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Structural study on poly(ether ether ketone ketone)‐poly(ether biphenyl ether ketone ketone) copolymers
Author(s) -
Zhang Hongfang,
Yang Baoquan,
Mo Zhishen,
Na Hui,
Wu Zhongwen
Publication year - 1996
Publication title -
macromolecular rapid communications
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.348
H-Index - 154
eISSN - 1521-3927
pISSN - 1022-1336
DOI - 10.1002/marc.1996.030170207
Subject(s) - ketone , ether , biphenyl , crystallinity , copolymer , polymer chemistry , chemistry , materials science , organic chemistry , polymer , crystallography
Structures of poly(ether ether ketone ketone)‐poly(ether biphenyl ether ketone ketone) copolymers were studied by using small angle X‐ray scattering and the one‐dimensional electron density correlation function method. The results revealed that structures of the aggregated state of the copolymers depend closely on the biphenyl content ( n b ). When n b = 0.35, invariant Q , long period L , average thickness of crystal lamellae d̄, electron density difference η c − η a and degree of crystallinity W c, x assume minimum values.