Segmented polyurethanes derived from novel siloxane-carbonate soft segments for biomedical applications

Taeyi Choi, Kevin A. Masser, Erica Moore, Jadwiga Weksler, Ajay Padsalgikar, James Patrick Runt

Research output: Contribution to journalArticle

36 Scopus citations

Abstract

A novel macrodiol based on mixed silicone and carbonate chemistries was synthesized and used as a soft segment precursor in the synthesis of two series of segmented polyurethane (PU) copolymers varying in hard segment content and soft segment molecular weight. The hard segments in these copolymers were derived from 4,4-methylene diphenyl diisocyanate and 1,4-butane diol. The phase transitions, microphase separation behavior, and mechanical properties of the copolymers were investigated using a variety of experimental methods. When compared with segmented PU copolymers having predominately poly(dimethyl siloxane) soft segments, these siloxane-carbonate soft segment copolymers exhibit enhanced intersegment mixing, and consequently relatively low mechanical modulus. With relatively low modulus and siloxane units in the soft phase, the siloxane-carbonate PUs have potential for use in cardiac and orthopedic biomedical applications.

Original languageEnglish (US)
Pages (from-to)865-872
Number of pages8
JournalJournal of Polymer Science, Part B: Polymer Physics
Volume49
Issue number12
DOIs
StatePublished - Jun 15 2011

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics
  • Physical and Theoretical Chemistry
  • Polymers and Plastics
  • Materials Chemistry

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