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Processability, Structure and Mechanical Properties of Poly(ether imide)/Amorphous Copolyester Blends
Author(s) -
Granado Ainhoa,
Eguiazábal José Iqnacio,
Nazábal Jon
Publication year - 2010
Publication title -
macromolecular materials and engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.913
H-Index - 96
eISSN - 1439-2054
pISSN - 1438-7492
DOI - 10.1002/mame.200900378
Subject(s) - materials science , copolyester , composite material , amorphous solid , dynamic mechanical analysis , ductility (earth science) , imide , polymer chemistry , polymer , polyester , organic chemistry , chemistry , creep
Blends of PEI with an amorphous copolyester (PCTG) were obtained by melt‐mixing followed by injection molding. The processability of PEI increased several times upon addition of just 10% PCTG, thus expanding the applications of PEI. All the blends showed a single T g and most of them were transparent. However, they were biphasic as suggested by the widening of the T g 's and proved by SEM. A fine dispersed particle size and good adhesion level were also observed by SEM. The values of the modulus of elasticity and the yield stress appeared close the additivity rule, and were attributed to the combined effects of the density increase and orientation decrease in the blends. These morphological changes had a slightly negative influence on ductility which was nevertheless high.