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Influence of annealing on structure of poly(aryl ether ether ketone ketone) revealed by SAXS
Author(s) -
Liu Tianxi,
Mo Zhishen,
Zhang Hongfang,
Li Guang
Publication year - 1998
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(19980829)69:9<1829::aid-app18>3.0.co;2-g
Subject(s) - ether , ketone , small angle x ray scattering , crystallinity , aryl , annealing (glass) , amorphous solid , polymer chemistry , materials science , crystallography , chemistry , scattering , organic chemistry , alkyl , composite material , physics , optics
Structural studies of poly(aryl ether ether ketone ketone) (PEEKK) using small‐angle X‐ray scattering and one‐dimensional electron density correlation function methods revealed that its aggregated state structure was significantly influenced by the annealing temperature. The long period L , the average thickness of the lamellae d , the electron density difference between the crystalline and amorphous regions η c − η a , and the invariant Q increased with increasing annealing temperature, but it was opposite to the case of the specific inner surfaces O s . A transition zone existed between the traditional “two phases” with a dimension about 0.5 nm for semicrystalline PEEKK. © 1998 John Wiley & Sons, Inc. J Appl Polym Sci 69: 1829–1835, 1998