Comparison of Carboxylated and Sulfonated Model Polyurethane Ionomers

Abstract

A series of model polyurethane ionomers containing uniform placement of the ionic groups along the chain has been synthesized in order to study the ionomer structure-property relationship in a well defined system. The materials were synthesized to vary in anion type (sulfonate vs. carboxylate), ionization level, and backbone soft segment polarity. The sulfonated ionomers possessed a higher degree of phase separation and superior mechanical properties compared to their carboxylated analogs. A critical minimum ionization level was found to be necessary for the development of good elastometric properties. The model ionomers are 1:1 copolymers of either poly(tetramethylene oxide) (PTMO) or poly(propylene oxide) and tolylene diisocyanate (TDI).

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Document Details

Document Type
Technical Report
Publication Date
May 30, 1989
Accession Number
ADA210438

Entities

People

  • Stuart L. Cooper
  • Susan A. Visser

Organizations

  • University of Wisconsin–Madison

Tags

DTIC Thesaurus Topics

  • Films
  • Glass Transition Temperature
  • Ionization
  • Materials
  • Mechanical Properties
  • Molecular Weight
  • Phase
  • Physical Properties
  • Polymers
  • Polyurethanes
  • Spine
  • Strain Hardening
  • Stress Strain Relations
  • Stresses
  • Tensile Properties
  • Tensile Testing
  • Transition Temperature

Fields of Study

  • Chemistry
  • Materials science

Readers

  • Polymer Science and Technology

Technology Areas

  • Microelectronics