Biocompatible ceramic-biopolymer coatings obtained by electrophoretic deposition on electron beam structured titanium alloy surfaces

C. Ramskogler*, L. Cordero, F. Warchomicka, A. R. Boccaccini, C. Sommitsch

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

An area of major interest in biomedical engineering is currently the development of improved materials for medical implants. Research efforts are being focused on the investigation of surface modification methods for metallic prostheses due to the fundamental bioinert character of these materials and the possible ion release from their surfaces, which could potentially induce the interfacial loosening of devices after implantation. Electron beam (EB) structuring is a novel technique to control the surface topography in metals. Electrophoretic deposition (EPD) offers the feasibility to deposit at room temperature a variety of materials on conductive substrates from colloidal suspensions under electric fields. In this work single layers of chitosan composite coatings containing titania nanoparticles (n-TiO 2 ) were deposit by EPD on electron beam (EB) structured Ti6Al4V titanium alloy. Surface structures were designed following different criteria in order to develop specific topography on the Ti6Al4V substrate. n-TiO 2 particles were used as a model particle in order to demonstrate the versatility of the proposed technique for achieving homogenous chitosan based coatings on structured surfaces. A linear relation between EPD time and deposition yield on different patterned Ti6Al4V surfaces was determined under constant voltage conditions, obtaining homogeneous EPD coatings which replicate the 3D structure (pattern) of the substrate surface. The present results show that a combination of both techniques can be considered a promising surface modification approach for metallic implants, which should lead to improved interaction between the implant surface and the biological environment for orthopaedic applications.

Original languageEnglish
Title of host publicationTHERMEC 2016
EditorsMihail Ionescu, Brajendra Mishra, Ernst Kozeschnik, Christof Sommitsch, T. Chandra, Brajendra Mishra
PublisherTrans Tech Publications Ltd.
Pages1552-1557
Number of pages6
ISBN (Print)9783035711295
DOIs
Publication statusPublished - 1 Jan 2017
Event9th International Conference on Processing and Manufacturing of Advanced Materials, THERMEC 2016 - Graz, Austria
Duration: 29 May 20163 Jun 2016

Publication series

NameMaterials Science Forum
Volume879
ISSN (Print)0255-5476

Conference

Conference9th International Conference on Processing and Manufacturing of Advanced Materials, THERMEC 2016
CountryAustria
CityGraz
Period29/05/163/06/16

Keywords

  • Electron beam structuring
  • Electrophoretic deposition
  • N-TiO2/chitosan
  • Ti6Al4V

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

Fields of Expertise

  • Advanced Materials Science
  • Human- & Biotechnology

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