✦ LIBER ✦

The influence of surfactants on the wetting of hydrophobic microporous surfaces

✍ Scribed by G. Popescu; Gh. Nechifor; M. Olteanu

Publisher: Elsevier Science
Year: 1994
Tongue: English
Weight: 600 KB
Volume: 90
Category: Article
ISSN: 0927-7757
DOI: 10.1016/0927-7757(94)02883-4

No coin nor oath required. For personal study only.

✦ Synopsis

The influence of surfactants upon the wettability of some hydrophobic microporous membranes of polysulphone was studied by determining the contact angle and the ultrafiltration rates . The water-membrane contact angle increases with roughness and changes in the presence of surfactant in aqueous solution to an extent which depends on the surfactant's nature and concentration . The variations of the contact angle of the surfactant in aqueous solution are in good agreement with the variation of the rate of ultrafiltration of the solutions through the membranes and with the adsorption of the surfactants on the polysulphone surface .

📜 SIMILAR VOLUMES

The Influence of Surfactants on the Hydr

The Influence of Surfactants on the Hydrodynamics of Surface Wetting: I. The Nondiffusing Limit

✍ A.K. Chesters; A.B.A. Elyousfi 📂 Article 📅 1998 🏛 Elsevier Science 🌐 English ⚖ 200 KB

The hydrodynamic model of steady wetting developed by Boender et al. is extended to include the effect of a (nonionic) surfactant in the limiting case of negligible diffusion and low concentrations, confining attention to steady wetting between parallel plates. The approximation that the meniscus in

Influence of Surfactant Structure on Wet

Influence of Surfactant Structure on Wettability Modification of Hydrophobic Granular Surfaces

✍ Ramesh Varadaraj; Jan Bock; Neil Brons; Steve Zushma 📂 Article 📅 1994 🏛 Elsevier Science 🌐 English ⚖ 150 KB

Adsorption of Single Anionic Surfactants

Adsorption of Single Anionic Surfactants on Hydrophobic Surfaces

✍ Carl E. Hoeft; Richard L. Zollars 📂 Article 📅 1996 🏛 Elsevier Science 🌐 English ⚖ 167 KB

figuration in which they adsorb. Measurements of adsorption The adsorption of a series of linear alkyl sulfonates and linear isotherms will yield the adsorbed amount, while an underalkyl sulfates on sulfonated polystyrene latexes of various surface standing of the features of the isotherms can lead

Silicon-modified surfactants and wetting

Silicon-modified surfactants and wetting: V. The spreading behaviour of trimethylsilane surfactants on energetically different solid surfaces

✍ R. Wagner; Y. Wu; H. V. Berlepsch; H. Zastrow; B. Weiland; L. Perepelittchenko 📂 Article 📅 1999 🏛 John Wiley and Sons 🌐 English ⚖ 140 KB 👁 2 views

The spreading behaviour of defined trimethylsilane-based surfactants of general formula (CH 3 ) 3 Si(CH 2 ) 6 (OCH 2 CH 2 ) n OCH 3 , n = 2-6, on five different solid surfaces at 21 °C has been investigated. Compounds bearing short diethylene and triethylene glycol hydrophiles do not spread. For the

Superspreading of water—silicone surfact

Superspreading of water—silicone surfactant on hydrophobic surfaces

✍ S. Zhu; W.G. Miller; L.E. Scriven; H.T. Davis 📂 Article 📅 1994 🏛 Elsevier Science 🌐 English ⚖ 724 KB

Silicon-modified carbohydrate surfactant

Silicon-modified carbohydrate surfactants. IV. The impact of substructures on the wetting behaviour of siloxanyl-modified carbohydrate surfactants on low-energy surfaces

✍ R. Wagner; L. Richter; J. Weißmüller; J. Reiners; K. D. Klein; D. Schaefer; S. S 📂 Article 📅 1997 🏛 John Wiley and Sons 🌐 English ⚖ 323 KB 👁 2 views

The siloxanyl-modified carbohydrate surfactants investigated consist of the four structural elements: (1) siloxanyl moiety; (2) spacer; (3) carbohydrate unit; and (4) modifying element. By static surface tension (␥ lv , ) and wetting tension (␥ sv Ϫ ␥ sl , ␣) measurements the contact angles of aqueo