Deformational properties of irradiated composite materials based on PET and PE

摘要

Considering the wide appiicability of poiymeric composite materials, heterogeneous blends of poly(ethylene terephtalate) (PET) and polyethyienes of high and Iow densities (HDPE and LDPE, respectiveiy) were investigated. Rheologicai (the flow-behavior index), mechanical (the yield strength and the Charpy impact strength), and morphological (crystailinity and melting temperature) properties, were detected for individua! blend components and different blend compositions. A radiation treatment (y-rays) was applied to improve certain characteristics of the heterogeneous blends. The results of this investigation show that the radiation modification can be successfully used to improve some physical properties of the PET-based blends and to choose of individual blend components, Optimum irradiation conditions, and desirabie blend compositions, which allows producing materials with a predictable set of mechanical properties.