Morphologic changes on processing of polyblends of saturated rubber-reinforced plastics
Article first published online: 9 MAR 2003
Copyright © 1975 John Wiley & Sons, Inc.
Journal of Applied Polymer Science
Volume 19, Issue 6, pages 1625–1637, June 1975
How to Cite
Koiwa, S. (1975), Morphologic changes on processing of polyblends of saturated rubber-reinforced plastics. J. Appl. Polym. Sci., 19: 1625–1637. doi: 10.1002/app.1975.070190614
- Issue published online: 9 MAR 2003
- Article first published online: 9 MAR 2003
Laminar peeling is often observed on the injection-molded surface of the saturated rubbermodified plastics (EVASTAN), which are prepared by copolymerizing styrene and acrylonitrile in the presence of ethylene–vinylacetate copolymer (EVA). However, the delamination rarely occurs upon higher grafting and crosslinking EVASTAN with preactivated EVA, which has pendent unsaturation. The microstructure of these EVASTAN resins was observed by electron microscopy at the end of polymerization and after processing. It was found that the delamination is caused by the agglomeration and deformation of the EVA particles and is prevented by increasing the stability of the particles by grafting and crosslinking.