A1 Vertaisarvioitu alkuperäisartikkeli tieteellisessä lehdessä

Static and dynamic mechanical properties of graphene oxide-based bone cementing agents




TekijätKhan AA, Mirza EH, Mohamed BA, El-Sharawy MA, Al-Asmari MH, Al-Khureif AA, Dar MA, Vallittu PK

KustantajaSAGE PUBLICATIONS LTD

Julkaisuvuosi2019

JournalJournal of Composite Materials

Tietokannassa oleva lehden nimiJOURNAL OF COMPOSITE MATERIALS

Lehden akronyymiJ COMPOS MATER

Vuosikerta53

Numero16

Aloitussivu2297

Lopetussivu2304

Sivujen määrä8

ISSN0021-9983

eISSN1530-793X

DOIhttps://doi.org/10.1177/0021998319826347


Tiivistelmä
The purpose of this laboratory study was to formulate graphene oxide (GO) nano-sheets and characterize composites of homogenously dispersed GO sheets in poly(methyl methacrylate) (PMMA) acrylic resin of two groups, i.e., with 0.025 wt/wt.% GO (GO1-group) and 0.05 wt/wt.% GO (GO2-group). A large array of surface, mechanical and dynamic mechanical properties, including creep, recovery, stress relaxation behaviour and temperature and frequency sweep of the formulated bone cements were further characterized. Analysis of variance test results (p = 0.05, n = 5) indicated that the nanohardness and elastic modulus of the experimental groups were not significantly different from those of the control. Micro-computed tomography results showed high porosity in the experimental groups. The compressive strength significantly increased both in GO1- and GO2-group under dry and wet storage conditions. The dynamic mechanical properties suggest a desirable role of GO in polymerization with PMMA. The produced GO-PMMA composites exhibited the expected characteristics, so their use in developing low-loading bone cement composites appears to be promising.



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