Accession Number:

ADA210438

Title:

Comparison of Carboxylated and Sulfonated Model Polyurethane Ionomers

Descriptive Note:

Progress rept. 1 Jun 1988-31 May 1989

Corporate Author:

WISCONSIN UNIV-MADISON DEPT OF CHEMICAL ENGINEERING

Personal Author(s):

• Visser, Susan A.
• Cooper, Stuart L.

Report Date:

1989-05-30

Pagination or Media Count:

4.0

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 11 copolymers of either polytetramethylene oxide PTMO or polypropylene oxide and tolylene diisocyanate TDI.

Descriptors:

• *SULFONATES
• *CARBOXYL RADICALS
• *POLYURETHANE RESINS
• *IONOMERS
• OXIDES
• EMPLACEMENT
• IONIZATION
• CHEMICAL ANALOGS
• POLARITY
• POLYMERS
• ANIONS
• PROPENES
• PHASE
• SYNTHESIS(CHEMISTRY)
• SEPARATION

Subject Categories:

• Polymer Chemistry
• Plastics
• Elastomers and Rubber

Distribution Statement:

APPROVED FOR PUBLIC RELEASE