CF/PA12 composite femoral stems : Manufacturing and properties

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DOIResolve DOI: http://doi.org/10.1016/j.compositesa.2008.01.016
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TypeArticle
Journal titleComposites Part A: Applied Science and Manufacturing
Volume39
Issue5
Pages796804; # of pages: 9
SubjectA. Carbon fibers; A. Polymer matrix composites; B. Mechanical properties; E. Consolidation; Total hop prosthesis
AbstractThe fabrication process for a novel carbon fiber-reinforced polymer (polyamide 12) composite femoral stem using inflatable bladder molding was studied. Effect of processing temperature, holding time and applied internal pressure on the consolidation quality of the composite was investigated. Consolidation quality was evaluated by density and void content measurements and scanning electron microscope analysis. As expected, void content (porosities) and presence of large resin pockets were found to increase for lower processing temperature, holding time and applied pressure. Crystallinity as well as melting temperatures measured using differential scanning calorimetry could be related to molding conditions. A progressive reduction of the previous thermal history (crystalline peak of neat composite) and an increase in crystallinity were obtained for higher molding temperature. Static compression testing with void content analysis of molded specimens was used to determine optimal molding conditions. The composite structure molded showed compressive modulus close to cortical bone’s. Compression load at failure of composites molded in optimal conditions were found to be three times higher than those of femoral bone for jumping on one leg or 10 times those for normal gait. The molded composite structure appears to be an excellent candidate for femoral stems used in total hip arthroplasty.
Publication date
LanguageEnglish
AffiliationNational Research Council Canada (NRC-CNRC); NRC Industrial Materials Institute
Peer reviewedYes
NRC number53723
NPARC number15895945
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Record identifier5b40a968-1742-42c2-b0bf-2c9394cfcfe4
Record created2010-08-17
Record modified2016-05-09
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