Russian Mineralogical Society
XI RMS General Meeting “Modern mineralogy: from theory to practice” combined with the Fedorov Session 2010
Organo-mineral composite materials on the basis of cellulose by Acetobacter xylinum and calcium phosphates

RMS-DPI code:  2010-1-134-0
Scientific session:  M3. Applied mineralogy.
Author listing:  Romanov D.P., Baklagina Yu.G., Lukasheva N.V., Khripunov A.K., Tkachenko A.A., Lavrentyev V.K., Klechkovskaya V.V., Arkharova N.A., Tolmachev D.A.
Principal author:  Romanov Dmitry Pavlovich
Language:  Russian
Abstract - Summary 
(short description):
Biocompatible inorganic-organic composite material for medical application as bone precursor is prepared through aggregation in aqueous suspensions of synthetic calcium phosphate and Acetobacter xylinum cellulose. The mineral component consists of two crystalline phases, hydrohyapatite Ña5(PO4)3(OH) and whitlocite Ña2.6Mg0.4(PO4) which are nanosized platelike crystals. The crystallites of hydrohyapatite and whitlokite are adsorbed on the surfaces of nanofibrilar cellulose ribbons. Whitlokite nanocrystals are predominantly deposited on them. Computer simulations of the structure of the inter-phase regions demonstrate that the formation of the hydrogen bonds between the surfaces of the calcium phosphates and cellulose gives the main contribution to the energy of the interaction of the mineral and organic components The whitlocite–cellulose interaction is more preferable in energy.

Key words: inorganic-organic biocomposite , calcium phosphates, cellulose Acetobacter xylinum, nanoparticles
Date of presentation:  12/10/2010
Time of presentation:  17:00
Presentation Place:  Mining University, Hall 1164
RMS-DPI code:  2010-1-134-0
Proceeedings volume 
in the RMS catalogue:
Modern mineralogy: from theory to practice
Pages:  373-375
File of proceedings 
 337 K
Status:  printed
Accepted:  14/07/2010
Published on-line:  21/11/2010
Permanent address of publication:
Contact author(s):  Romanov, Dmitry Pavlovich

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