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In vitro biostability evaluation of polyurethane composites in acidic, basic, oxidative, and neutral solutions
Author(s) -
Lyu SuPing,
Schley James,
Loy Brian,
Luo Lian,
Hobot Chris,
Sparer Randall,
Untereker Darrel,
Krzeszak Jason
Publication year - 2008
Publication title -
journal of biomedical materials research part b: applied biomaterials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.665
H-Index - 108
eISSN - 1552-4981
pISSN - 1552-4973
DOI - 10.1002/jbm.b.30973
Subject(s) - compounding , composite material , materials science , polyurethane , composite number , degradation (telecommunications) , polymer , filler (materials) , matrix (chemical analysis) , computer science , telecommunications
New and improved properties can often be achieved by compounding two or more different but compatible materials. But, can failure possibility also be increased by such a compounding strategy? In this article, we compared the in vitro biostability of composites with that of the pure polymer. We tested three model composites in oxidative, acidic, basic, and neutral solutions. We found that oxidation degradation was much more profound in the composites than in the corresponding pure polymer. This degradation seemed to be an intrinsic property of composite materials. We also observed the well documented interfacial debonding between filler and matrix and its effects on the mechanical reinforcement of the hydrated composites. The improvements in acid and base resistance were also observed. © 2007 Wiley Periodicals, Inc. J Biomed Mater Res Part B: Appl Biomater, 2008