%0 Journal Article
%T Hydroxyapatite-phosphonoformic acid hybrid compounds prepared by hydrothermal method
%+ Laboratoire Charles Coulomb (L2C)
%A Turki, Thouraya
%A Othmani, Masseoud
%A Bantignies, Jean-Louis
%A Bouzouita, Khaled
%< avec comité de lecture
%Z L2C:14-309
%@ 0169-4332
%J Applied Surface Science
%I Elsevier
%V 290
%P 327-331
%8 2014-01-30
%D 2014
%R 10.1016/j.apsusc.2013.11.076
%K Hydroxyapatite
%K Phosphonoformic acid
%K Functionnalization
%K Hydrothermal method
%Z Chemical Sciences/Material chemistryJournal articles
%X Hydroxyapatites were prepared in the presence of different amounts of phosphonoformic acid (PFA) via the hydrothermal method. The obtained powders were characterized through chemical analysis, XRD, IR, 31P MAS-NMR, TEM, and TG-TDA. The XRD showed that the PFA did not affect the apatite composition. Indeed, only a reduction of the crystallite size was noted. After grafting of PFA, the IR spectroscopy revealed the appearance of new bands belonging to HPO42− and carboxylate groups of the apatite and organic moiety, respectively. Moreover, the 31P MAS-NMR spectra exhibited a peak with a low intensity assigned to the terminal phosphonate group of the organic moiety in addition to that of the apatite. Based on these results, a reaction mechanism involving the surface hydroxyl groups (triple bond; length of mdashCasingle bondOH) of the apatite and the carboxyl group of the acid was proposed.
%G English
%L hal-01202091
%U https://hal.science/hal-01202091
%~ CNRS
%~ L2C
%~ MIPS
%~ UNIV-MONTPELLIER
%~ UM-2015-2021