Synthesis and Physical Properties of Poly(Perfluoroalkylether)Urethanes

Abstract

Polyurethane block copolymers were synthesized containing 33 and 50 wt% soft segment, and hard segment based on 4,4-diphenylmethane dissocyanate (MDI) chain extender. The soft segments were mixtures of poly(tetramethylene oxide) (PTMO) and poly(perfluoroalkylether) (PFEG) glycols (Mn=1000 and 1900, respectively), ranging from 4 to 100wt% PFEG. The PMTO polyol in one sample was substituted with a PMTO/ethylene oxide polyol (75:25 mole ratio) (Mn=1140). The MDEA-extended polymer was ionized using 1,3-propane sultone. The morphology, bulk, and surface properties of these polymers were evaluated by a variety of techniques. Differential scanning calorimetry and dynamic mechanical analysis showed that the incorporation of PFEG into the soft segment phase slightly enhanced the degree of phase separation. Polyurethanes; Poly(perfluoroalkylether); Mixed soft segment; Polymers; Organic chemistry.

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Document Details

Document Type
Technical Report
Publication Date
May 30, 1989
Accession Number
ADA210500

Entities

People

  • Ann Z. Okkema
  • Stuart L. Cooper
  • Xue-hai Yu

Organizations

  • University of Wisconsin–Madison

Tags

Communities of Interest

  • Advanced Electronics

DTIC Thesaurus Topics

  • Biomedical And Dental Materials
  • Block Copolymers
  • Chemical Analysis
  • Chemistry
  • Ethylene Oxide
  • Materials
  • Materials Science
  • Mechanical Properties
  • Phase Separation
  • Physical Properties
  • Polymers
  • Spectroscopy
  • Stress Strain Relations
  • Surface Energy
  • Surface Properties
  • Tensile Properties
  • Tensile Strength

Fields of Study

  • Chemistry
  • Materials science

Readers

  • Polymer Science and Technology

Technology Areas

  • Microelectronics