Properties of Multiphase Polyurethane Systems.

Abstract

The incorporation of urea linkages in the polyurethane hard segment has a profound effect on the phase separation and domain structure of polyether polyurethaneureas (PEUU's). This is due to the high polarity difference between the hard and soft segments and the likely development of a three dimensional hydrogen bonding network. A new series of PEUU's was synthesized from 4,4'-diphenyl methane diisocyanate, ethylene diamine and poly(tetramethylene oxide) (PTMO). The molar ratios of the reactants and the soft segment (PTMO) molecular weight were varied to produce samples of varying hard segment content and block length. Previously (1981-82) we reported results of thermal, dynamic mechanical and tensile experiments on these materials. In the past year we have continued our investigation of these materials using IR spectroscopy.

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Document Details

Document Type
Technical Report
Publication Date
Jul 01, 1983
Accession Number
ADA137542

Entities

People

  • S. L. Cooper

Organizations

  • University of Wisconsin–Madison

Tags

Communities of Interest

  • Air Platforms
  • Ground and Sea Platforms
  • Space

DTIC Thesaurus Topics

  • Alkenes
  • Biomedical And Dental Materials
  • Chemical Synthesis
  • Chemistry
  • Glass Transition Temperature
  • Materials
  • Materials Laboratories
  • Mechanics
  • Molecular Weight
  • Organic Chemistry
  • Phase Separation
  • Physical Properties
  • Polymer Chemistry
  • Polymeric Films
  • Tensile Properties
  • Three Dimensional
  • Transition Temperature

Fields of Study

  • Materials science

Readers

  • Polymer Science and Engineering.
  • Quantum Chemistry