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A Study to the Surface Characteristics of RF Magnetron Sputtered Bioglass - and Calcium Phosphate Coatings
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Novel Hydroxyapatite Coating on Alumina by Electrospraying
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Crystallization of Sputtered Hydroxyapatite Films by Hydrothermal Technique and Its Cytotoxicity
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Chemical and Morphological Properties of Calcium Phosphate Coatings Deposited Using the Electrostatic Spray Deposition (ESD) Technique
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Preparation of Bioactive Coatings on the Surface of Bioinert Polymers through an Innovative Auto-Catalytic Electroless Route
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Biphasic and Preferentially Oriented Microcrystalline Calcium Phosphate Coatings: In Vitro and In Vivo Studies
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The Effect of Microporous Structure on Bone-Bonding Ability of Titanium
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Preparation of Bioactive Coatings on the Surface of Bioinert Polymers through an Innovative Auto-Catalytic Electroless Route

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Abstract:

The aim of this research was to develop a new methodology to obtain bioactive coatings on bioinert and biodegradable polymers that are not intrinsically bioactive. In this study, three types of materials were used as substrates: (i) high molecular weight polyethylene (HMWPE) and two different types of starch based blends (ii) starch/ethylene vinyl alcohol blends, SEVA-C, and (iii)starch/cellulose acetate blends, SCA. These materials were obtained by injection moulding and by extrusion with blowing agents in order to obtain compact/porous 3D architectures. Three types of baths were developed in order to produce the newly proposed auto-catalytic Ca-P coatings: (i)alkaline, (ii) acid, and (iii) oxidant bath. The obtained results indicated that it was possible to coat the materials surfaces with calcium phosphate (Ca-P) layer with only 60 min of immersion in the different types of auto-catalytic solutions. These innovative auto-catalytic electroless route allows for the production of an adherent bioactive film on the polymeric surfaces. Furthermore, it was possible observe by SEM/EDS the clear bioactive nature of the Ca-P coatings after different immersion periods, in a simulated body fluid (SBF).

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Periodical:

Key Engineering Materials (Volumes 284-286)

Pages:

203-206

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.284-286.203

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Online since:

April 2005

Authors:

J. Miguel Oliveira, Isabel B. Leonor, Rui L. Reis

Keywords:

Apatite, Auto-Catalytic, Bioactivity, Biodegradable, Coating, Polymer

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© 2005 Trans Tech Publications Ltd. All Rights Reserved

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