L3 (sponge) phase in the very dilute regime : spontaneous tearing of the membrane ?
نویسنده
چکیده
We use light scattering and conductimetry to investigate the
منابع مشابه
Scaling of Membrane Phase Dynamics
Fig. 1. Representations of two types of membrane morphologies: the sponge (L3) and lamellar (Lα) phases with their corresponding characteristic lengths. From the equation, it is clear that transient birefringence, occurring at low shear rates, requires very dilute samples, i.e., having small φ. Furthermore, the φ/ηs dependence suggests that increasing solvent viscosity to slow membrane fluctuat...
متن کاملAmine Based CO2 Absorption in Membrane Contactor Using Polyvinyl Pyrrolidone-modified Polysulfone Flat Sheet Membrane: Experimental Study and Mass Transfer Resistance Analysis
Membrane contactor using amine based absorbents is an efficient technology for CO2 separation from gaseous mixtures. A novel porous polysulfone (PSF) flat membrane was prepared via non-solvent phase inversion method. The PSF membrane was modified by adding polyvinyl pyrrolidone (PVP) to the dope solution. The fabricated membrane was used in the serpentine flow field contactor module for CO2 abs...
متن کاملTopological relaxation of a shear-induced lamellar phase to sponge equilibrium and the energetics of membrane fusion.
We report time-resolved small angle neutron scattering (t-SANS) measurements of the topological relaxation of Couette shear-induced stacked L(alpha) lamellar states to their multiconnected isotropic L3 sponge equilibrium phases in a surfactant bilayer membrane system. Comparison of this structural relaxation time to the interval between diffusive membrane contacts, as determined from dynamic li...
متن کاملExtraction of Silver Ions from Aqueous Solutions by Emulsion Liquid Membrane
A comprehensive study pertaining to the emulsion liquid membrane (ELM) extraction process to enrich dilute aqueous solutions of silver salt is presented. The study has highlighted the importance and influence of membrane composition for maximizing the extraction of Ag+ ions. The liquid membrane was made up of Cyanex-302 as an extractant and the industrial solvent mainly consists of p...
متن کاملRemoval of Dilute Benzene in Water through Ionic Liquid/Poly(Vinyl Chloride) Membranes by Pervaporation
This paper focuses on the effects of the addition of an ionic liquid, 1-Allyl-3-butylimidazilium bis(trifluoromethane sulfonyl)imide ([ABIM]TFSI), which has a high affinity for benzene, into the poly(vinyl chloride) (PVC) membrane on the pervaporation characteristics of the removal of benzene from aqueous solutions of dilute benzene. When aqueous solutions of 100~500 ppm benzene were permeated ...
متن کامل