Por favor, use este identificador para citar o enlazar este ítem: http://repositorio.ufc.br/handle/riufc/29040
Tipo: Artigo de Periódico
Título : Chemical interaction mechanism of 10-MDP with zirconia
Autor : Nagaoka, Noriyuki
Yoshihara, Kumiko
Feitosa, Victor Pinheiro
Tamada, Yoshiyuki
Irie, Masao
Yoshida, Yasuhiro
Meerbeek, Bart Van
Hayakawa, Satoshi
Palabras clave : Zircônio;Zirconium;Espectroscopia de Ressonância Magnética;Magnetic Resonance Spectroscopy
Fecha de publicación : mar-2017
Editorial : Scientific Reports
Citación : NAGAOKA, N. et al. Chemical interaction mechanism of 10-MDP with zirconia. Scientific Reports, v. 7, p. 1-7, mar. 2017.
Abstract: Currently, the functional monomer 10-methacryloyloxy-decyl-dihydrogen-phosphate (10-MDP) was documented to chemically bond to zirconia ceramics. However, little research has been conducted to unravel the underlying mechanisms. This study aimed to assess the chemical interaction and to demonstrate the mechanisms of coordination between 10-MDP and zirconium oxide using 1 H and 31 P magic angle spinning (MAS) nuclear magnetic resonance (NMR) and two dimensional (2D) 1 H → 31 P heteronuclear correlation (HETCOR) NMR. In addition, shear bond-strength (SBS) tests were conducted to determine the effect of 10-MDP concentration on the bonding effectiveness to zirconia. These SBS tests revealed a 10-MDP concentration-dependent SBS with a minimum of 1-ppb 10-MDP needed. 31 P-NMR revealed that one P-OH non-deprotonated of the PO 3 H 2 group from 10-MDP chemically bonded strongly to zirconia. 1 H- 31 P HETCOR NMR indicated that the 10-MDP monomer can be adsorbed onto the zirconia particles by hydrogen bonding between the P = O and Zr-OH groups or via ionic interactions between partially positive Zr and deprotonated 10-MDP (P-O − ). The combination of 1 H NMR and 2D 1 H- 31 P HETCOR NMR enabled to describe the different chemical states of the 10-MDP bonds with zirconia; they not only revealed ionic but also hydrogen bonding between 10-MDP and zirconia.
URI : http://www.repositorio.ufc.br/handle/riufc/29040
ISSN : 2045-2322 (On line)
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