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Melt rheology of blends of semicrystalline polymers. I. Degradation and viscosity of poly(ethylene terephthalate)–polyamide‐6,6 mixtures
Author(s) -
Utracki L. A.,
Catani A. M.,
Bata G. L.,
Kamal M. R.,
Tan V.
Publication year - 1982
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.1982.070270606
Subject(s) - materials science , rheology , polyamide , polymer , rheometer , shear rate , crystallinity , polymer chemistry , ethylene , polymer blend , kinetics , chemical engineering , polyester , composite material , organic chemistry , chemistry , copolymer , catalysis , engineering , quantum mechanics , physics
Melt rheology of poly(ethylene terephthalate)–polyamide‐6,6, and their blends was studied between 240°C and 300°C, in capillary and rotational rheometers. The flow curves were determined in the range of rate shear from about 10 −2 to 10 5 (s −1 ). The results indicate a considerable degree of compatibility, presence of associations between the two types of macromolecules, and cocrystallization. A new mechanism of flow for the blends has been proposed. The study also considers the kinetics of thermal degradation.