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- Title
Novel copoly(ether ether ketone)s with pendant phenyl groups: synthesis and characterization.
- Authors
Wu, Ting; Liu, Pengqing; Shi, Meiwu; Lu, Jun; Ye, Guangdou; Xu, Jianjun
- Abstract
In order to obtain poly(ether ether ketone)s having enhanced solubility and processability without extreme loss of other properties, a series of copoly(ether ether ketone)s (Co-PEEKs) with pendant phenyl groups were synthesized from 1,1-bi(4-hydroxyphenyl)-1-phenylethane (ph-BPA), hydroquinone and 4,4′-difluorobenzophenone via aromatic nucleophilic substitution reaction. The structures and properties of the Co-PEEKs were characterized using Fourier transform infrared and 1H NMR spectroscopies, differential scanning calorimetry, thermogravimetric analysis, wide-angle X-ray diffraction and solubility testing. These Co-PEEKs have inherent viscosities in the range 0.14-1.09 dL g−1, and their number-average and weight-average molecular weights reach 72 659 and 163 400 g mol−1, respectively. The Co-PEEK with the lowest content of ph-BPA has a semi-crystalline nature and is only soluble in 98% sulfuric acid. However, with an increase of ph-BPA in the Co-PEEKs, they become amorphous and readily soluble in a wide range of organic solvents and can afford tough films. These Co-PEEKs have glass transition temperatures of 137-180 °C depending on the content of ph-BPA. All the Co-PEEKs have initial degradation temperatures above 480 °C in nitrogen atmosphere. Thus, these Co-PEEKs with excellent thermal stability, good solubility and processability have potential for use in high-performance films, coatings, hollow fiber membranes, etc. Copyright © 2011 Society of Chemical Industry
- Subjects
POLYETHERS; POLYMERS; KETONES; PHENYL compounds; NUCLEOPHILIC reactions
- Publication
Polymer International, 2011, Vol 60, Issue 9, p1318
- ISSN
0959-8103
- Publication type
Article
- DOI
10.1002/pi.3083