Characterization of morphology controlled polyethersulfone hollow fiber membranes by the addition of polyethylene glycol to the dope and bore liquid solution

Liu, Y; Koops, G.H.; Strathmann, H.

doi:10.1016/s0376-7388(03)00322-3

Cited by 235 publications

(130 citation statements)

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“…Furthermore, PEG helps to provide a hydrophilic character to the resulting membrane, and increases in the additive concentration directly affect permeation flux and rejection rate. [1][2][3][4] PET is used as a packaging material for containers and in the production of synthetic fibers. In this study, waste PET was used as-received without determining the polymer molecular weight distribution as this study aimed to recycle this material.…”

Section: Introductionmentioning

confidence: 99%

“…The PEG concentration ranged from 10 to 30 wt% in the casting solution, and the average Mw was from 200 Da to 600 Da. [2][3][4] In addition, the PET membranes with PEG additives of different molecular weights were characterized by considering solute transport data, for which a sieving curve was obtained by plotting solute retention versus mass for each PET-UF membrane.…”

Section: Introductionmentioning

confidence: 99%

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Ultrafiltration Membranes From Waste Polyethylene Terephthalate and Additives: Synthesis and Characterization

Rajesh¹,

Murthy²

2014

Química Nova

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The synthesis and characterization of asymmetric ultrafiltration membranes from recycled polyethylene terephthalate (PET) and polyvinylpyrrolidone (PVP) is reported. PET is currently used in many applications, including the manufacture of bottles and tableware. Monomer extraction from waste PET is expensive, and this process has not yet been successfully demonstrated on a viable scale. Hence, any method to recycle or regenerate PET once it has been used is of significant importance from scientific and environmental research viewpoints. Such a process would be a green alternative due to reduced raw monomer consumption and the additional benefit of reduced manufacturing costs. The membranes described here were prepared by a phase-inversion process, which involved casting a solution containing PET, m-cresol as solvent, and polyethylene glycol (PEG) of different molecular weights as additives. The membranes were characterized in terms of pure water permeability (PWP), molecular weight cut-off (MWCO), and flux and membrane morphology. The results show that the addition of PEG with high molecular weights leads to membranes with higher PWP. The presence of additives affects surface roughness and membrane morphology.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Ultrafiltration Membranes From Waste Polyethylene Terephthalate and Additives: Synthesis and Characterization

Rajesh¹,

Murthy²

2014

Química Nova

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“…The hydrophobic caharacter of PES polymer has driven modification of PES membrane. Three different approaches have been developed to increase the hydrophilicity of PES membranes, namely (i) modification of polymer membranes (pre-modification) [9] (ii) mixing the polymer membranes with additives [10][11] and (iii) modification of the surface after membrane preparation (post-modification) [12]. However, each approach has drawbacks such as takes a long time, stability of additives in the polymer matrix is low, and also some treatments can cause changes in membrane structure.…”

Section: Introductionmentioning

confidence: 99%

Preparation of Low fouling Polyethersulfone Membranes by Simultaneously Phase Separation and Redox Polymerization

Roihatin¹,

Susanto

2017

IOP Conf. Ser.: Mater. Sci. Eng.

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Characterization of Polydopamine-Coated Polyethersulfone (PES) membrane for water purification Syawaliah, S Mulyati, Muzaitun et al. Abstract. This paper presents preparation of low fouling PES membranes by non solvent induced phase separation (NIPS) coupled with redox polymerization.The membrane characterization included water permeability, morphology structure (by SEM) and surface chemistry (by FTIR).Water permeability measurements showed thatthe membranes have water permeability within the range 10-50 L/h.m 2 .bar. Addition of PEG dan PEGMA intopolymer solution increased water permeability, whereas blending redox initiator and crosslinker, MBAA in polymer solution decreased water permeability.Surface morfology of membranes by SEM showed that unmodified PES membrane had smaller pore size than PEG or PEGMA modified PES membranes. Furthermore, PES-PEG or PES-PEGMA membranes modified by blending with redox initiator and MBAA as crosslinker showed smaller pore size than unmodified membrane. FTIR analysis showed that all membranes have typical spectraof PES polymer;however no additional peak was observed forthe membranes prepared with addition of PEG/PEGMA, initiator redox and also crosslinker. The addition of PEG/PEGMA, redox initiator and crosslinker resulted in membranes with high rejection and an acceptable flux as well as more stable due to relatively high fouling resistance.

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“…The final membrane structure depends on several experimental parameters: the composition of polymer solution (additives, solvent, concentration), temperature, etc. In general, additives, with low molecular weight, are used in order to affect the morphology of the membrane or as pore former such as polyvinyli pyrrolidone (PVP), polyethylene glycol (PEG), maleic acid [4][5][6][7]. However, a large number of additives with polymers that can possibly be used remain unexplored.…”

Section: Introductionmentioning

confidence: 99%

Surface Modification of PEEK-WC Membranes by Wet Phase Inversion for Ni(II) Adsorption

Bey¹,

Zakaria²,

Drioli³

2013

AJAC

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This work focuses on the preparation and characterization of flat sheet membrane based on modified polyether ether keetone (PEEK-WC). Additives, such as dibutyl phatalate (DBP) and diethyl hexyl phosphoric acid (DEHPA), were used to investigate their effect on membranes properties which are prepared by immersion precipitation. For that, several techniques were used to characterize membranes like thermal analyses, scanning electron microscopy and microanalyses. SEM pictures show versatile structures of the membranes from dense to porous membranes characterized by a sponge and finger like structure. Moreover, microanalyses of both surfaces, bottom and top surfaces show an aggregation of DEHPA at the top surface of the membrane. However, by adding dibutylphtalate, a well dispersion of the extractant was observed. Initially, micro-porous membranes were used in supported liquid membranes experiments for Ni(II) metal ions transports using diethyl hexyl phosphoric acid (DEHPA) as carrier. The extraction efficiency was very low about 28%, but enhanced by adding xylene to the organic phase. However, the modified membranes (with additives) by DBP and DEHPA were used on solid liquid extraction of Ni(II). The results show that by adding the plasticizer and the extractant, the efficiency of the system reached 63%.

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Characterization of morphology controlled polyethersulfone hollow fiber membranes by the addition of polyethylene glycol to the dope and bore liquid solution

Cited by 235 publications

References 18 publications

Ultrafiltration Membranes From Waste Polyethylene Terephthalate and Additives: Synthesis and Characterization

Ultrafiltration Membranes From Waste Polyethylene Terephthalate and Additives: Synthesis and Characterization

Preparation of Low fouling Polyethersulfone Membranes by Simultaneously Phase Separation and Redox Polymerization

Surface Modification of PEEK-WC Membranes by Wet Phase Inversion for Ni(II) Adsorption

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