2016
DOI: 10.1016/j.memsci.2016.04.003
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Influence of substrate processing and interfacial polymerization conditions on the surface topography and permselective properties of surface-patterned thin-film composite membranes

Abstract: The influence of substrate topography and interfacial polymerization (IP) conditions were investigated during the fabrication of patterned thin-film composite (TFC) membranes. Aromatic and semi-aromatic polyamide layers were formed atop patterned ultrafiltration (UF) membrane supports by IP using different concentrations of m-phenylenediamine (MPD) or piperazine (PIP) in water of 0.01-2 % w/v with a fixed concentration of trimesoyl chloride in hexane of 0.1 % w/v. For all conditions evaluated, TFC membranes wi… Show more

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Cited by 77 publications
(44 citation statements)
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“…The imprinted membrane permeance appears to have less variance at all pressures, as well as, at the highest pressure their permeance is similar to that of the unpatterned membrane. This observation is consistent with our prior observations that imprinting also appears to affect precompaction of membranes.…”
Section: Resultssupporting
confidence: 93%
See 1 more Smart Citation
“…The imprinted membrane permeance appears to have less variance at all pressures, as well as, at the highest pressure their permeance is similar to that of the unpatterned membrane. This observation is consistent with our prior observations that imprinting also appears to affect precompaction of membranes.…”
Section: Resultssupporting
confidence: 93%
“…The transferred pattern was found to facilitate back mass transfer of retained species resulting in reduced fouling rates and higher critical fluxes. Furthermore, membrane patterning has been exploited for thin film composite (TFC) RO membranes, either by patterning of the UF support, or by direct patterning of a commercial TFC . Notably, in the case of the direct TFC patterning, the combination with a chemical surface modification yielded even more fouling resistance.…”
Section: Introductionmentioning
confidence: 99%
“…Ra (427 nm) of the sample was calculated based on three different positions of the samples, and was lower than the reported ones. 29,30 Other studies 30,31 had shown that a membrane with lower roughness had stronger antifouling abilities. Membrane coating with nano-TiO 2 especially for TFN0.25, would therefore be expected to improve antifouling performance.…”
Section: Morphology Of the Tfn Membranementioning
confidence: 99%
“…For the first time, a patterned superhydrophobic PVDF membrane with porous micropillars was prepared via a micro-molding phase separation (µPS) technique. A similar technique has been used to create macro-patterned surfaces for pressure driven membranes (Çulfaz, Rolevink et al 2010, Çulfaz, Haddad et al 2011, Hashino, Katagiri et al 2011, Won, Lee et al 2012, Jamshidi Gohari, Lau et al 2013, Lee, Won et al 2013, Gençal, Durmaz et al 2015, Maruf, Greenberg et al 2016, Won, Jung et al 2016, ElSherbiny, Khalil et al 2017. However, pressure driven processes only involve a liquid-solid interface with a convective flow of liquid across the membrane.…”
Section: Introductionmentioning
confidence: 99%