AMORPHIZATION OF POLYETHYLENE TEREPHTHALATE IN BLENDS WITH PET-G CONTAINING A CHAIN EXTENDER
Abstract
The present article studies the structural features of relaxation, mechanical and rheological properties of blends of crystallizing PET and amorphous PET-G containing 0.9 wt. % of a diisocyanate chain extender (CE). The analyzed materials were obtained by melt mixing in a twin-screw reactor-mixer with one-sided rotation of screws. It was shown that at a concentration of PET-G in a blend of ≥70 wt. % by weight, the crystallization of PET added with CE is completely suppressed. According to relaxation spectrometry, PET and PET-G are compatible when they are mixed in melt.
About the Authors
S. S. Pesetskii
V. A. Belyi Metal-Polymer Research Institute of the National Academy of Sciences of Belarus, Gomel
Belarus
Belarus
Corresponding Member, D. Sc. (Engineering), Professor. Head of the Department
32-а, Kirov Str., 246050
S. S. Strogоnova
Mogilevkhimvolokno Open Joint-stock Company, Mogilev
Belarus
Belarus
45, Shmidt Ave., 212035
V. N. Koval
V. A. Belyi Metal-Polymer Research Institute of the National Academy of Sciences of Belarus, Gomel
Belarus
Belarus
Ph. D. (Engineering), Head of the Sector
32-а, Kirov Str., 246050
V. V. Shevchenko
V. A. Belyi Metal-Polymer Research Institute of the National Academy of Sciences of Belarus, Gomel
Belarus
Belarus
Researcher
32-а, Kirov Str., 246050
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