geoscience.net logo
+ Resolve Article
+ Follow Us
Follow on FacebookFollow on Facebook
Follow on TwitterFollow on Twitter

+ Translate
+ Subscribe to Site Feed
GeoScience Most Shared ContentMost Shared Content

Unusual wetting dynamics of aqueous surfactant solutions on polymer surfaces


, : Unusual wetting dynamics of aqueous surfactant solutions on polymer surfaces. Journal of Colloid and Interface Science 267(2): 456-462

Static and dynamic contact angles of aqueous solutions of three surfactants--anionic sodium dodecyl sulfate (SDS), cationic dodecyltrimethylammonium bromide (DTAB), and nonionic pentaethylene glycol monododecyl ether (C(12)E(5))--were measured in the pre- and micellar concentration ranges on polymer surfaces of different surface free energy. The influence of the degree of substrate hydrophobicity, concentration of the solution, and ionic/nonionic character of surfactant on the drop spreading was investigated. Evaporation losses due to relatively low humidity during measurements were taken into account as well. It was shown that, in contrast to the highly hydrophobic surfaces, contact angles for ionic surfactant solutions on the moderately hydrophobic surfaces strongly depend on time. As far as the nonionic surfactant is considered, it spreads well over all the hydrophobic polymer surfaces used. Moreover, the results obtained indicate that spreading (if it occurs) in the long-time regime is controlled not only by the diffusive transport of surfactant to the expanding liquid-vapor interface. Obviously, another process involving adsorption at the expanding solid-liquid interface (near the three-phase contact line), which goes more slowly than diffusion, has to be active.

US$29.90

PMID: 14583223


Other references

Meagher, S.E.; Fisk, N.M., 1992: Intrauterine transfusion in Rh alloimmunisation. Medical Journal of Australia 156(5): 302-304

Selwood, T.; Mccaslin, D.R.; Schechter, N.M., 1995: Characterization of the spontaneous inactivation of human mast cell tryptase with probes of active site structure. Journal of Investigative Dermatology 104(4): 637

Inoue, H.; Hiraoka, K.; Hoshino, T.; Okamoto, M.; Iwanaga, T.; Zenmyo, M.; Shoda, T.; Aizawa, H.; Nagata, K., 2008: High levels of serum IL-18 promote cartilage loss through suppression of aggrecan synthesis. Osteoarthritis (CIA) is closely related to the function of several inflammatory cytokines. It has been reported that older age is associated with higher serum levels of the inflammatory cytokine IL-18. In the present study, we investigated the lo...

Johnson Ronald C.; Nuccio Vito F., 1984: Late Cretaceous through early Tertiary general stratigraphy and structural geology of the Piceance Creek basin, Colorado. Open-File Report - U S

Ivolga, N.S.; Brenman, S.A.; Koval' chuk, V.S., 1993: Certification of sugar. Certification of sugar according to ISO specifications is explained, and measures required before Ukrainian sugar would satisfy them are indicated. Maximum contents of toxic impurities (mg/kg sugar) permissible in the Ukraine are included: Pb 1, C...

Winkleby, M.A.; Fortmann, S.P.; Barrett, D.C., 1990: Social class disparities in risk factors for disease: eight-year prevalence patterns by level of education. This article examines the associations between education, a primary indicator of social class, and six risk factors for disease. Data are presented on a sample of 3,349 individuals ages 25-74 years who participated in one of four cross-sectional s...

Gochnauer, A.C.; Trivedi, R.H.; Hill, E.G.; Wilson, M.Edward., 2010: Interocular axial length difference as a predictor of postoperative visual acuity after unilateral pediatric cataract extraction with primary IOL implantation. To develop a model that aids in the preoperative determination of predisposition to poor postoperative visual prognosis, specifically investigating the relationship between preoperative interocular axial length difference (IALD) and postoperative...

Bienstock, J.; Wang, E.; Blakemore, K.; Pressman, E., 1997: A comparison of outcomes for gestational diabetics cared for in a university housestaff clinic versus A managed care system. American Journal of Obstetrics & Gynecology 176(1 PART 2): S120

McLeod, E., 1974: Hospital volunteers. New Zealand Nursing Journal. Kai Tiaki 67(12): 25-25

Quarantelli, A.; Bonomi, A.; Righi, F.; Renzi, M.; Gabbi, C.; Cacchioli, A.; Alpigiani, I., 2003: The effects of different levels of dietary biotin on the performances and on bone growth in the broiler. Biotin supplementation effects on broiler performance and bone growth were evaluated. 2160 male Ross 508 stock chicks divided into 6 groups of 360 birds, were used. The control (group 1) chicks were fed biotin-deficient, pelleted feedstuff, specif...