Phosphonate-hydroxyapatite hybrid compounds prepared by hydrothermal method (Articolo in rivista)

Type
Label
  • Phosphonate-hydroxyapatite hybrid compounds prepared by hydrothermal method (Articolo in rivista) (literal)
Anno
  • 2010-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1016/j.apsusc.2010.08.021 (literal)
Alternative label
  • H. Agougui (1); A. Aissa (1); S. Maggi (2); M. Debbabi (1) (2010)
    Phosphonate-hydroxyapatite hybrid compounds prepared by hydrothermal method
    in Applied surface science; Elsevier BV, Amsterdam (Paesi Bassi)
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • H. Agougui (1); A. Aissa (1); S. Maggi (2); M. Debbabi (1) (literal)
Pagina inizio
  • 1377 (literal)
Pagina fine
  • 1382 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#url
  • http://www.sciencedirect.com/science/article/pii/S0169433210010858 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 257 (literal)
Rivista
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  • 6 (literal)
Note
  • Scopu (literal)
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • (1) Lab. de Physico-Chimie des Materiaux, Fac. des Sciences de Monastir, Monastir 5019, Tunisie (2) CNR-IC, Istituto di Cristallografia, Via G. Amendola 122/O, I-70126 Bari, Italy (literal)
Titolo
  • Phosphonate-hydroxyapatite hybrid compounds prepared by hydrothermal method (literal)
Abstract
  • Calcium hydroxyapatite (CaHAp) was prepared in the presence of two alkylphosphonates, the tert-butyl phosphonic acid TBPOH and the 2-carboxyletylphosphonic acid 2-CEPA, by hydrothermal method at 120 degrees C for 15 h. The modification of hydroxyapatite by grafting organic moieties is confirmed by IR and NMR MAS ((1)H and (31)P) spectroscopy and chemical analysis. X-ray powder diffraction patterns show that the incorporation of organic moieties induces a significant loss of the material crystallinity and a clear increase of the unit cell lattice parameter a as function of 2-CEPA grafting rate. The specific surface area (SSA) increases with increasing phosphonate amount especially for 2-CEPA. All techniques show the lower reactivity of TBPOH due to the steric effects of tert-butyl, whereas the 2-CEPA with a linear chain and double acidic functions is more reactive and can replace the OH(-) groups of the apatitic structure. (literal)
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