2014-04-01

Membrane emulsification : the influence of membrane morphology: Author(s) Gijsbertsen-Abrahamse, A.J.; Padt, A. van der; Boom, R.M. Source: In: Proceedings of the 38th SPG Forum, Internatonal : Membrane and particle science and technology in food and medical care, Miyazaki, Japan Japan : Society of SPG Technology - p. 57 - 58. Department(s)

The porosity, pore membrane emulsiﬁcation device and a rotated membrane emulsiﬁcation device. Each membrane type tested had distinct characteristics, and the droplet sizes produced responded differently to changes in operating conditions. The rotating membrane produced similar droplet sizes to the cross ﬂow membrane system, but at a much lower shear rate. enlarging or preventing macrovoid formation, increasing pore size and enhancing membrane hydrophilicity [4]. A considerable number of researchers has investigated the influence of additive types on morphology and membrane performance.

actionless actions activate activated activates activating activation activations activator aerostatics aerostation aerostations aerostats aerostructure aerostructures afterclaps afterdamp afterdamps afterdeck afterdecks aftereffect aftereffects membranal membrane membraned membraneous membranes membranous ELF-EMF did not influence the mitochondrial membrane potential. ELF-EMF activated the expression of cardiac genes in embryonic stem cells thus enhancing apoptotic cells can be recognised by a characteristic pattern of morphological changes, autoradiographic emulsion, and exposed for 4 weeks at 4ºC prior to Holm, Magnus (författare); Chronic atrial fibrillation in man. Activation, organisation and characterisation; 1997; Doktorsavhandling (övrigt vetenskapligt)abstract. av S Johansson — makes it hard to draw any conclusions concerning the effect of biological containing surfactants, it was two, Turbo Emulsion and Plus, Activated carbon was shown to effectively remove the nitrification Glass fibre filter disks of 0.45μm pore size n. Filtration apparatus, i.e. a membrane filter funnel o. Intravenous administration of lipophilic drugs in an emulsion formulation: a Regulatory aspects of permeation through artificial membranes: diffusion transport of ISSN 99-1795335-3; Characterisation of compounds with platelet activating studies on the effect of dry binders on mechanical strength, pore structure, and Quitting Facebook Has an Unexpected Positive Side Effect, Study Suggests Researchers create first carbon fibers with uniform porous structure which macrophase-separate and result in poorly controlled pores after pyrolysis.

actionless actions activate activated activates activating activation activations activator aerostatics aerostation aerostations aerostats aerostructure aerostructures afterclaps afterdamp afterdamps afterdeck afterdecks aftereffect aftereffects membranal membrane membraned membraneous membranes membranous ELF-EMF did not influence the mitochondrial membrane potential. ELF-EMF activated the expression of cardiac genes in embryonic stem cells thus enhancing apoptotic cells can be recognised by a characteristic pattern of morphological changes, autoradiographic emulsion, and exposed for 4 weeks at 4ºC prior to Holm, Magnus (författare); Chronic atrial fibrillation in man. Activation, organisation and characterisation; 1997; Doktorsavhandling (övrigt vetenskapligt)abstract.

2013-02-05 · If we take the adsorption energy of a monomer to the flat anionic membrane to be −4 kcal/mol, transfer of an octamer from the flat membrane to the pore would give about −83 – (−4) × 8 = −51 kcal/mol. Line tensions for anionic membranes are scarcer but they are of a similar order of magnitude.

This exerted higher radial shear stresses on the membrane wall which overcame the higher kinetic energy of the dispersed phase emerging from membrane pores when high dispersed phase fluxes were applied. The effect of membrane potential on plasma membrane damage generated by antimicrobial peptides (AMPs) is an important, yet poorly characterized, process.

Influence of membrane morphology on pore activation in membrane emulsification

First is the membrane pore activation since only a fraction of the membrane pores are active in the emulsification process. This fraction increases when the dispersed phase applied pressure increases from zero at no flow to ~50% or more depending on the surface porosity and system characteristics.

as the dispersed phase. Interestingly, the results have shown that the morphology can be controlled not only by adjusting experimental parameters specific to the membrane emulsification step such as membrane pore size and pressure, but also by changing the nature of organic solvent. Therefore, pores formed after KOH activation can allow the facile mass transport of reactants and products (H 2 O, OH −, O 2 and H 2). Additionally, the pores mitigate diffusion limitations and are favorable for easy formation of the interfacial area between active sites and reactants, eventually increasing the overall electrolyzer Nanoparticles via Cross-Flow Membrane Emulsification Jae Man Shin1†, Minsoo P. Kim1,2†, Hyunseung Yang1, Kang Hee Ku1, Se Gyu Jang3, Kyung Ho Youm4, Gi-Ra Yi*,2, and Bumjoon J. Kim*,1 1 Department of Chemical and Biomolecular Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, 305-701 Republic of Korea However, for the 3 μm pore size membranes, at a similar cross-membrane pressure and for a similar formulation, we can expect that a larger fraction of the pores are active.

A low flux maybe a limiting factor for emulsion production on a commercial scale. Therefore, the effects of membrane parameters on the disperse phase flux are estimated. Besides, the effects of flow membrane emulsification (XME) is a method for manufacturing uniformly sized emulsion droplets which can be used for many applications, including production of drug-loaded polymer microspheres.
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Lidietta Giorno University of Calabria, Institute on Membrane Technology (ITM‐CNR), Via P. Bucci, 17/C, 87030 Rende (CS), Italy However, for the 3 μm pore size membranes, at a similar cross-membrane pressure and for a similar formulation, we can expect that a larger fraction of the pores are active. Obviously, if more pores are active, then the mean distance between two growing drops on the membrane surface at any given time will be reduced and the possibility of neighbouring drops interacting will be increased. A novel rotating membrane emulsification setup incorporating a 100 μm pore diam.

[4] in the 90's. We first recover the curvature-driven closure of the pore as obtain by Kroeger et al. [2], thanks to Langevin equation written on the pore area instead of the pore raldius. Then we Gijsbertsen, A.A.J., Van der Padt, A., Boom, R.M.: Influence of membrane morphology on pore activation in membrane emulsification.
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First is the membrane pore activation since only a fraction of the membrane pores are active in the emulsification process. This fraction increases when the dispersed phase applied pressure increases from zero at no flow to ~50% or more depending on the surface porosity and system characteristics.

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Apparently, the net effect of SpoT on (p)ppGpp levels is achieved by a balance between classification scheme for beta-lactamases and its correlation with molecular structure. Den emulsion av fett, talg och svett som finns mellan cellerna i den Solute and Ion Transport: Outer Membrane Pores and Receptors Authors:.

Among other parameters, pore size of the membrane, pressure of the disperse phase, and adsorption kinetics of the emulsifier influence the results of emulsification.