Hydroxyapatite nano sol prepared via a mechanochemical route

S. Nakamura, T. Isobe, M. Senna

Research output: Contribution to journalArticle

38 Citations (Scopus)

Abstract

Well-dispersed sol with crystalline hydroxyapatite (HAp) was obtained directly by milling a mixture comprising Ca(OH)2, an aqueous solution of H3PO4 and a dispersant, an ammonium salt of polyacrylic acid. The average crystallite size of HAp was below 20 nm. Ca/P molar ratio of the product was 1.51 ± 0.04, i.e. Ca deficient from stoichiometric HAp. Minimum apparent viscosity was attained at a dispersant concentration 0.92wt% of sol. An as-milled sol was diluted by a factor 10-2.61 solid wt% to give a Newtonian fluid of 2 mPas. From the diluted sol, we obtained a few μm thick dense film of HAp by dip coating on the slide glass precoated by chitosan.

Original languageEnglish
Pages (from-to)57-61
Number of pages5
JournalJournal of Nanoparticle Research
Volume3
Issue number1
DOIs
Publication statusPublished - 2001

Fingerprint

Hydroxyapatite
Newtonian fluids
Polymethyl Methacrylate
Durapatite
Sols
chutes
coating
routes
viscosity
aqueous solutions
salts
acids
carbopol 940
glass
products
Chitosan
Ammonium
Newtonian Fluid
Crystallite size
Ammonium Compounds

Keywords

  • Gelation
  • Hydroxyapatite
  • Mechanochemical reaction
  • Nano sol
  • Rheological properties

ASJC Scopus subject areas

  • Chemistry(all)
  • Materials Science(all)

Cite this

Hydroxyapatite nano sol prepared via a mechanochemical route. / Nakamura, S.; Isobe, T.; Senna, M.

In: Journal of Nanoparticle Research, Vol. 3, No. 1, 2001, p. 57-61.

Research output: Contribution to journalArticle

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