Some preliminary studied on polyelectrolyte and rheologial properties of sodium 2,3-dicarboxycellulose
1995
Varma, A.J. | Chavan, V.B.
Sodium 2,3-dicarboxycellulose (NaDCC) was synthesised, and its polyelectrolyte behaviour was compared to a commercial sample of sodium carboxymethyl cellulose (NaCMC), and to sodium alginate data from literature. NaDCC showed typical polyelectrolyte properties, such as viscosity and flocculation of multivalent salts. In spite of very low viscosity of aqueous NaDCC solution due to very low molecular weight, the flocculation of Al2(SO4)3 from aqueous solutions using NaDCC was quite comparable to NaCMC. Preliminary studies on the rheology of NaDCC were also carried out. The rheological properties of NaDCC were in contrast to that of NaCMC reported in literature. This was because of the vast difference in their molecular weights, which resulted in their rheograms being investigated in very different shear rate regions. The NaDCC solutions showed slight shear thickening behaviour.
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