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depletion flocculation

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Depletion Flocculation of Nonaqueous Dispersions ...

Depletion flocculation, induced in dispersions of hydrophobic silica particles in nonpolar media by the presence of binary mixtures of nonadsorbing polymers, has been investigated both experimentally and theoretically. The binary mixtures used were either similar polymers having different molecular weights or mixtures of chemically different polymers.

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Depletion stabilization and depletion flocculation ...

An approximate theory of depletion stabilization and depletion flocculation (i.e., stabilization and flocculation of colloidal particles by polymers in free solution) is presented.

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Enhancement of Ostwald Ripening by Depletion Flocculation ...

The depletion force can be effected by polymers (for a review see Jenkins and Snowden),22 by micelles,23 and even by colloidal particles of different sizes.24,25 Our assertion that depletion flocculation is the cause of the enhanced Ostwald ripening rates is based on the following evidence.

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Depletion Flocculation of Beverage Emulsions by Gum Arabic ...

Depletion flocculation was the possible effect due to a large amount of unadsorbed GGM in the continuous phase of emulsions, as previ- ously exhibited by a wide variety of biopolymers (Chanamai ...

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Continuum percolation and depletion flocculation: The ...

Using Brownian dynamics simulations, we investigate continuum percolation in a system of colloid particles aggregating due to depletion flocculation. For all values of aggregating potential, there is a lower threshold volume fraction of colloid particles at which a percolating cluster appears. This threshold defines a percolation "phase" boundary that crosses the phase boundary between the ...

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Depletion flocculation in colloidal dispersions, Advances ...

Depletion flocculation in colloidal dispersions Depletion flocculation in colloidal dispersions Jenkins, Paul; Snowden, Martin 1996-11-15 00:00:00 The destabilisation of colloidal dispersions by free, non-adsorbing polymer molecules in solution is reviewed from both a theoretical and experimental perspective. Consideration is given to the behaviour of polymers in solution in relation to the ...

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Flocculation of Kaolinite Clay using Natural Polymer.

Flocculation of Kaolinite Clay using Natural Polymer. B.C. Chukwudi, M.Eng.1* and Remy Uche, Ph.D.2. ... and depletion flocculation. During flocculation process, many of these mechanisms may be ... Kaolinite Clay using Natural Polymer". ...

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Depletion flocculation in colloidal dispersions, Advances ...

Depletion flocculation in colloidal dispersions Depletion flocculation in colloidal dispersions Jenkins, Paul; Snowden, Martin 1996-11-15 00:00:00 The destabilisation of colloidal dispersions by free, non-adsorbing polymer molecules in solution is reviewed from both a theoretical and experimental perspective. Consideration is given to the behaviour of polymers in solution in relation to the ...

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depletion interaction; brief explanation - YouTube

 · Brief explanation of the depletion interaction between colloidal particles induced in a solution containing nonadsorbing polymers by Remco Tuinier. Find a much deeper treatment of the subject in ...

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Depletion flocculation of particulate systems induced by ...

The flocculation behaviour of three different aqueous colloidal dispersion systems is examined in the presence of soluble hydroxyethyl cellulose (HEC) molecules by means of rheology.

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"Green" gold nanotriangles: synthesis, purification by ...

Therefore, a new type of separation procedure using combined polyelectrolyte/micelle depletion flocculation was successfully applied. As a result of the different purification steps, a green colored aqueous dispersion was obtained containing highly purified, well-defined negatively charged flat nanocrystals with a platelet thickness of 10 nm ...

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Depletion flocculation and depletion stabilization of ...

But, although depletion flocculation of particles is a well-estab- lished and much-studied phenomenon (see, e.g., Napper [5]), which is consistent with the requirement that the outside pressure on the cells

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(225d) Connecting the Depletion Flocculation and ...

In these suspensions it is well established that nanoparticles can exhibit a wide variety of phase behaviors through depletion flocculation at low-to-moderate free polymer concentrations. However, few studies fundamentally elucidate the fate of polymer-grafted particles in …

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Depletion Flocculation | Practical Solubility Science ...

Quick Start. From DLVO theory we know that adding polymers to a particulate system can stabilize it . Frustratingly, if we add a little too much polymer, we can de-stabilize the system via a non-intuitive effect called Depletion Flocculation.

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depletion flocculation - on the WEB

depletion flocculation - アルクがおけするするオンライン・データベース。なやから、イディオム、、スラングまでく。

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Depletion Flocculation of Beverage Emulsions by Gum Arabic ...

Depletion flocculation led to an increase in creaming instability and apparent viscosity of the emulsions. Flocculation could be nondestructively monitored by measuring the decrease in ultra-sonic attenuation of the emulsions. These results show that depletion flocculation …

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Harvesting of microalgae by bio-flocculation

 · Flocculation can also be induced by changing the culture conditions by applying extreme pH, nutrient depletion, temperature changes and changes of the level of dissolved O 2. For pre-harvesting of microalgae at large-scale these flocculation methods are not preferred.

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Serum separation and structure of depletion- and bridging ...

Flocculation by depletion and bridging was induced by addition of the polysaccharide carboxy-methylcellulose (CMC) to emulsions that were stabilised by -lactoglobulin ( …

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Phase Diagrams Arising from the Interaction Between ...

Depletion flocculation, the interaction of a non sorbing polymer with nano -colloids in a good solvent leading to phase separation with polymer -rich and colloid -rich phases, is a well-established phase separation mechanism with diverse applications.

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Flocculation - Wikipedia

Flocculation, in the field of chemistry, is a process wherein colloids come out of suspension in the form of floc or flake, either spontaneously or due to the addition of a clarifying agent. The action differs from precipitation in that, prior to flocculation, colloids are merely suspended in a liquid and not actually dissolved in a solution .

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HOME NEWS PUBLICATIONS LECTURES PATENTS …

C. Depletion Flocculation (Asakura & Oosawa, 1958; Sperry et al., 1981) Lower Entropy Higher Entropy When Interparticle Distance Approaches WSP Molecular Dimensions

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Influence of oat components on lipid digestion using an in ...

Abstract. Depletion flocculation is a well-known instability mechanism that can occur in oil-in-water emulsions when the concentration of non-adsorbed polysaccharide exceeds a certain level. This critical flocculation concentration depends on the molecular characteristics of the polysaccharide molecules, such as their molecular weight and hydrodynamic radius.

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Enhancement of Ostwald Ripening by Depletion Flocculation ...

This depletion flocculation enhancement in ripening rates in the presence of SDS micelles provides another, alternative, and self-consistent mechanism for the effect of …

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Clustering of Binary Colloidal Suspensions: Experiment

Clustering of Binary Colloidal Suspensions: Experiment MEHRDAD YASREBI, WAN Y. SHIH, AND ILHAN A. AKSAY ... centration appears similar to the depletion flocculation and depletion restabilization phenomena occurring in particle-polymer systems. ... flocculation rate …

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Serum separation and structure of depletion- and bridging ...

Flocculation by depletion and bridging was induced by addition of the polysaccharide carboxy-methylcellulose (CMC) to emulsions that were stabilised by -lactoglobulin ( …

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Flocculation - Definition, Glossary, Details - Oilgae

Flocculation from Wikipedia: Flocculation is a process where a solute comes out of solution in the form of floc or flakes. The action differs from precipitation in that the solute coming out of solution does so at a concentration generally below the one of its solubility limit in the liquid.

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flocculation | Definition of flocculation in English by ...

Definition of flocculation in English: flocculation. noun technical . See flocculate. Example sentences 'Several previous reports have dealt with the experimental and theoretical aspects of depletion aggregation, often termed depletion flocculation, as …

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remcotuinier - Google Sites

remcotuinier. Search this site. Remco's Science Info. Sitemap. Welcome to the site of Remco Tuinier ... Depletion flocculation of casein micelles induced by the EPS of a lactic acid bacterium, 9th Gums and Stabilisers for the Food Industry Conference, Wrexham, UK, July 1998.

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