Record Details

Studies on characteristics and corrosion behaviour of chitosan/eudragit RS100 bilayer film coated Ti-6Al-4V

NOPR - NISCAIR Online Periodicals Repository

View Archive Info
 
 
Field Value
 
Title Studies on characteristics and corrosion behaviour of chitosan/eudragit RS100 bilayer film coated Ti-6Al-4V
 
Creator Shreevani, K
Narayana, B
Sarojini, B. K.
Ganesha, A
Praveen, B M
Devendra, Bharath K
G, Krishnakumar
C H, Sushmitha
 
Subject Dental implant
Artificial saliva
Scratch test
Potentiodynamic polarization
Critical load
 
Description 570-578
In the present study, implant material Ti-6Al-4V has been coated with eudragit (EU) and chitosan (CH) polymers to
enhance surface properties. The deposition of polymer coating has covered the surface cracks to a significant level and the
fact has been confirmed by FE-SEM coupled with EDAX wherein the atomic percentage of Ti (99.90%) in non-coated
surface has been decreased markedly to 0.42% after coating. Scratch resistance and adhesion power of bilayer coating has
been increased as indicated by the higher critical loads Lc1 (16.71 N), Lc2 (17.56 N), Lc3 (17.96 N) when a progressive load
of 1 N to 20 N is applied over the coated surface. Further, Electrochemical impedance spectroscopy (EIS) and
potentiodynamic-polarization studies have shown that the value of polarization resistance is inversely proportional to
the corrosion rate. Thus decrease in the corrosion rate from 107.5×10-2 (mm year-1) for the non-coated alloy to
2.88×10-2 (mm year-1) for CH/EU coating demonstrated that coating enhanced the corrosion resistance of the alloy in the
physiological condition. The in vitro antibacterial test conducted against S. aureus, B. subtilis, P. vulgaris and
P. auregenosa has shown a significant inhibition zone of 9 mm, 6 mm, 7 mm and 10 mm, respectively, thus indicating the
possible application of the polymeric coating material on the dental implants.
 
Date 2023-07-11T04:58:17Z
2023-07-11T04:58:17Z
2023-07
 
Type Article
 
Identifier 0975-0991 (Online); 0971-457X (Print)
http://nopr.niscpr.res.in/handle/123456789/62277
https://doi.org/10.56042/ijct.v30i4.69328
 
Language en
 
Publisher NIScPR-CSIR,India
 
Source IJCT Vol.30(4) [July 2023]