Chitosan functionalization of titanium and Ti6Al4V alloy with chloroacetic acid as linker agent.
Chitosan
Covalent grafting
Functionalization
Ti6Al4V alloy
Titanium
Journal
Materials science & engineering. C, Materials for biological applications
ISSN: 1873-0191
Titre abrégé: Mater Sci Eng C Mater Biol Appl
Pays: Netherlands
ID NLM: 101484109
Informations de publication
Date de publication:
Jun 2019
Jun 2019
Historique:
received:
26
07
2018
revised:
25
01
2019
accepted:
15
02
2019
entrez:
21
3
2019
pubmed:
21
3
2019
medline:
12
7
2019
Statut:
ppublish
Résumé
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.
Identifiants
pubmed: 30889647
pii: S0928-4931(18)32214-8
doi: 10.1016/j.msec.2019.02.052
pii:
doi:
Substances chimiques
Acetates
0
Alloys
0
titanium alloy (TiAl6V4)
12743-70-3
chloroacetic acid
5GD84Y125G
Chitosan
9012-76-4
Titanium
D1JT611TNE
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
1133-1140Informations de copyright
Copyright © 2019 Elsevier B.V. All rights reserved.