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Oxana A. Soboleva
Influence of polyvinyl
alcohol on the stability of aqueous dispersions of nanodiamonds
Abstract
Abstract. The
stability of aqueous dispersions of detonation nanodiamonds (ND) in the
presence of polyvinyl alcohol (PVA) has been studied. It has been established
that PVA additives with a concentration above 0.1 wt.% cause the formation of
aggregates. To increase the stability of ND dispersions, it was proposed to
add a stabilizer, an anionic surfactant sodium dodecyl sulfate (SDS), into the
system. As a result of the simultaneous action of the SDS-PVA mixture, the
aggregation stability of aqueous dispersions of ND increases markedly; the
particle size in the dispersions does not change for several days.
Key words:
nanodiamonds, polyvinyl alcohol, stability of dispersed systems
Copyright (C) Chemistry Dept., Moscow State University, 2002
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