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https://www.sciencedirect.com/topics/engineering/support-layer
The main function of the porous membrane support layer is to provide the mechanical stability of the asymmetric membrane. Thus its porosity and mechanical strength must be balanced to achieve high transport ability of the solute component(s) and to provide a mechanically stable membrane structure.
https://www.sciencedirect.com/science/article/pii/S0376738819310002
Traditional reverse osmosis (RO) membranes, which is a thin film composite (TFC) consisting of a highly cross-linked polyamide (PA) layer on the surface of a porous supporting layer, still have a low water flux due to the thickness and roughness of the PA layer, and the resistance of the support layer. Despite recent progresses, the water flux attainable at the desired rejection level is relatively low and a …Cited by: 1
https://www.sciencedirect.com/science/article/pii/S0376738808002238
Jun 20, 2008 · The effects of support layer hydrophobicity on water flux are described by considering contact angle analysis of the various membrane layers, membrane orientation, membrane pre-wetting, PET fabric removal, feed solution gas content, and the presence of surfactants.Cited by: 434
https://www.sciencedirect.com/science/article/pii/S0011916412003906
Membrane support layers with mechanical and transport properties customized for engineered osmosis can potentially be produced via electrospinning. This fabrication technique uses electrostatic forces to produce mats of continuous micro- or nanoscale fibers with high strength-to-weight ratios [15], [16].Cited by: 120
https://www.sciencedirect.com/science/article/pii/S0376738818301297
Jun 15, 2018 · A typical PA TFC membrane consists of an ultra-thin PA selective layer synthesized by interfacial polymerization (IP), a porous polysulfone (PSf) support layer formed by phase separation and a layer of polyester non-woven fabric acts as mechanical backing.Cited by: 18
https://www.sciencedirect.com/science/article/pii/S0376738819317211
Oct 31, 2019 · The flux of support layer and prepared membrane falls quickly as the layer thickness increases. Considering the mechanical strength and permeability, the support layer with 1 h electrospinning time and separation layer with 8.82 g m −2 CNT were selected as optimum conditions for preparing the composite membrane.Author: Lei Du, Xie Quan, Xinfei Fan, Gaoliang Wei, Shuo Chen
https://en.wikipedia.org/wiki/Thin-film_composite_membrane
Membranes designed for desalination use an active thin-film layer of polyamide layered with polysulfone as a porous support layer. Other materials, usually zeolites , are also used in the manufacture of TFC membranes.
https://www.sciencedirect.com/science/article/pii/S0376738819310002
Traditional reverse osmosis (RO) membranes, which is a thin film composite (TFC) consisting of a highly cross-linked polyamide (PA) layer on the surface of a porous supporting layer, still have a low water flux due to the thickness and roughness of the PA layer, and the resistance of the support layer. Despite recent progresses, the water flux attainable at the desired rejection level is relatively low and a …Cited by: 1
https://mccutcheon.lab.uconn.edu/wp-content/uploads/sites/1184/2015/05/McCutcheon-JMS-318-2008-458-466.pdf
In this orientation, the membrane active layer is facing the feed solution and the support layer is facing the draw solution. This is the typical orientation for most membrane separation processes, such as reverse osmosis. However,inallourtests,fluxisosmoticallydrivenandnohydraulic pressure is used.
https://www.sciencedirect.com/science/article/pii/S0376738808002238
Jun 20, 2008 · Membrane support layer hydrophobicity significantly hinders water flux in osmotically driven membrane processes. Lack of sufficient support layer wetting not only exacerbates internal concentration polarization phenomena, but also disrupts water continuity within the membrane, thereby reducing the pathways for water transport.Cited by: 434
https://www.sciencedirect.com/science/article/pii/S0376738819317211
Oct 31, 2019 · The flux of support layer and prepared membrane falls quickly as the layer thickness increases. Considering the mechanical strength and permeability, the support layer with 1 h electrospinning time and separation layer with 8.82 g m −2 CNT were selected as optimum conditions for preparing the composite membrane.Author: Lei Du, Xie Quan, Xinfei Fan, Gaoliang Wei, Shuo Chen
https://www.sciencedirect.com/science/article/pii/S0011916412003906
Membrane support layers with mechanical and transport properties customized for engineered osmosis can potentially be produced via electrospinning. This fabrication technique uses electrostatic forces to produce mats of continuous micro- or nanoscale fibers with high strength-to-weight ratios [15], [16].Cited by: 120
https://www.sciencedirect.com/science/article/pii/S0376738819310002
Vertically aligned carbon nanotube (VACNT) wall membrane with its ultrafast water permeability shows a great promise as a novel support layer for membranes because of its ultrahigh porosity and hydrophobicity. In this work, we utilize the wall membrane as a support layer in forming a reverse osmosis (RO) membrane.Cited by: 1
https://www.sciencedirect.com/science/article/pii/S0376738808002238
Jun 20, 2008 · Membrane support layer hydrophobicity significantly hinders water flux in osmotically driven membrane processes. Lack of sufficient support layer wetting not only exacerbates internal concentration polarization phenomena, but also disrupts water continuity within the membrane, thereby reducing the pathways for water transport.Cited by: 434
https://en.wikipedia.org/wiki/Thin-film_composite_membrane
As is suggested by the name, TFC membranes are composed of multiple layers. Membranes designed for desalination use an active thin-film layer of polyamide layered with polysulfone as a porous support layer. Other materials, usually zeolites, are also used in the manufacture of TFC membranes. Applications. Thin film composite membranes are used in
https://mccutcheon.lab.uconn.edu/wp-content/uploads/sites/1184/2015/05/McCutcheon-JMS-318-2008-458-466.pdf
the pores and cavities within the support layer. The support layer does not need to fully wet in order to ensure adequate perme-ate water flux. When these asymmetric membranes are used in osmotically driven membrane processes, however, the support layer must fully wet …
https://patents.google.com/patent/JP2016504175A/en
A porous support layer for a composite oxygen transport membrane having a porosity of greater than 20% and a fluorite-type structure having a microstructure exhibiting a substantially uniform pore size distribution throughout the porous support layer The porous support layer is made of an ion conductive material and is made from a mixture containing an ion conductive material having a fluorite ...Author: ペティニー ナタリー, サラントプーロ クリスト
https://patents.google.com/patent/US8181794B2/en
Forward osmosis membranes include an active layer and a thin support layer. A bilayer substrate including a removable backing layer may allow forward osmosis membranes with reduced supporting layer thickness to be processed on existing manufacturing lines.Cited by: 49
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