Investigation Some Characteristics of Biocomposites Coating for Biomedical Implants

Abstract:

The surface has a vital function in the tissue's response to the presence of foreign material in the field of body implants. Surface modification with coatings can be adjusted to provide the highest service performance at the lowest cost. Coatings can increase corrosion resistance by reducing metal ion and corrosion product migration in the body. We fabricated polymer based bio-composite coatings by blending chitosan (Chi), alginate (Alg) and nanoparticles ((TiO₂, Nb₂O₅) by dip coating onto a 316L stainless steel substrate. The coatings’ surface morphology and phases were studied using FESEM and FTIR analysis. The wettability behavior of the coated samples was also studied by investigating their contact wetting attributes. The antibacterial activity of the functionalized coatings was determined too. The FTIR results showed that the blending of Chi-Alg and nanoparticles was excellent, and no obvious differences in the spectra or any changes in the structures of the polymer matrices were observed. The SEM results demonstrated that the coating layers were uniform, homogeneous, and crack-free on the 316L Stianless steel substrate when using TiO₂-Nb₂O₅ nano particles. The contact angle results showed the highly hydrophilic properties of the pure chitosan-alginate blend. As well, coatings containing nano particles showed the same antibacterial effect of chitosan-alginate blend coating.

• Periodical: Key Engineering Materials (Volume 936)
• Pages: 3-11
• DOI: https://doi.org/10.4028/p-nt9b2f
• Online since: December 2022
• Authors: Qahtan Adnan Hamad, Shereen A. Abdulrahman*, Rasha Abdul-Hassan Issa
• Keywords: Alginate, Bio Composite, Chitosan, Coating, Implant, Stainless Steel 316L

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