Preparation and characterization of microporous poly(vinyl butyral) membranes by supercritical CO2-induced phase separation

Li, Zhiyi; Hui-hua, Tang; Liu, Xuewu; Yuanjing, Xia; Jiang, Jingzhi

doi:10.1016/j.memsci.2007.12.043

Cited by 27 publications

(10 citation statements)

References 28 publications

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“…A phase transition is caused by the casting solution that also affects the membrane formation . The membrane structure is mainly affected by kinetic parameters such as in solvent–nonsolvent exchange …”

Section: Introductionmentioning

confidence: 99%

Effects of geometry and PVP addition on mechanical behavior of PEI membranes for use in wastewater treatment

Tüfekçi

Durak

Ormancı-Acar

et al. 2018

J of Applied Polymer Sci

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This study focuses on the mechanical behavior and design of membrane filters that are used in water and wastewater treatment. The aim of this study is, after characterizing the mechanical behavior of the membrane materials, to find a better shape in terms of mechanical parameters. As the first step, uniaxial tensile testing is applied to the produced polymeric membranes with certain contents of poly(ether imide), poly(vinylpyrrolidone), and N-methyl-2-pyrrolidone to get an understanding of the mechanical behavior of the membrane materials. The material data obtained from this experimental process are used as input to software where a finite element model of the membrane is built. Each geometry has the same boundary conditions and the same area, and the same pressure is applied to each geometry. Using these numerical models, the selected geometries are analyzed in terms of displacement, equivalent stress, and equivalent strain. The results are discussed based on these parameters.

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Section: Introductionmentioning

confidence: 99%

Effects of geometry and PVP addition on mechanical behavior of PEI membranes for use in wastewater treatment

Tüfekçi

Durak

Ormancı-Acar

et al. 2018

J of Applied Polymer Sci

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“…Therefore, the solidification rate of the interfacial polymer becomes fast and a porous layer is formed on one face of an already dense nanocomposite polyethersulfone membrane. Also, the increase of CO 2 pressure results in an increase of CO 2 incorporation into the polymer solution and thus causes a decrease in the solution viscosity due to the decrease of the polymer concentration [36].…”

Section: Resultsmentioning

confidence: 99%

Fabrication of integrally skinned asymmetric membranes based on nanocomposite polyethersulfone by supercritical CO2 for gas separation

Adib

Hassanajili

Mowla

et al. 2015

The Journal of Supercritical Fluids

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“…Supercritical carbon dioxide has been successfully applied in various processes, both as a solvent and reaction medium (Bogel-Łukasik et al, 2009;Brunner 2004Brunner , 2010Conceiao et al, 2012;Sovova and Stateva, 2011;Yin et al, 2005). Examples of current scCO 2 applications in membrane technologies are presented in literature (Akin and Temelli, 2011;Li et al, 2008;Xinli et al, 2009;Zhang et al, 2007). It was experimentally proved that the extraction process carried out using scCO 2 as carrier fluid is very effective due to its unique properties.…”

Section: Introductionmentioning

confidence: 99%

Enhancement of Supercritical Fluid Extraction in Membrane Cleaning Process by Addition of Organic Solvents

Krzysztoforski¹,

Krasiński²,

Henczka³

et al. 2013

Chemical and Process Engineering

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In this study, the process of membrane cleaning by supercritical fluid extraction was investigated. Polypropylene microfiltration membranes, contaminated with oils, were treated in a batch process with a supercritical fluid (SCF). As extractant, pure supercritical carbon dioxide or supercritical carbon dioxide with admixtures of methanol, ethanol and isopropanol were used. Single-stage and multi-stage extraction was carried out and process efficiency was determined. The obtained results showed that addition of organic solvents significantly enhances the cleaning performance, which increases with increase of organic solvent concentration and decreases with increasing temperature. All three solvents showed a comparable effect of efficiency enhancement. The results confirmed that supercritical fluid extraction can be applied for polypropylene membrane cleaning.

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Preparation and characterization of microporous poly(vinyl butyral) membranes by supercritical CO2-induced phase separation

Cited by 27 publications

References 28 publications

Effects of geometry and PVP addition on mechanical behavior of PEI membranes for use in wastewater treatment

Effects of geometry and PVP addition on mechanical behavior of PEI membranes for use in wastewater treatment

Fabrication of integrally skinned asymmetric membranes based on nanocomposite polyethersulfone by supercritical CO2 for gas separation

Enhancement of Supercritical Fluid Extraction in Membrane Cleaning Process by Addition of Organic Solvents

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