TY - JOUR
T1 - Electrophoretic deposition of calcium silicate-reduced graphene oxide composites on titanium substrate
AU - Mehrali, Mehdi
AU - Akhiani, Amir Reza
AU - Talebian, Sepehr
AU - Mehrali, Mohammad
AU - Latibari, Sara Tahan
AU - Dolatshahi-Pirouz, Alireza
AU - Metselaar, Hendrik Simon Cornelis
PY - 2016
Y1 - 2016
N2 - Calcium silicate (CS)/graphene coatings have been used to improve the biological and mechanical fixation of metallic prosthesis. Among the extraordinary features of graphene is its very high mechanical strength, which makes it an attractive nanoreinforcement material for composites. Calcium silicate-reduced graphene oxide (CS-rGO) composites were synthesized, using an in situ hydrothermal method. CS nanowires were uniformly decorated on the rGO, with an appropriate interfacial bonding. The CS-rGO composites behaved like hybrid composites when deposited on a titanium substrate by cathodic electrophoretic deposition (EPD). Compared to a pure CS coating on Ti, the CS-1. wt% rGO coating has improved adhesion by 70%, hardness by 150% and the elastic modulus by 240%. The CS-rGO composite coatings exhibit good apatite-forming ability in simulated body fluid (SBF). Moreover, the effect of addition of rGO on morphology, adhesion and proliferation of human osteoblast cells (hFOB) was investigated in vitro.
AB - Calcium silicate (CS)/graphene coatings have been used to improve the biological and mechanical fixation of metallic prosthesis. Among the extraordinary features of graphene is its very high mechanical strength, which makes it an attractive nanoreinforcement material for composites. Calcium silicate-reduced graphene oxide (CS-rGO) composites were synthesized, using an in situ hydrothermal method. CS nanowires were uniformly decorated on the rGO, with an appropriate interfacial bonding. The CS-rGO composites behaved like hybrid composites when deposited on a titanium substrate by cathodic electrophoretic deposition (EPD). Compared to a pure CS coating on Ti, the CS-1. wt% rGO coating has improved adhesion by 70%, hardness by 150% and the elastic modulus by 240%. The CS-rGO composite coatings exhibit good apatite-forming ability in simulated body fluid (SBF). Moreover, the effect of addition of rGO on morphology, adhesion and proliferation of human osteoblast cells (hFOB) was investigated in vitro.
KW - Calcium silicate
KW - Reduced graphene oxide
KW - Electrophoretic deposition
KW - Coating
KW - Biocompatibility
U2 - 10.1016/j.jeurceramsoc.2015.08.025
DO - 10.1016/j.jeurceramsoc.2015.08.025
M3 - Journal article
SN - 0955-2219
VL - 36
SP - 319
EP - 332
JO - Journal of the European Ceramic Society
JF - Journal of the European Ceramic Society
ER -