High flux ultrafiltration membranes based on electrospun nanofibrous PAN scaffolds and chitosan coating

Yoon, Kyung Hoon; Kim, Kwangsok; Wang, Xuefen; Fang, Dufei; Hsiao, Benjamin S.; Chu, Benjamin

doi:10.1016/j.polymer.2006.01.042

Cited by 504 publications

(271 citation statements)

References 21 publications

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“…It is the effect of φ p and M where φ p is volume fraction and M is weight average molecular weight. The entanglement can be quantified with entanglement number in solution, (n e ) soln = (φ p M w /M e ) using ρ = 1.05 g/cm 3 and M e = 16 600 g/mol. SEM images of PS fibers electrospun from four solutions of different weight fractions are presented in Figure 1.…”

Section: Resultsmentioning

confidence: 99%

“…In this work, we have verified this phenomenon by microscopic observations on electrospun PS fibers and quantified the skin thickness with respect to average fiber diameter (AFD). A nonwoven fiber mat having a high surface area to volume ratio on the order of 1-100 m 2 /g is achieved by electrospinning, which offers numerous existing and potential applications in filtration [3], catalysis [4,5], and tissue engineering [6]. The surface area of the mats can be further enlarged when surface and/or interior porosity is developed within the electrospun filaments [7,8].…”

Section: Introductionmentioning

confidence: 99%

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Investigation on glassy skin formation of porous polystyrene fibers electrospun from DMF

Demir¹

2010

Express Polym. Lett.

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Abstract. Micrometer and submicrometer diameter of polystyrene (PS) fibers were electrospun from various dimethyl formamide (DMF) solutions at different weight fractions under 35% relative humidity. Increasing polymer fraction in the solution results in a gradual morphological transition from beads-with-incipient to bead-free fibers and also increases the diameter. The formation of uniform glassy skin presumably due to radial capillary flow within the liquid jet was confirmed by scanning electron microscope. The thickness of the skin varies with the weight fraction of PS; therefore, it was normalized with respect to average fiber diameter (AFD). The skin gets thinner as the weight fraction of PS increases. In addition, the fibers exhibit highly porous internal structure and smooth surface along with slight porosity. The development of porosity is attributed to liquid-liquid phase separation of water molecules in atmospheric moisture and DMF.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Investigation on glassy skin formation of porous polystyrene fibers electrospun from DMF

Demir¹

2010

Express Polym. Lett.

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“…Electrospun fiber membranes have gained popularity in separations applications as micro-and ultrafiltration media since the late 1990s [6][7][8][9][10][11][12][13][14][15][16][17][18]. This popularity is due to the small diameter fibers produced by electrospinning, with fiber diameters down to ~10 nm, which results in high specific surface areas (~100 m 2 /g) [19].…”

Section: Introductionmentioning

confidence: 99%

Separation of oil-in-water emulsions using electrospun fiber membranes and modeling of the fouling mechanism

Choong

Lin

Rutledge

2015

Journal of Membrane Science

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“…All the membranes showed complete removal of the bacteria by size exclusion. The coating of chitosan on electrospun PAN enhanced the filtration efficiency and rejection for both ultrafiltration and nanofiltration processes [259]. The membrane displayed a rejection of 99% due to the inherited hydrophilicity of chitosan.…”

Section: Filtration Membranementioning

confidence: 98%

A review on electrospun bio-based polymers for water treatment

Mokhena¹,

Jacobs²,

Luyt³

2015

Express Polym. Lett.

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Abstract. Over the past decades, electrospinning of biopolymers down to nanoscale garnered much interest to address most of the millennia issues related to water treatment. The fabrication of these nanostructured membranes added a new dimension to the current nanotechnologies where a wide range of materials can be processed to their nanosize. Electrospinning is a simple and versatile technique to fabricate unique nanostructured membranes with fascinating properties for a wide spectrum of applications such as filtration and others. These nanostructured membranes, fabricated by electrospinning, were found to be of a paramount importance because of their advanced inherited properties such as large surface-to-volume ratio, as well as tuneable porosity, stability, and high permeability. The extensive research conducted on these materials extended the success of electrospinning not only to bio-based polymer nanofibres, but to their hybrids and their derivatives. The technique also created avenues for advanced and massive production of nanofibres. This paper reviews the recent developments in the electrospinning technique. Electrospinning of biopolymers, their blends and functionalization using metals/metal oxides, and the potential applications of electrospun nanofibrous membranes in water filtration are discussed.

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High flux ultrafiltration membranes based on electrospun nanofibrous PAN scaffolds and chitosan coating

Cited by 504 publications

References 21 publications

Investigation on glassy skin formation of porous polystyrene fibers electrospun from DMF

Investigation on glassy skin formation of porous polystyrene fibers electrospun from DMF

Separation of oil-in-water emulsions using electrospun fiber membranes and modeling of the fouling mechanism

A review on electrospun bio-based polymers for water treatment

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