A1 Refereed original research article in a scientific journal

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




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

PublisherSAGE PUBLICATIONS LTD

Publication year2019

JournalJournal of Composite Materials

Journal name in sourceJOURNAL OF COMPOSITE MATERIALS

Journal acronymJ COMPOS MATER

Volume53

Issue16

First page 2297

Last page2304

Number of pages8

ISSN0021-9983

eISSN1530-793X

DOIhttps://doi.org/10.1177/0021998319826347


Abstract
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.



Last updated on 2024-26-11 at 14:25