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Studies on the second virial coefficient of sodium alginate solution

✍ Scribed by Hucheng Zhang; Honghe Zheng; Qinghi Zhang; Shuyan Gao; Jianji Wang

Publisher
John Wiley and Sons
Year
1997
Tongue
English
Weight
260 KB
Volume
8
Category
Article
ISSN
1042-7147

No coin nor oath required. For personal study only.

✦ Synopsis

Based on the measurement of the concentration dependence of the osmotic pressure of sodium alginate aqueous solution in different concentrations of potassium nitrate, the contribution of polyion charges to the second virial coefficient was predicted. According to this analysis, an equation A 2 = A 2, O + A 2, D was obtained, and a method was introduced to determine the -point of polyelectrolyte solution from A 2 determined by membrane osmometry. This is important in the investigation field of polymer solution theory and was proved to be correct if each polyelectrolyte molecule was ionized completely. Thesolvent of sodium alginate aqueous solution was measured to be the concentration in 1.41 molar potassium nitrate per litre at 30Β°C, and this experimental result indicated that Manning's polyelectrolyte solution theory model is fairly successful in explaining the colligative properties of polyelectrolyte solution.

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