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Chitosan functionalization of titanium and Ti6Al4V alloy with chloroacetic acid as linker agent
Roma Tre Univ, Italy.
Roma Tre Univ, Italy.
Roma Tre Univ, Italy.
Linköping University, Department of Physics, Chemistry and Biology, Surface Physics and Chemistry. Linköping University, Faculty of Science & Engineering.ORCID iD: 0000-0001-9879-3915
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2019 (English)In: Materials science & engineering. C, biomimetic materials, sensors and systems, ISSN 0928-4931, E-ISSN 1873-0191, Vol. 99, p. 1133-1140Article in journal (Refereed) Published
Abstract [en]

In this work, a new covalent grafting of chitosan on titanium and Ti6Al4V alloy surfaces is reported using chloroacetic acid as linker agent. Good results were obtained both on titanium and on Ti6Al4V alloy. The effect of the surface acid pretreatments on the subsequent functionalization with chitosan is evaluated. The morphological aspect of acid etched metal surfaces before chitosan grafting has been characterized by scanning electron microscopy (SEM). The presence of carboxylic groups on metal surfaces and then the efficiency of chitosan covalent immobilization were detected by Fourier transformed infrared-Attenuated Total Reflectance (FTIR-ATR) and X-Ray photoelectron spectroscopy (XPS). Cyclic voltammetry tests, using the functionalized titanium and Ti6Al4V samples as electrodes, were conducted in different aqueous solutions, to detect the presence of the homogeneous overlayer of chitosan on the surface, and to evaluate the importance of the carboxyl groups as linker agent.

Place, publisher, year, edition, pages
ELSEVIER SCIENCE BV , 2019. Vol. 99, p. 1133-1140
Keywords [en]
Titanium; Ti6Al4V alloy; Functionalization; Chitosan; Covalent grafting
National Category
Materials Chemistry
Identifiers
URN: urn:nbn:se:liu:diva-156894DOI: 10.1016/j.msec.2019.02.052ISI: 000463121200109PubMedID: 30889647OAI: oai:DiVA.org:liu-156894DiVA, id: diva2:1318828
Note

Funding Agencies|LIME laboratory of Roma Tre University

Available from: 2019-05-28 Created: 2019-05-28 Last updated: 2019-05-28

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  • apa
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  • de-DE
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