Alginate Biopolymer Coatings Obtained by Electrophoretic Deposition on Ti15Mo Alloy

Abstract

In this work, the electrophoretic deposition method has been developed for the fabrication of bioactive alginate coatings on the surface of Ti15Mo implant alloy. Thin ZnO lm was deposited cataphoretically as the interlayer prior to anaphoretic deposition of alginate (Alg) which was performed from aqueous solution containing 1 g dmof NaAlg at room temperature. The deposition voltage and time varied in the range 2050 V and 30120 min, respectively. The microstructure of Alg coatings was studied by scanning electron microscope, and the surface roughness was analysed using atomic force microscopy. Structure was studied by grazing incidence X-ray diraction. Chemical composition and functional group were examined using energy dispersive spectrometry and attenuated total reectance Fourier transform infrared spectroscopy methods, respectively. It was found that controlling the deposition conditions it is possible to obtain amorphous Alg coatings of variable thickness and porosity. Mechanism of electrophoretic deposition of bioactive Alg coatings on the Ti15Mo alloy surface was discussed.

ANN prediction of corrosion behaviour of uncoated and biopolymers coated cp-Titanium substrates

“…[27] CS is a nontoxic polymer which assists in wound healing and promotes osteogenesis [28]. CS is used for biomedical applications in many forms, such as scaffolds [29] , [30] , [31] and as hydrogels [32] , [33] , [34] Sodium Alginate (SA) is another natural biodegradable polysaccharide [35] , [36], exhibiting biocompatibility, bio-functionality, non-toxicity and low cost [35]. SA, as a component of multilayer assembly, is being coated on a number of substrates [37] , [38] , [39].…”

Electrophoretic deposition of chitosan coatings on the Ti15Mo biomedical alloy from a citric acid solution

“…13392 | RSC Adv., 2020, 10,[13386][13387][13388][13389][13390][13391][13392][13393] This journal is © The Royal Society of Chemistry 2020…”

“…In order to increase the biocompatibility of implants the oxide layers, polymeric or ceramic coatings are applied on their surface. [6][7][8][9][10][11][12] They increase the corrosion resistance of the implant and may also be a matrix with embedded tissue-forming, antibacterial and/or anticoagulant substances. 13 An interesting technique for obtaining coatings for medical use is the electrophoretic deposition (EPD) method.…”

Impact of Surface Topography, Chemistry and Properties on the Adhesion of Sodium Alginate Coatings Electrophoretically Deposited on Titanium Biomaterials

“…It is a biodegradable, high biocompatible, low cost and non-toxic anionic polymer, commonly extracted from brown algae. [9][10][11][12] This polymer is widely used for many medical applications, for instance, drug delivery, nerve tissue repair or wound dressing [13][14][15][16] and for biomedical coatings. [17][18][19] A beneficial technique for the deposition of alginate coatings on conducting materials is electrophoretic deposition (EPD).…”

“…[17][18][19] A beneficial technique for the deposition of alginate coatings on conducting materials is electrophoretic deposition (EPD). [15,17,18,[20][21][22] In this process, charged particles dispersed in the dispersion phase move to a conductive substrate of opposite charge under the electric field to obtain a coating. [17,21,23] EPD has many advantages, such as room temperature processing, a short deposition time and uncomplicated control of process parameters.…”