Preparation of segmented semifluorinated poly(aryl ether)s from aromatic trifluorovinyl ethers and oligo(ethylene glycol)s

TitlePreparation of segmented semifluorinated poly(aryl ether)s from aromatic trifluorovinyl ethers and oligo(ethylene glycol)s
Publication TypeJournal Article
Year of Publication2015
AuthorsBrown, D. K., Cracowski J. M., Iacono S. T., Christensen K., and Smith D. W.
JournalJournal of Applied Polymer Science
Volume132
Date PublishedApr 20
ISBN Number0021-8995
Accession NumberWOS:000348313800004
Keywordsaddition polymerization, block-copolymers, chain, differential scanning calorimetry (dsc), elastomers, polymers, proton-exchange membranes, sulfone), thermal properties, thermogravimetric analysis (tga)
Abstract

A series of new segmented semifluorinated polyaryl ethers (PAEs) containing a biphenyl segmented by semifluorinated oligoethylene (SFE) units were prepared by nucleophilic addition of a commercial oligo(ethylene glycol)s to 4,4'-bis(4-trifluorovinyloxy)biphenyl. These new thermoplastics were characterized by H-1 and F-19 nuclear magnetic resonance (NMR) and attenuated total reflectance Fourier transform infrared (ATR-FTIR). Gel permeation chromatography (GPC) analysis displayed number average molecular weights (M(n)s) from 9000 to 13,000. Thermal properties of the polymers were studied by differential scanning calorimetry (DSC) and thermal gravimetric analysis (TGA). DSC chromatograms displayed glass transition temperatures (T(g)s) from 11 to 1 degrees C. The onsets of degradations were observed by TGA analysis between 313 to 333 degrees C in air and 326 to 363 degrees C in nitrogen, respectively. A second onset of degradation was observed from 452 to 470 degrees C for all polymers. In addition, crystalline morphologies were studied by tapping mode atomic force microscopy (TM-AFM) and showed needle-like crystallites. (C) 2015 Wiley Periodicals, Inc.

Short TitlePreparation of segmented semifluorinated poly(aryl ether)s from aromatic trifluorovinyl ethers and oligo(ethylene glycol)s
Alternate JournalJ Appl Polym Sci