X-ray investigation of polypropylene and poly(ethylene-co-vinyl acetate) blends irradiated with fast electrons WAXS investigation of irradiated i-PP/EVA blends
M. Mihailova et al., X-ray investigation of polypropylene and poly(ethylene-co-vinyl acetate) blends irradiated with fast electrons WAXS investigation of irradiated i-PP/EVA blends, RADIAT PH C, 56(5-6), 1999, pp. 581-589
Blends consisting of poly(propylene-ethylene) (PP) and poly(ethylene-co-vin
yl acetate) (EVA) copolymers were investigated. Specimens were irradiated w
ith fast electrons at different doses. Some of the samples show thermo-shri
nkable properties. The interplanar spacing, paracrystalline factor, degree
of crystallinity and crystallite sizes were determined by WAXS measurements
. Results have been reported in respect to PP content and irradiation dose.
A decrease of the crystallite's imperfections with the rise of the irradia
tion dose was observed. An interface built up of partially interpenetrated
amorphous molecular chains of incompatible polymers and separate PP and EVA
small crystallites is suggested. (C) 1999 Elsevier Science Ltd. All rights
reserved.