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The crystallization rate of poly(ethylene terephthalate) accelerated by co[poly(butylene terephthalate‐ p ‐oxybenzoate)] copolyesters
Author(s) -
Ou ChengFang,
Huang ShihLiang
Publication year - 2000
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/(sici)1097-4628(20000425)76:4<587::aid-app16>3.0.co;2-1
Subject(s) - copolyester , crystallization , materials science , differential scanning calorimetry , polymer chemistry , ethylene , solvent , chemical engineering , composite material , organic chemistry , polyester , chemistry , thermodynamics , engineering , catalysis , physics
Poly(ethylene terephthalate) (PET) was blended with three different kinds of co[poly(butylene terephthalate‐ p ‐oxybenzoate)] copolyesters, designated B28, B46, and B64, with the level of copolyester varying from 1 to 15 wt %. All samples were prepared by solution blending in a 60/40 by weight phenol/tetrachloroethane solvent at 50°C. The crystallization behavior of samples was then studied via differential scanning calorimetry. The results indicate that these three copolyesters accelerate the crystallization rate of PET in a manner similar to that of a nucleating agent. The acceleration of PET crystallization rate was most pronounced in the PET/B28 blends with a maximum level at 10 wt % of B28. The melting temperatures for the blends are comparable with that of pure PET. The observed changes in crystallization behavior are explained by the effect of the physical state of the copolyester during PET crystallization as well as the amount of copolyester in the blends. © 2000 John Wiley & Sons, Inc. J Appl Polym Sci 76: 587–593, 2000