Post-treatment effect on morphology and performance of polyurethane-based hollow fiber membranes through melt-spinning method

Liu, Hailiang; Xiao, Changfa; Hu, Xiaoyu; Liu, Meitian

doi:10.1016/j.memsci.2012.10.002

Cited by 27 publications

(12 citation statements)

References 19 publications

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“…The authors concluded that both skin layers of HF became dense from heat treatment. The same results were reported by Tsai et al [ 10 , 11 ]. Ani et al fabricated PES/LiBr HF membranes and post-treated them with a hot water bath.…”

Section: Introductionsupporting

confidence: 90%

Effect of Dope Flow Rate and Post-Treatment on the Morphology, Permeation and Metal Ion Rejection from PES/LiBr-Based UF Hollow Fiber Membranes

Irfan

Idris

et al. 2022

Membranes

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This study investigated the influence of dope extrusion rate (DER) and post-treatment effect on the morphology, permeation, and metal ion rejection by polyethersulfone/lithium bromide (PES/LiBr)-based hollow fiber (HF) membranes. HF fibers were spun with 2.25, 2.5, and 3.1 ratios of DER to bore fluid rate (BFR), wherein DER varied from 11.35, 12.5, to 15.6 mL/min with a fixed BFR (5 mL/min). Molecular weight cutoff (MWCO), pore size, water flux, and flux recovery ratio were determined, whereas lake water was used to observe the rejection rate of dissolved metallic ions. Results showed that with the increase of the DER wall thickness (WT), HFs increased from 401.5 to 419.5 um, and furthermore by the post-treatments up to 548.2 um, as confirmed by field emission scanning electron microscope (FESEM) analysis. Moreover, MWCO, pore size, and the pure water permeation (PWP) of the HF membranes decreased, while the separation performance for polyethylene glycol (PEG) solute increased with increasing DER. Post-treated HFs from 11.35 mL/min of DER showed 93.8% of MWCO value with up to 90% and 70% rejection of the arsenic and chromium metallic ions, respectively, in comparison with all other formulated HFs.

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Section: Introductionsupporting

confidence: 90%

Effect of Dope Flow Rate and Post-Treatment on the Morphology, Permeation and Metal Ion Rejection from PES/LiBr-Based UF Hollow Fiber Membranes

Irfan

Idris

et al. 2022

Membranes

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“…Porous membranes have also been prepared using numerous methods including nonsolvent‐induced phase separation (NIPS) and melt‐spinning and cold‐stretching (MSCS) . The thermally induced phase separation (TIPS) process is facile , uses easily controlled parameters, is efficient in controlling the final pore size, and can produce both isotropic and anisotropic structures .…”

Section: Type Of Separatorsmentioning

confidence: 99%

Separator Membranes for High Energy‐Density Batteries

et al. 2018

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Rechargeable lithium-ion, lithium-sulfur, zinc-air, and redox-flow batteries are the most anticipated multipurpose platforms for future generations of electric vehicles, consumer devices, and portable electronics because of their high-energy density and cost-effective electrochemical energy storage. Over the past decades, a variety of novel separator membranes and electrolytes have been developed to improve rechargeable battery performance while not thoroughly addressing the issue of flammability, safety, and low cycling stability of high-energy-density batteries. This comprehensive review mainly underlines the optimization and modification of porous membranes for battery separator applications, covering four significant types: microporous separators, nonwoven mat separators, polymer electrolyte membranes, and composite membrane separators. Furthermore, the present trends in material selection for batteries are reviewed, and different choices of cathode, anode, separator, and electrolyte materials are discussed, which will also serve as key components to boost the development of next-generation rechargeable batteries.

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“…Consequently, the fibrous membrane made from the copolymer with more BA chain segments had a compact inner structure. In order to analyze the relationship between morphology and porosity, we adopted a gravimetric method [42,43] to calculate the fibrous membranes' porosity. As Fig.…”

Section: Porositymentioning

confidence: 99%

The structure and property evaluation of electrospun porous fibrous membrane based on the copolymer of styrene and butyl acrylate

Cao

2015

J Porous Mater

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The oils leaked into water seriously threaten human health, thus it is urgent for scientific researchers to treat the pollution caused by oils. In this work, poly (styrene-co-butyl acrylate)-based fibrous membranes which were able to absorb and separate oils from water were prepared via electrospinning. Their thermal properties and crystallization behaviors were characterized by thermogravimetric analyzer, differential scanning calorimetry, and X-ray diffractometer. Field emission scanning electron microscopy was employed to observe their pores, and a gravimetric method was adopted to calculate their porosity. Water contact angle in air and oil contact angle in water were used to describe the hydrophobicity of the prepared fibrous membranes. Finally, the fibrous membranes were applied to the fields of oils absorption and separation. The results showed that the absorbencies of the fibrous membranes for unmoving pure oil were higher than 50 g/g, and the maximum absorbency even reached 91 g/g; additionally, the fibrous membranes also absorbed moving oil from the mixture of oil and water. The floating oil was completely separated from water by the used fibrous membrane after separation apparatus ran for 100 min.

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Post-treatment effect on morphology and performance of polyurethane-based hollow fiber membranes through melt-spinning method

Cited by 27 publications

References 19 publications

Effect of Dope Flow Rate and Post-Treatment on the Morphology, Permeation and Metal Ion Rejection from PES/LiBr-Based UF Hollow Fiber Membranes

Effect of Dope Flow Rate and Post-Treatment on the Morphology, Permeation and Metal Ion Rejection from PES/LiBr-Based UF Hollow Fiber Membranes

Separator Membranes for High Energy‐Density Batteries

The structure and property evaluation of electrospun porous fibrous membrane based on the copolymer of styrene and butyl acrylate

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