Phase behavior and solution properties of sodium (3-dodecanoyloxy-2-hydroxy-propyl) succinate in water

Citation
J. Feng et al., Phase behavior and solution properties of sodium (3-dodecanoyloxy-2-hydroxy-propyl) succinate in water, COLLOID P S, 279(1), 2001, pp. 92-97
Citations number
21
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Organic Chemistry/Polymer Science
Journal title
COLLOID AND POLYMER SCIENCE
ISSN journal
0303-402X → ACNP
Volume
279
Issue
1
Year of publication
2001
Pages
92 - 97
Database
ISI
SICI code
0303-402X(200101)279:1<92:PBASPO>2.0.ZU;2-X
Abstract
Sodium (3-dodecanoyloxy-2-hydroxy-propyl) succinate (SLGMS) is a conjugated anionic surfactant in which a glycerol residue connects with a hydrophilic sodium succinate and dodecanoate. Aqueous micellar phase (W-m), hexagonal (H-1), bicontinuous cubic (V-1), and lamellar (L-alpha) phases are successi vely formed with increasing the surfactant concentration in a binary SLGMS- water system. The Krafft point is below 0 degreesC. The effective cross sec tional area per surfactant molecule alpha (s), in the H-1 phase is almost c onstant, 0.5 nm(2) and the shape of cylindrical micelle is almost unchanged with surfactant concentration. The cmc value of SLGMS measured by means of surface tension, electrical conductivity, and fluorescence probe methods i s in the range of 4 similar to9 x 10(-5) mol/l that is much lower than that of sodium dodecanoate, 2 x 10(-2) mol/l or SDS, 8 x 10(-3) mol/l. Hence, i t is considered that the polar glycerol part in the SLGMS acts as a hydroph obic part. The solubilization of oil in the SLGMS solution is much higher t han that in the SDS solution and this also suggests that the glycerol and s uccinic units act as lipophilic moieties.