Direct hydroxyapatite electrodeposition on superhydrophilic vertically aligned carbon nanotube films as scaffolds to bone tissue growth

• Grant number: 12/15773-2
• Support type: Scholarships in Brazil - Scientific Initiation
• Effective date (Start): October 01, 2012
• Effective date (End): March 31, 2013
• Field of knowledge: Engineering - Materials and Metallurgical Engineering - Nonmetallic Materials
• Principal researcher: Anderson de Oliveira Lobo
• Grantee: Mustafa Mohamed Zogbi Junior
• Home Institution: Instituto de Pesquisa e Desenvolvimento (IP&D). Universidade do Vale do Paraíba (UNIVAP). São José dos Campos , SP, Brazil
• Associated research grant: 11/17877-7 - Development of new polymeric scaffolds by electrospinning technique with incorporation of vertically aligned carbon nanotubes and nanohidroxyapatite for bone tissue regeneration, AP.JP

Abstract

Vertically aligned multi-walled carbon nanotubes (VACNT) are of particular interest in regenerative medicine. Template-induced nanohydroxyapatite (HAp) has broad prospects in applied fields of bone regenerative medicine. Thus, it becomes very attractive a combination of these two excellent materials to bone tissue engineering applications. VACANT films were produced as a thin film, using a microwave plasma chamber at 2.45GHz on Ti substrates (10mmx10mmx1mm). Superhydrophilic VACNT (VACNT-O2) films were obtained by the incorporation of oxygen-containing groups using a pulsed-direct current plasma reactor with pure oxygen. The electrodeposition of the nHAp crystals on the VACNT-O2 films will be performed using Ca(NO3)2.4.H2O (2,5 mM) + NH4H2PO4 (1,5 mM). The electrochemical measurements will be performed using a three-electrode cell coupled to an Autolab PGSTAT128N equipment. VACNT-O2 films will be used as working electrodes and the geometric area in contact with the electrolytic solution. A platinum coil wire served as an auxiliary electrode, and an Ag/AgCl electrode will be used as a reference electrode. The electrodeposition parameters will be variable with different data, such as electrolyte temperature (23-90ºC); Time (20-120 minutes); pH (4,2-7,4). Field emission gun, micro X-ray fluorescence spectrometer by energy-dispersive, X-ray diFfractogram, Raman spectroscopy will be used for characterization. (AU).

Scientific publications

(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)

ZOGBI, JR., M. M.; SAITO, E.; ZANIN, H.; MARCIANO, F. R.; LOBO, A. O. Hydrothermal-electrochemical synthesis of nano-hydroxyapatite crystals on superhydrophilic vertically aligned carbon nanotubes. Materials Letters, v. 132, p. 70-74, OCT 1 2014. Web of Science Citations: 12.