Dynamic rheology of sodium deoxycholate gels

被引：46

作者：

Jover, A ^{[1
]}

Meijide, F ^{[1
]}

Núñez, ER ^{[1
]}

Tato, JV ^{[1
]}

机构：

[1] Univ Santiago de Compostela, Fac Ciencias, Dept Quim Fis & Fis Aplicada, Lugo 27002, Spain

来源：

LANGMUIR | 2002年 / 18卷 / 04期

关键词：

D O I：

10.1021/la011178h

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

A dynamic rheological study of sodium deoxycholate gels was carried out within the linear viscoelastic region. The effects of the oscillatory frequency f, sodium deoxycholate concentration, pH, temperature, and ionic strength (NaCl) were studied. The G' proportional to f(n) relationship, the creep-recovery experiments, and the frequency-temperature superposition principle strongly suggest that the interactions in the gel are physical in nature and that its mechanical behavior can be explained by a simple relaxation mechanism. It is concluded that the hydrogen bonds are the molecular forces involved in the formation, relaxation, and strength of the gel.

引用

页码：987 / 991

页数：5

共 28 条

[1] SELF BODYING ACTION OF MIXED EMULSIFIER SODIUM DODECYL SULFATE/CETYL ALCOHOL [J].

BARRY, BW .

JOURNAL OF COLLOID AND INTERFACE SCIENCE, 1968, 28 (01) :82-&

[2] STUDIES ON THE FORMATION OF HELICAL DEOXYCHOLATE COMPLEXES [J].

BLOW, DM ;

RICH, A .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1960, 82 (14) :3566-3571

[3]

Cabrer PR, 1999, LANGMUIR, V15, P5489

[4] MICELLE FORMATION BY BILE-SALTS - PHYSICAL-CHEMICAL AND THERMODYNAMIC CONSIDERATIONS [J].

CAREY, MC ;

SMALL, DM .

ARCHIVES OF INTERNAL MEDICINE, 1972, 130 (04) :506-+

[5] Aggregation behavior of bile salts in aqueous solution [J].

Coello, A ;

Meijide, F ;

Nunez, ER ;

Tato, JV .

JOURNAL OF PHARMACEUTICAL SCIENCES, 1996, 85 (01) :9-15

[6] X-ray and quasi-elastic light-scattering studies of sodium deoxycholate [J].

D'Archivio, AA ;

Galantini, L ;

Giglio, E ;

Jover, A .

LANGMUIR, 1998, 14 (17) :4776-4781

[7]

DASILVA JAL, 1994, CARBOHYD POLYM, V23, P77

[8] VISCOELASTIC PROPERTIES OF PHARMACEUTICAL SEMISOLIDS .I. OINTMENT BASES [J].

DAVIS, SS .

JOURNAL OF PHARMACEUTICAL SCIENCES, 1969, 58 (04) :412-&

[9] DYNAMIC RHEOLOGICAL MEASUREMENTS ON HEAT-INDUCED MYOSIN GELS - AN EVALUATION OF THE METHODS SUITABILITY FOR THE FILAMENTOUS GELS [J].

EGELANDSDAL, B ;

FRETHEIM, K ;

HARBITZ, O .

JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE, 1986, 37 (09) :944-954

[10] SIZE AND SHAPE OF SODIUM DEOXYCHOLATE MICELLAR AGGREGATES [J].

ESPOSITO, G ;

GIGLIO, E ;

PAVEL, NV ;

ZANOBI, A .

JOURNAL OF PHYSICAL CHEMISTRY, 1987, 91 (02) :356-362

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