Natural Coatings and Surface Modifications on Magnesium Alloys for Biomedical Applications

Magnesium (Mg) alloys have great potential in biomedical applications due to their incomparable properties regarding other metals, such as stainless steels, Co-Cr alloys, and titanium (Ti) alloys. However, when Mg engages with body fluids, its degradation rate increases, inhibiting the complete heal...

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Bibliographic Details
Published in:Polymers 2022-12, Vol.14 (23), p.5297
Main Authors: Cuartas-Marulanda, Diego, Forero Cardozo, Laura, Restrepo-Osorio, Adriana, Fernández-Morales, Patricia
Format: Article
Language:English
Subjects:
Alloys
Biocompatibility
Biodegradability
Biomedical engineering
Biomedical materials
Biopolymers
Body fluids
Bones
Cell adhesion
Ceramic glazes
Chromium
Coatings
Cobalt base alloys
Corrosion
Corrosion and anti-corrosives
Corrosion cell
Corrosion resistance
Degradation
Fractures
Human body
Hydrogen
Magnesium
Magnesium alloys
Magnesium base alloys
Mechanical properties
Natural polymers
Orthopedics
Physiology
Polymer coatings
Polymers
Protective coatings
Review
Specialty metals industry
Stainless steels
Steel, Stainless
Stem cells
Technology application
Titanium
Transplants & implants
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Summary:Magnesium (Mg) alloys have great potential in biomedical applications due to their incomparable properties regarding other metals, such as stainless steels, Co-Cr alloys, and titanium (Ti) alloys. However, when Mg engages with body fluids, its degradation rate increases, inhibiting the complete healing of bone tissue. For this reason, it has been necessary to implement protective coatings to control the rate of degradation. This review focuses on natural biopolymer coatings used on Mg alloys for resorbable biomedical applications, as well as some modification techniques implemented before applying natural polymer coatings to improve their performance. Issues such as improving the corrosion resistance, cell adhesion, proliferation, and biodegradability of natural biopolymers are discussed through their basic comparison with inorganic-type coatings. Emphasis is placed on the expected biological behavior of each natural polymer described, to provide basic information as a reference on this topic.
ISSN:2073-4360
2073-4360
DOI:10.3390/polym14235297