Carboxyl functionalised MWCNT/polymethyl methacrylate bone cement for orthopaedic applications

The incorporation of carboxyl functionalised multi-walled carbon nanotube (MWCNT-COOH) into a leading proprietary grade orthopaedic bone cement (Simplex P™) at 0.1 wt% has been investigated. Resultant static and fatigue mechanical properties, in addition to thermal and polymerisation properties, hav...

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Bibliographic Details
Published in:Journal of biomaterials applications 2014-08, Vol.29 (2), p.209-221
Main Authors: Ormsby, Ross W, Modreanu, Mircea, Mitchell, Christina A, Dunne, Nicholas J
Format: Article
Language:English
Subjects:
Addition polymerization
Bone cements
Compressive properties
Dispersions
Fatigue (materials)
Fatigue failure
Performance indices
Polymerization
Polymethyl methacrylates
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Summary:The incorporation of carboxyl functionalised multi-walled carbon nanotube (MWCNT-COOH) into a leading proprietary grade orthopaedic bone cement (Simplex P™) at 0.1 wt% has been investigated. Resultant static and fatigue mechanical properties, in addition to thermal and polymerisation properties, have been determined. Significant improvements (p ≤ 0.001) in bending strength (42%), bending modulus (55%) and fracture toughness (22%) were demonstrated. Fatigue properties were improved (p ≤ 0.001), with mean number of cycles to failure and fatigue performance index being increased by 64% and 52%, respectively. Thermal necrosis index values at ≥44℃ and ≥55℃ were significantly reduced (p ≤ 0.001) (28% and 27%) versus the control. Furthermore, the onset of polymerisation increased by 58% (p 
ISSN:0885-3282
1530-8022
DOI:10.1177/0885328214521252