Study of the hydrothermal transformation of wood-derived calcium carbonate into 3D hierarchically organized hydroxyapatite

Andrea Ruffini, Simone Sprio, Anna Tampieri

Research output: Contribution to journalArticle

19 Scopus citations

Abstract

The aim of this work was to achieve a procedure that could totally transform calcium carbonate template derived from wood (Calamus Manna or rattan) into a biomimetic hydroxyapatite scaffold, yet preserving its original hierarchical architecture.The biomorphic conversion was investigated in depth under hydrothermal treatment at low temperatures and with different phosphate solutions. A kinetic approach was used to follow the rates and mechanisms of transformation. Diffusion controlled process and nuclei-one dimensional growth of hydroxyapatite were defined. The results showed the successful transformation, which was accomplished after 96. h in basic pH conditions at temperatures ranging between 20 and 60 °C.The resulting scaffold preserved the initial structure of rattan, featuring ideal pore size and interconnectivity for a spongy bone substitute. In the future, these biomorphic processes on natural woods could be useful for the development of biomedical devices for long bone substitute, having high biomechanical performance and regenerative properties.

Original languageEnglish (US)
Pages (from-to)150-158
Number of pages9
JournalChemical Engineering Journal
Volume217
DOIs
StatePublished - Feb 1 2013

Keywords

  • Biomorphic transformation
  • Hydrothermal
  • Hydroxyapatite
  • Phosphation
  • Scaffold
  • Wood

ASJC Scopus subject areas

  • Chemical Engineering(all)
  • Chemistry(all)
  • Industrial and Manufacturing Engineering
  • Environmental Chemistry

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