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Incorporation of multiwalled carbon nanotubes to acrylic based bone cements : effects on mechanical and thermal properties
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Ormsby, Ross W., McNally, Tony, Mitchell, Christina A. and Dunne, Nicholas J. (2010) Incorporation of multiwalled carbon nanotubes to acrylic based bone cements : effects on mechanical and thermal properties. Journal of the Mechanical Behavior of Biomedical Materials, 3 (2). pp. 136-145. doi:10.1016/j.jmbbm.2009.10.002 ISSN 1751-6161.
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Official URL: http://dx.doi.org/10.1016/j.jmbbm.2009.10.002
Abstract
Polymethyl methacrylate (PMMA) bone cement–multiwalled carbon nanotube (MWCNT) nanocomposites with a weight loading of 0.1% were prepared using 3 different methods of MWCNT incorporation. The mechanical and thermal properties of the resultant nanocomposite cements were characterised in accordance with the international standard for acrylic resin cements. The mechanical properties of the resultant nanocomposite cements were influenced by the type of MWCNT and method of incorporation used. The exothermic polymerisation reaction for the PMMA bone cement was significantly reduced when thermally conductive functionalised MWCNTs were added. This reduction in exotherm translated in a decrease in thermal necrosis index value of the respective nanocomposite cements, which potentially could reduce the hyperthermia experienced in vivo. The morphology and degree of dispersion of the MWCNTs in the PMMA matrix at different scales were analysed using scanning electron microscopy. Improvements in mechanical properties were attributed to the MWCNTs arresting/retarding crack propagation through the cement by providing a bridging effect into the wake of the crack, normal to the direction of crack growth. MWCNT agglomerations were evident within the cement microstructure, the degree of these agglomerations was dependent on the method used to incorporate the MWCNTs into the cement.
Item Type: | Journal Article | ||||||
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Subjects: | T Technology > TA Engineering (General). Civil engineering (General) | ||||||
Divisions: | Faculty of Science, Engineering and Medicine > Engineering > WMG (Formerly the Warwick Manufacturing Group) | ||||||
Library of Congress Subject Headings (LCSH): | Carbon nanotubes, Polymethylmethacrylate, Polymers -- Thermal properties, Bone cements | ||||||
Journal or Publication Title: | Journal of the Mechanical Behavior of Biomedical Materials | ||||||
Publisher: | Elsevier BV | ||||||
ISSN: | 1751-6161 | ||||||
Official Date: | February 2010 | ||||||
Dates: |
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Volume: | 3 | ||||||
Number: | 2 | ||||||
Page Range: | pp. 136-145 | ||||||
DOI: | 10.1016/j.jmbbm.2009.10.002 | ||||||
Status: | Peer Reviewed | ||||||
Publication Status: | Published | ||||||
Access rights to Published version: | Restricted or Subscription Access | ||||||
RIOXX Funder/Project Grant: |
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