Deposition of poly(methyl methacrylate) and composites containing bioceramics and bioglass by dip coating using isopropanol-water co-solvent

•Poly(methyl methacrylate) (PMMA) coatings were obtained by a dip coating method.•Isopropanol-water co-solvent was used and eliminated the use of toxic solvents.•PMMA coatings provided corrosion protection of stainless steel.•Composite coatings were obtained containing bioceramics and bioglass in PM...

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Bibliographic Details
Published in:Progress in organic coatings 2020-11, Vol.148, p.105883, Article 105883
Main Authors: Li, Xuelin, Zhitomirsky, Igor
Format: Article
Language:English
Subjects:
Alumina
Aluminum oxide
Bioceramics
Biocompatibility
Bioglass
Biomedical materials
Coating
Corrosion prevention
Deposition
Dispersants
Hydroxyapatite
Immersion coating
Isopropanol
Poly(methyl methacrylate)
Polymethyl methacrylate
Protective coatings
Solvents
Stainless steel
Stainless steels
Surgical implants
Titania
Titanium dioxide
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Summary:•Poly(methyl methacrylate) (PMMA) coatings were obtained by a dip coating method.•Isopropanol-water co-solvent was used and eliminated the use of toxic solvents.•PMMA coatings provided corrosion protection of stainless steel.•Composite coatings were obtained containing bioceramics and bioglass in PMMA.•Composite coatings provided enhanced corrosion protection. A new dip coating method has been developed for the fabrication of poly(methyl methacrylate) (PMMA) coatings on stainless steel. Despite the insolubility of PMMA in individual solvents, such as water and alcohol, concentrated solutions of high molecular mass PMMA were obtained in an isopropanol-water mixture. The new dip coating method offers processing advantages of the use of isopropanol-water co-solvent instead of toxic organic solvents. It was been demonstrated that adherent films can be obtained by this method from solutions of high molecular mass PMMA. Another important finding was the feasibility of deposition of composite coatings, containing bioceramics, such as TiO2, Al2O3, hydroxyapatite, and bioglass in the PMMA matrix. PMMA acted as a dispersant or co-dispersant for deposition or co-deposition of the inorganic particles. Potentiodynamic and impedance spectroscopy studies showed that PMMA coatings provided corrosion protection of stainless steel in 3 % NaCl solution. Composite PMMA-TiO2, PMMA-Al2O3, PMMA-hydroxyapatite, PMMA-bioglass and PMMA-hydroxyapatite-bioglass coatings provided enhanced corrosion protection, compared to pure PMMA coatings. The obtained composite coatings are promising for applications in biomedical implants.
ISSN:0300-9440
1873-331X
DOI:10.1016/j.porgcoat.2020.105883