Graphene composites with dental and biomedical applicability

Beilstein Journal of Nanotechnology

Ivan Khalakhan¹  Felicite M. Ruddock²  Sharali Malik³  Jonathan P. Hill⁴  Katsuhiko Ariga⁴  Lok Kumar Shrestha⁴  Hongxuan Guo⁴  Yoshihiro Nemoto⁴  Adam H. Dowling⁵  Kevin Byrne⁶  Wolfgang Schmitt⁶ 

[1] Charles University, Faculty of Mathematics and Physics, Department of Surface and Plasma Science, V Holešovičkách 2, 18000 Prague 8, Czech Republic;Department of Civil Engineering, Liverpool John Moores University, Byrom Street, Liverpool, L3 3AF, United Kingdom;Institute of Nanotechnology, Karlsruhe Institute of Technology (KIT), D-76131 Karlsruhe, Germany;International Center for Materials Nanoarchitectonics (WPI-MANA), National Institute for Materials Science (NIMS), Namiki 1-1, Tsukuba, Japan;Materials Science Unit, Division of Oral Biosciences, Dublin Dental University Hospital, Trinity College Dublin, Lincoln Place, Dublin 2, Ireland;School of Chemistry and CRANN Institute, University of Dublin, Trinity College, Dublin 2, Ireland;

关键词: biocompatibility;    bioglass;    graphene;    mechanical properties;    nanocomposite;   

DOI  :  10.3762/bjnano.9.73

来源: DOAJ

【 摘 要 】

Pure graphene in the form of few-layer graphene (FLG) – 1 to 6 layers – is biocompatible and non-cytotoxic. This makes FLG an ideal material to incorporate into dental polymers to increase their strength and durability. It is well known that graphene has high mechanical strength and has been shown to enhance the mechanical, physical and chemical properties of biomaterials. However, for commercial applicability, methods to produce larger than lab-scale quantities of graphene are required. Here, we present a simple method to make large quantities of FLG starting with commercially available multi-layer graphene (MLG). This FLG material was then used to fabricate graphene dental-polymer composites. The resultant graphene-modified composites show that low concentrations of graphene (ca. 0.2 wt %) lead to enhanced performance improvement in physio-mechanical properties – the mean compressive strength increased by 27% and the mean compressive modulus increased by 22%. Herein we report a new, cheap and simple method to make large quantities of few-layer graphene which was then incorporated into a common dental polymer to fabricate graphene-composites which shows very promising mechanical properties.

【 授权许可】

Unknown