<研究報告>アルギン酸およびその誘導体の物理化学的性質の研究(III) : アルギン酸ソーダの粘性におよぼす塩効果について

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This is a report of the effect of added salt on sodium alginate aqueous solution: 1. When neutral salt (sodium chloride) is added to sodium alginate aqueous solution, the viscosity of the solution decreases which is in accord with the concentration of added salt (Fig. 1 and table 1). 2. The difference of anion of added salt gives a little effect on the viscosity of sodium alginate at room temperature (Fig. 2). 3. The intrinsic viscosity of sodium alginate (M. W., about 100,000) can also be measured, as is the case with potassium cellulose sulfate, by one point measurement method (Fig. 3,4 and table 3). 4. When sodium oxalate in proper concentration is added to sodium alginate aqueous solution (Na ion concentration ratio of sodium alginate and sodium oxalate, C_1/C_0 = 1 : 6.4) and the mixture solution thus got in the above is warmed for 0. 5〜5 hours at 45〜50℃, the value of relative viscosity of sodium alginate increases as much as 60〜70% of the value before the above-mentioned treatment (Fig. 6). This phenomenon is also recognized in the addition of sodium citrate.
福岡女子大学の論文
1970-03-30