Effect of PVP, lithium chloride, and glycerol additives on PVDF dual-layer hollow fiber membranes fabricated using simultaneous spinning of TIPS and NIPS

Lee, Jinwon; Park, Bum-Jin; Kim, Jong-Pyo; Park, Seung Bin

doi:10.1007/s13233-015-3037-x

Cited by 64 publications

(28 citation statements)

References 36 publications

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“…Fabrication of membranes with high PVP conc. exhibits porous structure with wider finger like macro voids and shows high permeation flux [86,[96][97][98][99][100][101][102][103].…”

Section: Role Of Additives In Membrane Fabricationmentioning

confidence: 99%

A Comprehensive Review on Polymeric Nano-Composite Membranes for Water Treatment

Zahid¹,

Rashid²,

Akram³

et al. 2018

J Membr Sci Technol

175

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During last few decades, membrane technology has emerged as an efficient technique over conventional methods due to its high removal capacity, ease in operation and cost effectiveness for wastewater treatment and production of clean water. Membrane based separations are commonly based on polymeric membranes because of their higher flexibility, easily pore forming mechanism, low cost and smaller space for installation as compared to inorganic membranes. Commonly employed membrane fabrication phase inversion method has been shortly reviewed in this article. Major limitation of membrane based separations is fouling and polymeric membranes being hydrophobic in nature are more prone to fouling. Fouling is a deposition of various colloidal particles, macromolecules (polysaccharides, proteins), salts etc. on membrane surface and within pores thus impedes membrane performance, reduces flux and results in high cost. Modification of polymeric membranes due to its tailoring ability with nanomaterials such as metal based and carbon based results in polymeric nano-composite membranes with high antifouling characteristics. Nanomaterials impart high selectivity, permeability, hydrophilicity, thermal stability, mechanical strength, and antibacterial properties to polymeric membranes via blending, coating etc. modification methods. Characterization techniques has also discussed in later section for studying morphological properties and performance of polymer nano-composite membranes. Graphical Abstract

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“…Fabrication of membranes with high PVP conc. exhibits porous structure with wider finger like macro voids and shows high permeation flux [86,[96][97][98][99][100][101][102][103].…”

Section: Role Of Additives In Membrane Fabricationmentioning

confidence: 99%

A Comprehensive Review on Polymeric Nano-Composite Membranes for Water Treatment

Zahid¹,

Rashid²,

Akram³

et al. 2018

J Membr Sci Technol

175

View full text Add to dashboard Cite

show abstract

“…The NIPS effect can be controlled by changing the coagulation bath but it is not feasible on the large scale as a significant amount of solvent is required. A more practical and widely practiced method is to control the polymer concentration [47] and coagulation temperature [50], and to employ additives [50][51][52]. Fig.…”

Section: Effect Of the Concentration And Temperature On Pvdf/polarclementioning

confidence: 99%

“…Such a dense skin layer is an inevitable outcome from the high PolarClean s affinity towards water, resulting in a thin solidified layer during immersion precipitation. As the main objective of this work was to fabricate microporous membranes using an environmental friendly solvent and one of the effective ways to generate surface pores is to employ poreforming additives [50][51][52], we evaluated three different sets of additives in this study: Pluronics F-127, PVP 10k, and LiCl & glycerol, in an attempt to fabricate microporous membranes. The Pluronics F-127 additive is gaining wide interest among membrane researchers with its excellent pore forming ability and unique amphiphilic properties [59].…”

Section: Morphology Control In Pvdf/polarclean S Membranes With Additmentioning

confidence: 99%

“…Hassankiadeh et al, [29] investigated the effects of various additives on PVDF/PolarClean s hollow fiber membranes and concluded that PVP showed the highest performance improvement. Lee et al [52] employed a mixture of LiCl and glycerol in PVDF/GBL hollow fiber membranes which showed a significant flux enhancement with a slight decline of the mechanical properties. For all of the prepared membranes with additives, the polymer concentration was fixed at 15 wt% as it exhibited the highest porosity with mechanical properties comparable to the 20 wt% membranes.…”

Section: Morphology Control In Pvdf/polarclean S Membranes With Additmentioning

confidence: 99%

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Understanding the non-solvent induced phase separation (NIPS) effect during the fabrication of microporous PVDF membranes via thermally induced phase separation (TIPS)

Jung

Kim

Wang

et al. 2016

Journal of Membrane Science

373

179

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“…More recently, a new method combining the advantages of NIPS and TIPS (N‐TIPS) has been reported by several researchers. This emerging method deserves special attention as it may allow fabrication of highly porous skin layers with mechanically robust supports . In this review, we assess the current understanding of membrane fabrication knowledge with a particular focus on controlling the membrane morphology and surface chemistry using the TIPS and electrospinning methods for potential application in membrane contactor applications.…”

Section: Introduction: Current Membrane Technology Statusmentioning

confidence: 99%

Thermally induced phase separation and electrospinning methods for emerging membrane applications: A review

et al. 2015

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In this review, thermally induced phase separation (TIPS) and electrospinning methods for preparation of fluoropolymer membranes are assessed, particularly for the polyvinylidene fluoride (PVDF) and polyethylene chlorotrifluoroethylene membranes. This review focuses on controlling the membrane morphology from the thermodynamic and kinetic perspectives to understand the relationship between the membrane morphology and fabrication parameters. In addition, the current status of the nonsolvent induced phase separation (NIPS) method and the combined NIPS-TIPS (N-TIPS) method, which is a new emerging fabrication method, are discussed. The past literature data are compiled and an upperbound curve (permeability vs. tensile strength) is proposed for the TIPS-prepared PVDF membranes. Furthermore, the key parameters that control and determine the membrane morphology when using the electrospinning method are reviewed. Exploiting the unique advantages of the electrospinning method, our current understanding in controlling and finetuning the PVDF crystal polymorphism (i.e., b-phase) is critically assessed. V C 2015 American Institute of Chemical Engineers AIChE J, 62: 461-490, 2016 Figure 15. Cross section of 40 wt % PVDF/GBL hollow fiber membranes: (left) with LiCl additive, (middle) with glycerol additive, (right) with LiCl and glycerol additives.Formation of such fine pores nearly doubled the flux without losing mechanical strength. 28 481 TEM images of 4 wt % PVP nanofibers from different compositions of EtOH/DMF: (b) 65/35, (c) 50/50, (d) 35/65, and (e) SEM image of 4 wt % PVP nanofibers using EtOH/DMF (50/50). 146 482

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Effect of PVP, lithium chloride, and glycerol additives on PVDF dual-layer hollow fiber membranes fabricated using simultaneous spinning of TIPS and NIPS

Cited by 64 publications

References 36 publications

A Comprehensive Review on Polymeric Nano-Composite Membranes for Water Treatment

A Comprehensive Review on Polymeric Nano-Composite Membranes for Water Treatment

Understanding the non-solvent induced phase separation (NIPS) effect during the fabrication of microporous PVDF membranes via thermally induced phase separation (TIPS)

Thermally induced phase separation and electrospinning methods for emerging membrane applications: A review

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