Cloud Unlike cloud point, this is observed in aqueous solution. It is observed that the micellization tendency of the polysorbates changes in the presence of different additives. Cloud point of nonionic surfactants: modulation with measurements, and cloud point extraction, micelle/ water partition coefficients in various surfactant systems are determined reliably. When the temperature is below 0 °C, the dew point is called the fros… 1. In conventional CPE methods, non-ionic surfactants such as Triton X-100 and Triton X-114 are used. Surfactants adsorb preferably at interfaces where they find the energetically most favourable conditions due to their two-part structure. Test methods Cloud point in C according to EN 1890: Method A: 1 g surfactant + 100 g distilled water Method B: 1 g surfactant + 100 g NaCl solution (c = 50 g/l) Method C: 1 g surfactant + 100 g NaCl solution (c = 100 g/l) Method D: 5 g surfactant + 45 g of diethylene glycol monobutyl ether solution (c = 250 g/l) Method E: 5 g surfactant + 25 g of diethylene glycol monobutyl ether … BEROL 185. 2000; Loll their effects on surfactant phase behavior and micelle and et al. Cloud Point Results. Cloud surfactant Many solutions of common nonionic surfactants and water separate into two phases when heated above a certain temperature (the cloud point), and some investigators call the phase of greater surfactant concentration, a microemulsion.Thus, there is not even universal agreement that a microemulsion must contain oil. K. Golemanov et al., “Breakup of bubbles and drops in steadily sheared foams and concentrated emulsions”, Phys. The former, called cloud point (CP), is the temperature at which POSs precipitate from solution on heating because of excessive dehydration of their polyoxyethylene (POE) moieties.

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