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Morphology and Properties of Segmented Polyurethane-Urea Copolymers Prepared VIA t-Alcohol “Chain Extension”

  • Dinesh Tyagi
  • Garth L. Wilkes
  • Bin Lee
  • James E. McGrath

Abstract

The structure-property behavior of novel tertiary alcohol-chain extended segmented polyurethane-urea copolymers was investigated. These copolymers were synthesized by utilizing the carbamate-isocyanate interaction at 150°C. Mechanical, thermal, dynamic mechanical and x-ray measurements were carried out to characterize the morphology and other characteristics of these segmented copolymers of systematically varying hard segment content, hard segment type, soft segment MW, and block length. It was observed that these properties depended primarily on the order in the hard domains and the order could be improved by increasing either the hard segment content at constant soft segment MW or soft segment molecular weight at the same hard segment content. The results obtained for these materials were compared with those from conventional polyurethanes to investigate the effect of intermolecular hydrogen bonding on molecular arrangement.

Keywords

Hard Segment Soft Segment Tertiary Alcohol Hard Segment Content Hard Domain 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer Science+Business Media New York 1986

Authors and Affiliations

  • Dinesh Tyagi
    • 1
  • Garth L. Wilkes
    • 1
  • Bin Lee
    • 2
  • James E. McGrath
    • 2
  1. 1.Department of Chemical EngineeringVirginia Polytechnic Institute & State UniversityBlacksburgUSA
  2. 2.Department of Chemistry and Polymer Materials and Interfaces LaboratoryVirginia Polytechnic Institute & State UniversityBlacksburgUSA

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