2016
DOI: 10.1515/polyeng-2015-0419
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Tailoring PES membrane morphology and properties via selected preparation parameters

Abstract: Abstract Polyethersulfone (PES) is among the most interesting materials for membranes preparation, thanks to its outstanding properties, coupled to compatibility with several additives and the facility to be solubilized in several solvents. In this work, flat sheet membranes were prepared by the non-solvent induced phase separation (NIPS) technique, using PES as polymer and polyvinyl pyrrolidone (PVP, 10 kDa) as additive. Preparation and casting conditions were varied and membr… Show more

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Cited by 19 publications
(18 citation statements)
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“…This is in agreement with what generally observed in literature. The presence of macrovoids (as in M3) and the increase of the overall void fraction (as in M2 and M3) represent weak points into the membrane leading to a decrease in membrane mechanical resistance [ 63 ].…”
Section: Resultsmentioning
confidence: 99%
See 1 more Smart Citation
“…This is in agreement with what generally observed in literature. The presence of macrovoids (as in M3) and the increase of the overall void fraction (as in M2 and M3) represent weak points into the membrane leading to a decrease in membrane mechanical resistance [ 63 ].…”
Section: Resultsmentioning
confidence: 99%
“…Increasing the polymer concentration, in fact, a less-porous surface was observed. The reduction of cavities as a consequence of polymer concentration increase is a very well documented phenomenon [ 63 , 70 ]. High polymer concentrations, in fact, slow down the precipitation process of the membrane leading to the formation of a membrane with a denser top layer and lower pore size [ 71 ].…”
Section: Resultsmentioning
confidence: 99%
“…As reported in previous work [33] a typical trade-off between void fraction and mechanical properties was observed. The macrovoids represent, in fact, weak points into the membrane matrix leading to a decrease of its mechanical resistance [34,35].…”
Section: Resultsmentioning
confidence: 99%
“…Figures 11 and 12 show that the nanocomposite membranes represent larger inhibition zones. Figures 11 and 12 illustrated that with the increase in sulfonated graphene oxide concentration, the inhibition zone of bacterial growth increased [6,24]. This is due to the presence of reactive oxygen species like O 2− , H2O2 and OHgenerated by sulfonated graphene oxide, which harms bacterial DNA and is key for its antibacterial activity [34,35].…”
Section: Temperture (°C)mentioning
confidence: 99%
“…From water, the separation of organic materials, bacteria, suspended particles, colloidal particles and proteins is effectively performed through ultrafiltration (UF) membranes [5]. The membrane's performance depends on the membrane material, permeability, hydrophilicity, surface charge, thickness and pore size including operation conditions, such as filtration time, pressure and feed solution concentration [6]. Polymer material is considered an excellent material for membrane fabrication due to extraordinary properties like high chemical tolerance, mechanical strength and thermal stability.…”
Section: Introductionmentioning
confidence: 99%