Water of hydration in coagels

MOIRA AMBROSI, PIERANDREA LO NOSTRO, LAURA FRATONI, LUIGI DEI, BARRY W. NINHAM, SANTIAGO PALMA, RUBEN H. MANZO, DANIEL ALLEMANDIB AND PIERO BAGLIONI

PHYSICAL CHEMISTRY CHEMICAL PHYSICS

RSC

Año: 2004 vol. 6 p. 1401 - 1401

1463-9076

font face="AdvSTP_PSTimR" size="1"> Vitamin C-based alkanoyl-6-O-ascorbic acid esters, ASCn, are a class of surfactants, interesting both on account of their phase behaviour, and of the properties of the supramolecular assemblies they form. When dispersed in water at room, or lower, temperatures above ca. 5% w/w concentration, they form coagels. At higher temperatures, the microstructure changes to micellar solutions for surfactants of low hydrocarbon chain length n. The longer chained systems form gel phases. The transition enthalpy chang