A study of the solution, interfacial and wetting properties of silicone surfactants

Kinetics of spreading of synergetic surfactant mixtures in the case of partial wetting

“…The former value is in a very good agreement with that reported for Zonyl in [29]. The latter is a little bit higher than reported for C 12 (EO) 8 in [31], 0.06 g/l. The difference can be caused by a variation in the samples chemistry, especially taken into account that surfactant was used as purchased in this study, whereas in [31] it was purified.…”

“…The difference can be caused by a variation in the samples chemistry, especially taken into account that surfactant was used as purchased in this study, whereas in [31] it was purified. The concentration of solutions used are 0.1-10g/l for C 12 (EO) 8 and 0.5-10 g/l for Zonyl, i.e. they are above the corresponding cmc values.…”

“…According to [7] spreading during the inertial stage does not depend on surfactant properties and concentration and is similar to that of pure liquids, whereas during the viscous stage it becomes surfactant depending and spreading exponent may be higher than that for pure liquids [7]. The most important distinction of the spreading of surfactant solutions from that of pure liquids in the case of complete wetting is the third stage, referred to as surfactant enhanced spreading or superspreading [7][8][9][10][11][12][13][14][15]. During this stage the spreading accelerates again demonstrating spreading exponent up to 0.5.…”

Voltage-induced spreading and superspreading of liquids

“…Thus, in a similar manner to topographic enhancement of the capillary drive for spreading to obtain a superspreading law, a voltage-induced superspreading should be achievable on what would be a partial wetting surface in the absence of a voltage. It also provides an alternative to the use of surfactants to both induce wetting of a surface that would not normally wet (that is, superwetting), and to increase the rate of spreading (that is, superspreading) on surfaces [20][21][22][23][24][25][26][27] . Voltage-induced spreading of dielectric liquid stripes.…”

“…In the de Gennes macroscopic approach, the viscous dissipation of energy per unit length of contact line is given by 2,4,[17][18][19][20][21] ,…”