Electrophoretic deposition of zein coatings

Bioactive and Antibacterial Coatings Based on Zein/Bioactive Glass Composites by Electrophoretic Deposition

“…Coatings 2018, 8,27 The cathodic deposition of zein is assumed to be similar to that of chitosan [27,33] and it may take place as described next. The protonation of amine groups of zein occurs in the presence of hydronium ions and, according to reaction (1), it results in ammonium ions and water:…”

“…Coatings 2018, 8,27 Figure 3 confirms the presence of zein molecules in all coatings indicated by three characteristic vibrational bands, namely: amid I (1650 cm −1 ); amid II (1510 cm −1 ); and amid III (1236 cm −1 ), which correspond to C=O stretching, C-N stretching, and N-H in plane deformation, respectively [36,37]. Further characteristic peaks of zein at 3340 cm −1 and 2930 cm −1 appear and are attributable to O-H stretching and C-H stretching, respectively.…”

“…Coatings 2018, 8,27 sufficient material to cover the steel substrate (Figure 7c,d), in contrast to that of the Cu-free BG system. Moreover, the small number of bioactive glass particles observed on both types of coatings indicates that some particles may have been released in the SBF solution after degradation of zein or have dissolved to form HA.…”

“…During EPD, charged particles or molecules in suspension migrate to the oppositely charged electrode (substrate) where they are then deposited. There is very limited previous work reporting the EPD of zein [27][28][29], and there has been no previous investigation with regards to EPD of a zein/BG composite. This work presents for the first time the fabrication of zein/BG composite coatings formed through EPD.…”

Fabrication and characterization of zein/bioactive glass deposited on pretreated magnesium via electrophoretic deposition

“…The high degradation rate of Mg implant can cause premature mechanical failure of implants before the tissues completely heal and gain their mechanical strength 4 . To slow down this degradation so that it matches the healing rate of tissues, the magnesium substrates can be coated with various biocompatible materials and their combinations, for example, chitosan, 10,11 zein, 12‐14 gelatin, 15,16 hydroxyapatite (HA), 17‐19 and bioactive glasses 15,20‐24 . Much work has been done on the composite coatings, and their application can significantly promote bone growth, protect against corrosion, and increase the functionality and durability of the implants 25 …”