Journal
JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY
Volume 44, Issue 9, Pages 2990-3000Publisher
WILEY
DOI: 10.1002/pola.21373
Keywords
biodegradable; lysine diisocyanate; phase separation; polyurethanes; synthesis; thermoplastics
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A biodegradable aliphatic thermoplastic polyurethane based on L-lysine diisocyanate and 1,4-butanediol hard block segments, and 2000 g/mol poly(epsilon-caprolactone) diol soft block segments was synthesized. The resulting polymer was a tough thermoplastic with ultimate tensile strength of 33 MPa and elongation of 1000%. The polymer displayed classic segmented thermoplastic elastomer morphology with distinct hard block and soft block phases. Thermal and dynamic mechanical analyses determined that the material has a useful service temperature range of around -40 degrees C to +40 degrees C, making it an excellent candidate for low-temperature elastomer and film applications, and potentially as a material for use in temporary orthopedic implant devices. (c) 2006 Wiley Periodicals, Inc.
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