Development of a Coating Method for Polydecylmethylsiloxane Selective Layer on Polysulfone Hollow Fiber Support

2021 ◽  
Vol 899 ◽  
pp. 275-280
Author(s):  
Ilya L. Borisov ◽  
Evgenia Grushevenko ◽  
Elena Buinova ◽  
Vladimir Volkov
Keyword(s):  
Composite Membrane ◽  
Hollow Fiber ◽  
Model Mixture ◽  
Outer Side ◽  
Selective Layer ◽  
Methane Gas ◽  
Separation Selectivity ◽  
Coating Method ◽  
High Separation ◽  
Layer Coating

The paper presents a comparison of the techniques for polydecylmethylsiloxane selective layer coating to the inner and outer sides of a polysulfone hollow fiber support. It has been shown that coating to the outer side allows one to obtain a composite membrane with a higher selectivity for CO2/N2 vapor. A decrease in the number of defects in the selective layer is achieved by increasing the viscosity of the polydecylmethylsiloxane solution. The resulting membrane was characterized in the separation of a model mixture of hydrocarbons, and a high separation selectivity was shown - 12.4 with respect to the n-butane / methane gas pair.

Influence of Casting Method on Pervaporational Performanses of Polyheptylmethylsiloxane Membranes

2020 ◽  
Vol 869 ◽  
pp. 51-55
Author(s):  
Evgenia Grushevenko ◽  
Ivan A. Podtynnikov ◽  
Olga Sharova ◽  
Tatiana Anokhina ◽  
Ilya L. Borisov
Keyword(s):  
Transport Properties ◽  
Composite Membrane ◽  
Spin Coating ◽  
Casting Method ◽  
Selective Layer ◽  
Spin Coating Method ◽  
Coating Method ◽  
Membrane Pervaporation ◽  
First Time

A method of composite membrane obtaining effects on its transport properties. In the present work, for the first time, the influence of the method of applying a selective layer of polyheptylmethylsiloxane on the composite membrane pervaporation properties in the process of alcohol separation from water was studied. The comparison of two casting methods (kiss-coating and spin-coating) was conducted. Morphology of the obtained membranes and their separation properties during the pervaporation of the mixture of C2-C4 alcohols and water. It was shown that kiss-coating allows completely prevent leakage of the selective layer into the substrate pores. And, such a way, it allows to improve permeability of composite membrane (BuOH - 3.5 mol/(kPa·h·m2)). Besides, spin-coating method leads to higher selectivity (BuOH/H2O - 2.3). It is caused by blocking the swelling of that part of the selective layer that is locked in the pores of the substrate. Thus, the choice of the casting method can determine the compatibility of the composite membrane with a specific separation task.

scholarly journals Preparation of Polypropylene/PVDF Composite Membrane by Dip-Coating Method

2021 ◽  
Vol 1115 (1) ◽  
pp. 012028
Author(s):  
P T P Aryanti ◽  
G Trilaksono ◽  
A Hotmaida ◽  
M A Afifah ◽  
F P Pratiwi ◽  
...  
Keyword(s):  
Composite Membrane ◽  
Dip Coating ◽  
Coating Method ◽  
Dip Coating Method

Nanocellulose as Modifier for Hollow Fiber Ultrafiltration PSF Membranes

2019 ◽  
Vol 816 ◽  
pp. 238-243 ◽  
Author(s):  
Tatyana S. Anokhina ◽  
S.D. Bazhenov ◽  
Ilya L. Borisov ◽  
V.P. Vasilevsky ◽  
V.A. Vinokurov ◽  
...  
Keyword(s):  
Transport Properties ◽  
Hollow Fiber ◽  
Cellulose Nanofibrils ◽  
Membrane Modification ◽  
Selective Layer ◽  
Blue Dextran ◽  
First Time ◽  
Molding Solution

In the present work, a study was conducted for the first time on the modification of hollow fiber UF PSF membranes by cellulose nanofibrils. Two approaches to membrane modification were analyzed: 1) introduction of CNF into the molding solution; 2) additions of CNF to the internal coagulant. Analysis of the transport properties of the investigated membranes showed that the first approach allows increasing the porosity of hollow fiber PSF membranes, due to which the permeability increases from 82 to 287 l / m2 h bar compared to the original membranes. Rejection of dye Blue Dextran (MM = 69 kg / mole) is reduced by 20%. The addition of CNF to the outside coagulant led to the formation of not only the inside selective layer, but also the outer one, while the permeability increases 1.5 times, and the rejection of the dye also increases from 96 to 99%.

Porous ceramic hollow fiber-supported Pebax/PEGDME composite membrane for CO2 separation from biohythane

RSC Advances ◽  
2015 ◽  
Vol 5 (74) ◽  
pp. 60453-60459 ◽  
Author(s):  
Jun Cheng ◽  
Leiqing Hu ◽  
Chaofan Ji ◽  
Junhu Zhou ◽  
Kefa Cen
Keyword(s):  
Composite Membrane ◽  
Hollow Fiber ◽  
Porous Ceramic ◽  
Co2 Separation ◽  
Excellent Performance ◽  
The Ideal

Ceramic hollow fiber-supported Pebax/PEGDME membrane was prepared to separate CO2. The composite membrane showed excellent performance of removing CO2 from biohythane. The ideal CO2/H2 selectivity increased to 26 when temperature decreased to 10 °C.

Hollow fiber composite membrane modules for reverse osmosis

Desalination ◽  
1977 ◽  
Vol 22 (1-3) ◽  
pp. 221-227 ◽  
Author(s):  
R.B. Davis ◽  
R.D. Burchesky ◽  
M.J. Coplan
Keyword(s):  
Reverse Osmosis ◽  
Composite Membrane ◽  
Hollow Fiber ◽  
Fiber Composite ◽  
Hollow Fiber Composite Membrane ◽  
Membrane Modules

scholarly journals Fabrication of Polydimethysiloxane (PDMS) Dense Layer on Polyetherimide (PEI) Hollow Fiber Support for the Efficient CO2/N2 Separation Membranes

Polymers ◽  
2021 ◽  
Vol 13 (5) ◽  
pp. 756
Author(s):  
Guoqiang Li ◽  
Katarzyna Knozowska ◽  
Joanna Kujawa ◽  
Andrius Tonkonogovas ◽  
Arūnas Stankevičius ◽  
...  
Keyword(s):  
Gas Separation ◽  
Hollow Fiber ◽  
Hollow Fiber Membrane ◽  
Dip Coating ◽  
Separation Performance ◽  
Dense Layer ◽  
Pdms Layer ◽  
Coating Method ◽  
Coating Time ◽  
Dip Coating Method

The development of thin layer on hollow-fiber substrate has drawn great attention in the gas-separation process. In this work, polydimethysiloxane (PDMS)/polyetherimide (PEI) hollow-fiber membranes were prepared by using the dip-coating method. The prepared membranes were characterized by Scanning Electron Microscope (SEM), energy-dispersive X-ray spectroscopy (EDX), and gas permeance measurements. The concentration of PDMS solution and coating time revealed an important influence on the gas permeance and the thickness of the PDMS layer. It was confirmed from the SEM and EDX results that the PDMS layer’s thickness and the atomic content of silicon in the selective layer increased with the growth in coating time and the concentration of PDMS solution. The composite hollow-fiber membrane prepared from 15 wt% PDMS solution at 10 min coating time showed the best gas-separation performance with CO2 permeance of 51 GPU and CO2/N2 ideal selectivity of 21.

Preparation of antifouling polypropylene/ZnO composite hollow fiber membrane by dip-coating method for peat water treatment

2020 ◽  
Vol 34 ◽  
pp. 101158 ◽  
Author(s):  
I.G. Wenten ◽  
K. Khoiruddin ◽  
A.K. Wardani ◽  
P.T.P. Aryanti ◽  
D.I. Astuti ◽  
...  
Keyword(s):  
Water Treatment ◽  
Hollow Fiber ◽  
Hollow Fiber Membrane ◽  
Dip Coating ◽  
Fiber Membrane ◽  
Coating Method ◽  
Dip Coating Method
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