TY - JOUR
T1 - Effect of soft segment chemistry on the biostability of segmented polyurethanes. I. In vitro oxidation
AU - Takahara, Atsushi
AU - Coury, Arthur J.
AU - Hergenrother, Robert W.
AU - Cooper, Stuart L.
PY - 1991/3
Y1 - 1991/3
N2 - A series of segmented polyurethanes (SPUs) containing various polyol soft segments was prepared and their resistance to oxidative degradation was investigated after aging in AgNO3 solution. The SPU with the polyether soft segment showed a large reduction in mechanical strength after exposure to the oxidative environment. Surface cracking was often observed for these specimens. XPS measurements revealed that scission of the ether linkage occurs upon oxidation. The oxidative resistance of SPUs containing aliphatic hydrocarbon soft segments was significantly improved over the poly(tetramethylene oxide) (PTMO) based polyurethane.
AB - A series of segmented polyurethanes (SPUs) containing various polyol soft segments was prepared and their resistance to oxidative degradation was investigated after aging in AgNO3 solution. The SPU with the polyether soft segment showed a large reduction in mechanical strength after exposure to the oxidative environment. Surface cracking was often observed for these specimens. XPS measurements revealed that scission of the ether linkage occurs upon oxidation. The oxidative resistance of SPUs containing aliphatic hydrocarbon soft segments was significantly improved over the poly(tetramethylene oxide) (PTMO) based polyurethane.
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U2 - 10.1002/jbm.820250306
DO - 10.1002/jbm.820250306
M3 - Article
C2 - 2026639
AN - SCOPUS:0026128999
SN - 0021-9304
VL - 25
SP - 341
EP - 356
JO - Journal of Biomedical Materials Research
JF - Journal of Biomedical Materials Research
IS - 3
ER -