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Titolo:
STUDIES ON THE 2ND VIRIAL-COEFFICIENT OF SODIUM ALGINATE SOLUTION
Autore:
ZHANG HC; ZHENG HH; ZHANG QZ; GAO SY; WANG JJ;
Indirizzi:
HENAN NORMAL UNIV,DEPT CHEM XINXIANG 453002 PEOPLES R CHINA HENAN NORMAL UNIV,DEPT CHEM XINXIANG 453002 PEOPLES R CHINA
Titolo Testata:
Polymers for advanced technologies
fascicolo: 11, volume: 8, anno: 1997,
pagine: 722 - 726
SICI:
1042-7147(1997)8:11<722:SOT2VO>2.0.ZU;2-5
Fonte:
ISI
Lingua:
ENG
Soggetto:
SOL-GEL TRANSITION; OSMOTIC-PRESSURE; DIVALENT-CATIONS;
Keywords:
SODIUM ALGINATE; MEMBRANE OSMOTIC PRESSURE; 2ND VIRIAL COEFFICIENT; THETA-POINT; DIETHYLENE GLYCOL;
Tipo documento:
Article
Natura:
Periodico
Citazioni:
24
Recensione:
Indirizzi per estratti:
Citazione:
H.C. Zhang et al., "STUDIES ON THE 2ND VIRIAL-COEFFICIENT OF SODIUM ALGINATE SOLUTION", Polymers for advanced technologies, 8(11), 1997, pp. 722-726

Abstract

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 thesecond 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 theta-point of polyelectrolyte solution fromA(2) determined by membrane osmometry. This is important in the investigation field of polymer solution theory and was proved to be correctif each polyelectrolyte molecule was ionized completely. The theta-solvent of sodium alginate aqueous solution was measured to be the concentration in 1.41 molar potassium nitrate per litre at 30 degrees C, and this experimental result indicated that Manning's polyelectrolyte solution theory model is fairly successful in explaining the colligativeproperties of polyelectrolyte solution. (C) 1997 by John Wiley & Sons, Ltd.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 19/09/20 alle ore 09:16:07