Accession Number:

AD0633787

Title:

PROPERTIES OF LINEAR ELASTOMERIC POLYURETHANES.

Descriptive Note:

Technical rept.,

Corporate Author:

FRICK CHEMICAL LAB PRINCETON UNIV N J

Personal Author(s):

Report Date:

1966-05-01

Pagination or Media Count:

20.0

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

Subject Categories:

  • Plastics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE