Accession Number:

ADA230966

Title:

Synthesis, Structure and Properties of Segmented Polyurethanes

Descriptive Note:

Final rept. 15 Aug 1987-14 Aug 1990

Corporate Author:

MASSACHUSETTS UNIV AMHERST DEPT OF POLYMER SCIENCE AND ENGINEERING

Personal Author(s):

• MacKnight, William J.

Report Date:

1990-10-31

Pagination or Media Count:

5.0

Abstract:

The effect of the introduction of mesogenic groups on the properties and structure of segmented polyurethanes was investigated. The objectives were to determine to what extent the phase behavior of such polyurethanes is controlled by the phase behavior of the mesogen and the effect of structural considerations such as hydrogen bonding and asymmetric placement of methyl groups on the phase behavior. A summary of the most important results appears in the final report.

Descriptors:

• *POLYURETHANE RESINS
• METHYL RADICALS
• SYNTHESIS
• PHASE STUDIES
• SEGMENTED
• EMPLACEMENT
• BEHAVIOR
• HYDROGEN BONDS
• ASYMMETRY

Subject Categories:

• Organic Chemistry

Distribution Statement:

APPROVED FOR PUBLIC RELEASE