Effects of Various Phosphates on the Viscosity of Aqueous Sodium Carboxymethyl Cellulose ( Sodium Cellulose Glycolate or C.M.C.) Solution

摘要

As one of our many studies on the industrial utilization of polyphosphates, this thematic experiment was carried out. Since C.M.C. has been used broadly for the manufacturing of papers, foods, cosmetics, adhesive etc. as the ingredient of them, the measurements on the variation of its viscosity with some electrotytes are important for concieving the behavior of aqueous solution containing such macromolecule. The outline of results is summarized briefly in the following. (I) Effects of 5 sorts of polyphosphates such as sodium pyrophosphate, sodium tripolyphosphate, sodium hexametaphosphate and thier mixtures on the about 2% C.M.C. solution are studied and the considerable reduction of their viscosity are observed. (II) Considering these reduction of the viscosity coming from the varied degree of kinking and aggregation of the linear negative ion, the influence of pH value of these solutions appears to be smaller than that of adsorption of phosphate ion or anti-ion.