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Study of the crystal structure of P(HBA/HNA)/PET blend fibers
Author(s) -
Xiao Changfa,
Zhang Yufeng,
Wu Shizhen,
Takahashi Toshisada
Publication year - 2001
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.10028
Subject(s) - copolyester , crystallite , supercooling , materials science , differential scanning calorimetry , fiber , synthetic fiber , ethylene , composite material , crystal (programming language) , polymer chemistry , crystallography , polyester , chemistry , organic chemistry , thermodynamics , physics , metallurgy , catalysis , computer science , programming language
Abstract The crystal structure of p ‐hydroxybenzoate/2‐hydroxy‐6‐naphthoic acid copolyester [P(HBA/HNA)]/poly(ethylene terephthalate) (PET) blend (ACPET) fiber was studied with wide‐angle X‐ray diffraction and differential scanning calorimetry. The results showed that crystallites of P(HBA/HNA) and PET were formed in ACPET fibers; that is, some crystallites of ACPET fiber were composed of PET chains, and others were composed of P(HBA/HNA) chains. The thermal behaviors of the crystals of each component in the blend fiber were different from those of each corresponding pure component. For the fibers heat‐treated at 300 and 350°C, the degree of supercooling of P(HBA/HNA) segments in the blend fibers was the same as that of P(HBA/HNA) fiber, but the degree of supercooling of PET in the blend fibers was distinctly higher than that of pure PET fibers. Evidently, the aforementioned changes were attributable to the blending of PET with P(HBA/HNA). © 2002 Wiley Periodicals, Inc. J Appl Polym Sci 83: 394–400, 2002