PROPERTIES OF LINEAR ELASTOMERIC POLYURETHANES.

Abstract

The viscoelastic properties of some polyester-urethanes are compared with the properties of other polymers. The behavior observed is anomalous in that these polyurethanes exhibit an unusually high value of modulus well above their T sub g, unaccounted for by either crosslinking or crystallinity. Various experiments including incorporation of plasticizers of widely varying chemical composition have suggested interpretation of the system as a block copolymer, each block having its own T sub g. Each of the two types of blocks seems to associate with similar blocks from other molecules. (Author)

Document Details

Document Type
Technical Report
Publication Date
May 01, 1966
Accession Number
AD0633787

Entities

People

  • Arthur V. Tobolsky
  • Stuart L. Cooper

Tags

DTIC Thesaurus Topics

  • Block Copolymers
  • Chemical Composition
  • Copolymers
  • Macromolecules
  • Molecules
  • Plasticizers
  • Plastics
  • Polyesters
  • Polymers
  • Polyurethanes
  • Urethanes

Readers

  • Atmospheric Science / Meteorology, specifically Wind Wave Turbulence.
  • Polymer Science and Technology

Technology Areas

  • Microelectronics