Gualtar, 4710-057 Braga, Portugal;4. MEMS-UMinho, Universidade do Minho, Campus de Azurém, 4800-058 Guimarães, Portugal;5. BCMaterials, Parque Científico y Tecnológico de Bizkaia, 48160 Derio, Spain;6. IKERBASQUE, Basque Foundation for Science, Bilbao, Spain
Abstract:The possibility of interchange reactions in blends of the polyarylate of bisphenol A and the polyhydroxyether of bisphenol A is considered by examining the changes in the melt-viscosity for various mixing times. The immiscibility of this blend is confirmed by measurements of the softening temperature. The DSC technique is used to show the variation produced in the structure of the blends as a consequence of the development of interchange reactions. The influence of the exchange process on the mechanical behaviour is shown by the improvement observed in the elastic modulus of the reacted mixtures compared with that of the corresponding unreacted blends.
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