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Graft copolymer modification of polyethylene–polystyrene blends. II. Properties of modified blends
Author(s) -
Locke C. E.,
Paul D. R.
Publication year - 1973
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.1973.070170916
Subject(s) - polystyrene , polyethylene , materials science , copolymer , elongation , grafting , styrene , low density polyethylene , yield (engineering) , composite material , irradiation , polymer chemistry , ultimate tensile strength , polymer , physics , nuclear physics
The use of graft copolymers of styrene onto polyethylene as additives to improve the mechanical properties of polyethylene–polystyrene blends is described. Blends containing equal proportions of low‐density polyethylene and polystyrene were selected for this study since this composition represents the poorest balance of properties in this system. Graft addition generally increased both the yield strength and the elongation at break of the blend. Of the grafts employed, those prepared at an irradiation dose near 0.5 megarad appear optimal for this purpose. These conditions apparently balance the beneficial effects of grafting extent and the detrimental effects of crosslinking, both of which increase with irradiation dose.