Cationic Surfactants (Surfactant Science) by D. Rubingh

By D. Rubingh

Targeting the answer actual chemistry and floor homes of cationic surfactants, 3 significant sections learn the houses of cationic surfactants themselves either in answer and at interfaces, the interactions of cationic surfactants with different fabrics, and purposes of cationic s

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1% terminating at 37°C. 1/2W. 0°C. 1/2W does not (at equilibrium) form, on melting, a liquid phase of the same compositionwhich would constitute congruent melting. Instead, it disproportionates to a concentrated phase (the dry crystal, X) and a dilute phase (the D liquid crystal). The dry crystal is indicated to melt simply to the dry liquid at about 175°C Page 18 (see below). The hemihydrate is also presumed to occur in the N-methylated systems, but the evidence for this is weaker. Finally, the lower dashed line in Fig.

H. LucassenReynders (out of print) Volume 12: AMPHOTERIC SURFACTANTS, edited by B. R. Bluestein and Clifford L. Hilton Volume 13: DEMULSIFICATION: INDUSTRIAL APPLICATIONS, by Kenneth J. Lissant Volume 14: SURFACTANTS IN TEXTILE PROCESSING, by Arved Datyner Volume 15: ELECTRICAL PHENOMENA AT INTERFACES: FUNDAMENTALS, MEASUREMENTS, AND APPLICATIONS, edited by Ayao Kitahara and Akira Watanabe Volume 16: SURFACTANTS IN COSMETICS, edited by Martin M. Rieger Volume 17: INTERFACIAL PHENOMENA: EQUILIBRIUM AND DYNAMIC EFFECTS, by Clarence A.

Neither of the methods used is capable of accurately defining the boundaries of the cubic phase region. Investigations using the penetration method of the sequence of liquid crystal phases which occur in fifty mono-long-chain cationic surfactant salt-water systems were recently reported [58]. The most common phase sequence found was the hexagonal-cubic-lamellar (H1-V1-La) sequence. This particular cubic phase (V1) was termed a "bicontinuous" phase. In specific instances "discontinuous" or globular (I1) cubic phases, or the birefringent "intermediate'' phases recognized first in soap-water systems [28,29], were also found.

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