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Chemistry for Sustainable Development

2015 year, number 5

Properties of Composite Materials Based on Chitosan and Hydroxyapatite

E. V. VOLOSKOVA1,2, V. A. POLUBOYAROV1,2, F. K. GORBUNOV1,2 and E. I. AKOPOVA2
1Institute of Solid State Chemistry and Mechanochemistry, Siberian Branch of the Russian Academy of Sciences, Ul. Kutateladze 18, Novosibirsk 630128 (Russia)
2Novosibirsk Technological Institute, Krasny Prospekt, 35, Novosibirsk 630099 (Russia)
Keywords: хитозан, гидроксиапатит, композиционный материал, получение, механические свойства, chitosan, hydroxyapatite, composite material, preparation, mechanical properties

Abstract

Composite materials based on chitosan with molecular mass 190 000 a.m.u. and hydroxyapatite with acerage particle size 20-30 nm with different filling degree were obtained. The optimal amount of hydroxyapatite (0.03 and 1 mass %) for modification providing an increase in film strength by 20 % was determined. Periodic change of the size of polymer grains during modification was revealed. The effect of such parameters as components ratio, compacting pressure and mold humidity on highly filled composite materials obtained by pressing was studied. The density, rupture and tensile strength, compression strength and apparent density of the obtained samples were determined.