Synthesis and Interfacial Properties of New Generation Polyurethane Systems
Abstract
The thrust of this research has been to synthesize and study the structure-property relationships of several families of modified polyurethanes in three main areas. First, we have attempted to improve the mechanical properties of environmentally stable polyurethanes by inserting polar groups into non-polar soft segments and by using blends of the conventional (polar) and non-polar soft-segments. Early work examined the effect on segmental compatibility of introducing polar (cyanomethylethyl) groups into a non-polar (siloxane) soft segment. Blends of polar poly(tetramethylene oxide) (PTMO) and non-polar poly(dimethylsiloxane) (PDMS) were later used in soft segments in an effort to reduce polyurethane moisture sensitivity while retaining good mechanical properties. Second, we have studied the incorporation of novel pendant structures (UV-curable groups and ionic groups) in segmented polyurethanes, and the material properties of the resulting polymers. A liquid urethane methacrylate prepolymer and various methacrylate monomers were used to form semi-and-full interpenetrating networks (IPNs). Third, because molecular characterization is a critical tool in the interpretation of structure-property relationships for these materials, we have investigated the analysis of polyurethane molecular weight distributions and their relationship to synthesis conditions.
Document Details
- Document Type
- Technical Report
- Publication Date
- May 30, 1989
- Accession Number
- ADA210446
Entities
People
- Craig W. Myers
- Stuart L. Cooper
Organizations
- University of Wisconsin–Madison