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Microwave promoted synthesis and characterization of isomeric poly(ether ether ketone)s
Author(s) -
Li Man,
Zhang Aiqing,
Yin Jun,
Liew Kong Yong
Publication year - 2011
Publication title -
polymer engineering and science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.503
H-Index - 111
eISSN - 1548-2634
pISSN - 0032-3888
DOI - 10.1002/pen.21782
Subject(s) - ether , ketone , materials science , hydroquinone , thermal stability , crystallinity , anhydrous , polymer chemistry , nucleophilic substitution , nucleophilic aromatic substitution , polymer , peek , organic chemistry , chemistry , composite material
A series of isomeric poly(ether ether ketone)s were synthesized using microwave‐assisted method by nucleophilic substitution reaction of hydroquinone and 4,4′‐biphenol with 4,4′‐difluorobenzophenone (DFBP) or 2,4′‐DFBP in the presence of anhydrous K 2 CO 3 . The polymers with inherent viscosities in the range of 0.20–0.71 dlg −1 were obtained in quantitative yields and had excellent thermal stability as shown by the temperature of 5% weight loss in nitrogen above 410°C. X‐ray diffraction patterns confirmed the semicrystalline character of some of the polymers. The results also indicate that the reaction time was shortened remarkably and the reaction temperature could be controlled easily. POLYM. ENG. SCI., 2011. © 2010 Society of Plastics Engineers