Effect of temperature and salt on the phase behavior of nonionic and mixed nonionic–ionic microemulsions with fish-tail diagrams

Influence of Amphiphiles on Percolation of AOT-Based Microemulsions Prediction Using Artificial Neural Networks

“…Mathew et al [10] observed that percolation threshold is altered by small additives concentrations such as cholesterol or gramicidin [5]. These findings have been confirmed by literature during the last decade [11][12][13][14]. In support of this, we can say that percolation is not a consequence of bicontinuous structures presented in the medium, because the structure of discrete droplets is not changed [5].…”

Phase behavior, interfacial composition and thermodynamic properties of mixed surfactant (CTAB and Brij-58) derived w/o microemulsions with 1-butanol and 1-pentanol as cosurfactants and n-heptane and n-decane as oils

“…Other group of workers [19][20][21] have also used this equation to determine the interfacial composition of balanced microemulsions stabilized by nonionic surfactants. We have recently used this method to determine the interfacial composition of mixed microemulsions derived from nonionic [polyoxyethylene (10)cetyl ether (Brij-56)]-anionic [sodium dodecyl benzene sulfonate (SDBS)] surfactants in presence of NaCl [22]. Recently Abuin et al [23,24] have estimated the minimum amount of alkanol required to produce quaternary w/o microemulsion for a series of alkanols (straight chain and branched chain), hydrocarbon solvents of different size and topology, and surfactants (cationic, anionic, nonionic, zwitterionic, and natural).…”

“…The formation of temperature insensitive microemulsions using ionic-nonionic blended surfactant systems has been reported [6,39,40]. But studies on interfacial composition of mixed surfactant derived microemulsion systems are rare [15,22,41]. We have recently initiated systematic physicochemical studies on w/o microemulsion systems stabilized by anionic-nonionic and cationic-nonionic blended surfactants using oils of different types [22,[42][43][44][45].…”

Microemulsions - A Brief Introduction

“…The phase diagrams of the systems with alkyl polyether surfactants have been studied extensively in different aspects, , Lang, 1999. Balogh, 2010, Selivanova et al, 2010, Boonme et al, 2006, Mitra & Paul, 2005, Lim et al, 2005.…”

“…It has been observed that the added salts has a great influence on the solubilisation ability of the microemulsion system (Komesvarakul et al, 2006, Wei et al, 2005, Li et al, 2003, Van Nieuwkoop & Snoei, 1985, Yu et al, 2009, Qin et al 2008, Nedjhioui et al, 2007, Koyanagi et al, 2007, Mitra & Paul, 2005, Shinoda, 1967, Shinoda & Saito, 1968. As an example, it has been observed that the addition of salt shifts the fish diagram towards more hydrophobic oil systems and higher surfactant concentrations will be required (Komesvarakul et al, 2006).…”