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Showing 1 to 8 of 8 for “"foam films"”.
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Surface Forces in Foam Films
Fundamental studies of surface forces in foam films are carried out to explain the stability of foams and froths in froth flotation. The thin film pressure balance (TFPB) technique was used to study the surface forces between air bubbles in water from equilibrium film thickness and dynamic film …
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Particle-stabilised foams and foam films
… to investigate and understand the properties of foams and foam liquid films stabilised by colloidal solid particles, in the absence of any surface active substances, e.g. surfactants. Foams occur as end products or during the processing of products in many industries, including detergents, food …
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Preparation and investigation of polymer-foam films and polymer-layer systems for ferroelectrets
… Over the past two decades, polypropylene (PP) foams have been investigated with the aim of ferroelectret applications, and some products are already on the market. PP-foam ferroelectrets may exhibit piezoelectric d33 coefficients of 600 pC/N and more. Their operating temperature can, however, …
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Effect of Non-Ionic Surfactants and Nano-Particles on the Stability of Foams
… were used to study the stability of single foam films produced in the presence of n-alkyl polyoxyethylene (CnEOm) homologues. The results showed that films thin faster than predicted by the classical DLVO theory, which considers contributions from the van der Waals-dispersion and …
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Thin liquid films with nanoparticles and rod-like ions as models for nanofluidics
… The present work employed thin liquid films (TLFs) as experimental models. They have proven to be useful experimental tools because of their simple geometry, reproducible preparation, and controllable liquid interfaces. The thickness of the channels can be adjusted easily by the …
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Surface and Hydrodynamic Forces in Wetting Films
… on the surface of a bubble, the thin liquid films (or wetting films) of water formed in between must rupture. According to the Frumkin-Derjaguin isotherm, it is necessary that wetting films can rupture when the disjoining pressures are negative. However, the negative disjoining pressures are …
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Surface Forces in Thin Liquid Films
Thin liquid films (TLFs) of water are ubiquitous in daily lives as well as in many industrial processes. They can be formed between two identical phases, as in colloid films between two macroscopic surfaces and foam films between two air bubbles; and between two dissimilar phases, as in wetting …
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Experimental and Modelign of Foam Physics in Porous Media
Foam is a dispersion of gas in a liquid, where the liquid is continuous and part of the gas is made discontinuous by thin liquid films (lamellae) (Hirasaki and Lawson, 1985). Foam promises to substantially improve reservoir sweep in gas-injection enhanced oil recovery (EOR) projects. Predictive …