Resorbable polymer coatings modified with tricalcium phosphate and zinc oxide for magnesium alloy wires
Journal Title: Engineering of Biomaterials / Inżynieria Biomateriałów - Year 2016, Vol 19, Issue 136
Abstract
Magnesium and its alloys can be a promising alternative for traditionally used metallic biomaterials due to their: biocompatibility, biodegradability, osteoconductivity, antibacterial activity, and resemblance of density and Young’s modulus to the natural bone. Rapid corrosion, Mg alloys main disadvantage, causes hydrogen accumulation, harmful pH level increase in surrounding tissues, and premature loss of mechanical parameters. In order to solve those issues, scientists select appropriate alloying elements and apply different surface treatments or coatings. This research considers application of resorbable polymers as coating materials for magnesium alloy wires. Samples were dip-coated with various concentration polylactide (PLA) and polycaprolactone (PCL) solutions. Immersion tests were conducted for 7 weeks in phosphate buffered saline and distilled water; pH and ionic conductivity changes, and release of Mg2+ ions were monitored. We show the influence of polymer solution concentration on the coating quality and effectiveness of anticorrosive protection, as well as superior parameters of polycaprolactone. In the second part of the study, selected coating was modified with tricalcium phosphate (TCP) and zinc oxide (ZnO), that were incorporated into the polymer matrix. Mechanical studies revealed that after modification with those two types of particles Young’s modulus increased, while tensile strength and elasticity of the foils decreased, however it should not affect the effectiveness of the coating. SEM and EDS analysis confirmed potential bioactivity of investigated materials.
Authors and Affiliations
A. Morawska-Chochół, P. Domalik-Pyzik, O. Sikora, W. Reczyński, M. Rzewuska, J. Chłopek
Keywords
Related Articles
- EP ID EP559717
- DOI -
- Views 70
- Downloads 0
Badanie histerezy mechanicznej ścięgien wieprzowych
Ścięgna mogą być czasowo lub trwale uszkodzone w warunkach nadmiernego obciążenia lub obciążenia przyłożonego z dużą szybkością. Z punktu widzenia decyzji chirurga istotnym jest przewidywanie intensywności uszkodzeń ścię...
Acrylic composite materials modified with bee pollen for biomedical application
The aim of this paper is to present the influence of bee pollen on the physicochemical and in vitro properties of poly(acrylic acid) (PAA) hydrogel composites enriched with hydroxyapatite and modified with bee pollen as...
Micro-CT analysis of molar teeth restored by combining conventional and glass fibre reinforced composites
The loss of mineralized tissues of the tooth as a result of pathogenic processes and treatment is the principal factor leading to tooth weakening. Most frequently, the cracks occur on the filling surface as a result of r...
A tubular polycaprolactone/hyaluronic acid scaffolds for nasal cartilage tissue engineering
In this preliminary study, 3D nanofibrous porous scaffolds in the form of spiral tubes for future application as nasal cartilages implants were fabricated by combining polycaprolactone electrospun fibers with drug modifi...
Mechanical characterization of multifunctional resorbable composite plate for osteosynthesis
The article presents the mechanical properties of prototype multifunctional four-hole, I-shaped plate made of resorbable composite and used for osteosynthesis. Multiple tests were conducted on ready-to-use implants and r...