Liquid-liquid phase separation in polysulfone/polyethersulfone/N-methyl-2- pyrrolidone/water quaternary system

Baik, Ki Jun; Kim, Je Young; Lee, Hwan Kwang; Kim, Sung Chul

doi:10.1002/(sici)1097-4628(19991128)74:9<2113::aid-app1>3.0.co;2-4

Cited by 30 publications

(3 citation statements)

References 23 publications

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“…In other words, in the solutions containing polymer blend, the phase separation took place with the addition of a lower amount of water as nonsolvent, in comparison with the phase separation in pure polymeric solutions. An almost similar result was previously reported for polyethersulfone (PES)/polyimide/NMP/water 25 and polysulfone (PSf)/PES/NMP/water 26 systems, too. The diagram also shows that with the increase in the concentration of PBS in the blend, the cloud point moved closer to the polymer‐solvent axis.…”

Section: Resultssupporting

confidence: 88%

Biodegradable membrane based on polycaprolactone/polybutylene succinate: Characterization and performance evaluation in wastewater treatment

Sadeghi

Mousavi

Saljoughi

et al. 2020

J of Applied Polymer Sci

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Biodegradable membranes with different compositions of polycaprolactone (PCL) and polybutylene succinate (PBS) are prepared via immersion precipitation. The morphology, hydrophilicity, chemical structure, crystalline structure, mechanical properties, and biodegradability of the membranes are studied to assess the effect of PBS concentration in the polymer blend on membrane properties. Furthermore, the performance of the obtained membranes is assessed through the treatment of wastewater sampled from the chips and snacks factory. Also, membranes' antifouling properties are assessed by filtration of a model foulant. The investigations revealed that the addition of PBS to PCL increases the membrane hydrophilicity and biodegradability. Regarding the results, the PCL membrane blended with 30 wt% PBS has 106%, 26%, and 37% higher pure water flux, flux recovery ratio, and permeate flux, in addition to the higher rejection of pollution indices, in comparison with the PCL membrane.

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Section: Resultssupporting

confidence: 88%

Biodegradable membrane based on polycaprolactone/polybutylene succinate: Characterization and performance evaluation in wastewater treatment

Sadeghi

Mousavi

Saljoughi

et al. 2020

J of Applied Polymer Sci

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“…Therefore, a qualitative estimation on blending was calculated along with the experiment. Specifically, the Flory–Huggins theory was used to understand the polymer blend phase separation for membrane forming or fiber manufacturing [ 23 , 24 , 25 ]. These applications often require the analysis of a ternary or quaternary system.…”

Section: Introductionmentioning

confidence: 99%

Reinforced PEI/PVdF Multicore-Shell Structure Composite Membranes by Phase Prediction on a Ternary Solution

et al. 2018

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To construct a polyetherimide (PEI)-reinforced polyvinylidene fluoride (PVdF) composite membrane with multicore-shell structure, a ternary solution was prepared and electrospun by single-nozzle electrospinning. A theoretical prediction was made for the feasibility of complete distinction of two phases. The diameters of the membrane fibers and the PEI multi-core fibrils varied with the PEI ratio and the spinning time, respectively. The tensile strength and modulus were improved to 48 MPa and 1.5 GPa, respectively. The shrinkage of the membrane was only 6.6% at 180 °C, at which temperature the commercial PE separator melted down. The reinforcement in mechanical and thermal properties is associated with multiple PEI nanofibrils oriented along the fiber axis. Indeed, the unique morphology of self-assembled multicore-shell fibers plays an important role in their properties. All in all, PEI/PVdF membranes are appropriate for a lithium-ion battery application due to their high mechanical strength, excellent thermal stability, and controllable textural properties.

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“…A depth of understanding of the polymer properties, the membrane f o r m a t i o n p r o c e s s , a n d t h e membrane morphology is necessary for improvement of membrane performance. Polyethersulfone (PES) as an engineering plastic has favourable properties for membrane preparation, especially reverse osmosis membranes, owing to its chemical resistance, mechanical strength, and excellent thermal properties [5][6][7][8][9][10] .…”

Section: Introductionmentioning

confidence: 99%

Evaluation of the Morphology and Performance of Polyether Sulfone Reverse Osmosis Composite and Non-composite Membranes

Madaeni

Barzin

Jokar

2009

Polymers and Polymer Composites

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Reverse osmosis membranes were prepared by the phase inversion technique using polyether sulfone (PES) dissolved in dimethylacetamide (DMAc) with and without the addition of polyvinylpyrrolidone (PVP). The effects of the composition of the casting solution on membrane morphology and performance were investigated on the basis of ion removal from treated water. The membrane prepared from 22 wt.% PES demonstrated the best ion rejection. Higher flux was accessible by changing the polymer solution composition to 16 wt.% PES and 2.5 wt.% PVP. For preparation of polyamide composite membranes, the interfacial polymerisation technique was employed. In this procedure, hexamethylenediamine (HMDA) and sebacyl chloride (SC) were reacted with each other on the surface of a membrane support. Synthesis conditions, such as the concentration of monomers and the reaction time, significantly affect the performance of the composite membranes. The permeation rate and ion rejection capability of composite polyamide membranes were 40–80 (L/m2 h) and 28–30% respectively with the initial feed conditions of 400 psi and 25 °C.

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Liquid-liquid phase separation in polysulfone/polyethersulfone/N-methyl-2- pyrrolidone/water quaternary system

Cited by 30 publications

References 23 publications

Biodegradable membrane based on polycaprolactone/polybutylene succinate: Characterization and performance evaluation in wastewater treatment

Biodegradable membrane based on polycaprolactone/polybutylene succinate: Characterization and performance evaluation in wastewater treatment

Reinforced PEI/PVdF Multicore-Shell Structure Composite Membranes by Phase Prediction on a Ternary Solution

Evaluation of the Morphology and Performance of Polyether Sulfone Reverse Osmosis Composite and Non-composite Membranes

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