Probing effects of alternately-embedded phenoxy phenyl lateral groups on properties of novel aromatic poly(ether-urea)s

Authors

  • Hossein Behniafar,

    Corresponding author
    1. Polymer-Organic Group, School of Chemistry, Damghan University of Basic Sciences, 36715-364 Damghan, Iran
    • Polymer-Organic Group, School of Chemistry, Damghan University of Basic Sciences, 36715-364 Damghan, Iran
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  • Hamid Sadeghi-Abendansari

    1. Polymer-Organic Group, School of Chemistry, Damghan University of Basic Sciences, 36715-364 Damghan, Iran
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Abstract

A new class of alternate aromatic poly(ether-urea)s having bulky phenoxy phenyl lateral groups was prepared by the reaction of 2,2′-bis[(p-phenoxy phenyl)]-4,4′-diaminodiphenyl ether (PPAPE) with two diisocyanates, isophorone diisocyanate and 2,4-tolylene diisocyanate. The limited viscosity values as well as Mn and Mw values of the resulting polymers were determined. The resulting poly(ether-urea)s could be easily cast into optically-transparent, flexible, and light color films. The cut-off wavelength values and the percentage of transmittance at 800 nm were found to be at about 415 nm and 85%, respectively. PPAPE-derived poly(ether-urea)s showed a low-crystallinity and had excellent solubility in polar organic solvents. Tonset, Tg, Td5%, and Td10% values of the PPAPE-derived polymers measured from their DSC and TGA thermograms were up to 270, 280, 315, and 340°C, respectively. Surface morphology of the resulted poly(ether-urea)s were also evaluated by their scanning electron microscopy images. Excellent organo-solubility, satisfactory film quality, moderate Tg values, and good thermal stability make this class of poly (ether-urea)s promising high-performance polymeric materials. © 2010 Wiley Periodicals, Inc. J Appl Polym Sci, 2010

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