Premium
Studies on binary and ternary blends of polypropylene with SEBS, PS, and HDPE. II. Tensile and impact properties
Author(s) -
Gupta A. K.,
Purwar S. N.
Publication year - 1985
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.1985.070300502
Subject(s) - materials science , high density polyethylene , polypropylene , ultimate tensile strength , ternary operation , polymer blend , composite material , polystyrene , izod impact strength test , copolymer , polyethylene , polymer , polymer chemistry , computer science , programming language
Studies are reported on tensile and impact properties of several binary and ternary blends of polypropylene (PP), styrene‐ b ‐ethylene‐co‐butylene‐ b ‐styrene triblock copolymer (SEBS), high‐density polyethylene (HDPE), and polystyrene (PS). The blend compositions of the binary blends PP/ X were 10 wt % X and 90 wt % PP, while those of the ternary blends PP/ X/Y were 10 wt % of X and 90 wt % of PP/ Y , or 10 wt % Y and 90 wt % PP/ X (PP/ Y and PP/ X were of identical composition 90:10); X, Y being SEBS, HDPE, or PS. The results are interpreted for the effect of each individual component by comparing the binary blends with the reference system PP, and the ternary blends with the respective binary blends as the reference systems. The ternary blend PP/SEBS/HDPE showed properties distinctly superior to those of PP/SEBS/PS or the binary blends PP/SEBS and PP/HDPE. Differences in the tensile yield behavior of the different samples and their correlation with impact strength suggested shear yielding as the possible mechanism of enhancement of impact strength. Scanning electron microscopic study of the impact fractured surfaces also supports the shear yielding mechanism of impact toughening of these blends.