The wettability of polytetrafluoroethylene by aqueous solution of cetyltrimethylammonium bromide and Triton X-100 mixtures

Dynamic contact angles on PTFE surface by aqueous surfactant solution in the absence and presence of electrolytes

“…For CTAB h A decreases gradually and significantly up to 0.75 mM with a value of 84.06°. This value is close to the reported value $83° [13]. In the case of h R there is a For the Teflon surface we have found that there is no linear relationship between cos h A (cosine of advancing angle) and surface tension as shown by Bernett and Zisman (1959) [29].…”

“…Proper wetting of hydrophobic solids with aqueous solutions becomes difficult due to low surface energy of the hydrophobic surfaces. Since water has a high surface tension (72.8 mN/m) it does not spontaneously spread over a solid whose surface free energy is less than 72.8 mN/m [13]. Thus, for wetting of a solid by water which has surface free energy smaller than 72.8 mN/m, we need to add surfactants to reduce the surface tension.…”

Behavior of tensioactive compounds in the solutions for silicon anisotropic etching

“…A method of an assessment of the effect of tensioactive compounds on the properties of etching solutions is a measurement of their surface tension. Despite the fact that these investigations concern the air -solution interface, many researchers claim that the observed phenomena are directly connected with the processes occurring on the surface of a solid immersed in the solution [16][17] .…”

Micellization and synergistic interaction of binary surfactant mixtures based on sodium nonylphenol polyoxyethylene ether sulfate

“…The combined sulfate group and the polyoxyethylene moiety of NPES are expected to display typical ionic and nonionic characteristics of surfactants concurrently. Compared with widely investigated nonionic surfactants such as Triton X-100 (TX100) [14][15][16][17], the micellization and synergistic properties of NPES binary surfactant mixtures have rarely been reported. The focus of this work was to examine the effect of a combination of sulfate group and polyoxyethylene moiety as the hydrophilic group on the aggregation properties of NPES-based binary surfactants mixtures.…”