Formation of interfiber bonding in electrospun poly(etherimide) nanofiber web

Choi, Sung Seen; Lee, Seung Goo; Joo, Chang Whan; Im, Seung Soon; Kim, Seong Hun

doi:10.1023/b:jmsc.0000013931.84760.b0

Cited by 70 publications

(29 citation statements)

References 6 publications

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“…% of PEI in 1-methyl-2-pyrrolidinone (NMP), fibers were collected on a rotating cylindrical drum. [40] studied interfacial bonding between PEI electrospun fiberwebs with respect to thermal treatment and observed interfiber bonding at 240 • C which substantially enhanced mechanical strengths of the fibers.…”

Section: Introductionmentioning

confidence: 99%

Effects of Surfactants on the Morphology and Properties of Electrospun Polyetherimide Fibers

Abutaleb

Lolla

Aljuhani³

et al. 2017

Fibers

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Electrospun fibers often have beads as byproducts. Bead formation can be substantially minimized by the introduction of additives, such as ionic salts or surfactants, to the electrospinning polymeric solution. Polyetherimide (PEI) fibers were fabricated using electrospinning. Four different additives, Lithium Chloride (LiCl), Sodium Chloride (NaCl), Triton X-100 and Hexadecyltrimethylammonium Bromide (HTAB) were utilized to alter the polymer solution electrical conductivity and surface tensions. The effects of solution conductivity and surface tension on the electrospinning and the thermal, mechanical stability of the polymeric fibers were investigated. Morphology, thermal properties, permeability and mechanical strength of the fiber mats were investigated using Scanning Electron Microscopy (SEM), Thermogravimetric Analysis (TGA), Frazier Permeability Test, and Tensile tester respectively. The addition of 1.5wt.% HTAB was found to be the optimum concentration to produce PEI fibers without beads. The addition of HTAB produced fiber mats with higher air permeability, higher thermal stability and higher mechanical strength in comparison to the other additives. Finally, a filtration test was conducted on a simple custom model to compare the performance of beaded and non-beaded PEI fiber mats. The non-beaded PEI fiber mat performed better in terms of both separation efficiency (%E) and differential pressure drop (∆P) separating water droplets from diesel fuel.

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Section: Introductionmentioning

confidence: 99%

Effects of Surfactants on the Morphology and Properties of Electrospun Polyetherimide Fibers

Abutaleb

Lolla

Aljuhani³

et al. 2017

Fibers

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“…Thermal treatment at a temperature above glass transition temperature and just below melting temperature of the polymeric nanofibers is a well-known approach to strengthen a nanofibrous mat [8]. Different from such a successful technique, we benefited heating in extracting residual solvent from within the nanofibers.…”

Section: Introductionmentioning

confidence: 99%

The solvent induced interfiber adhesion and its influence on the mechanical and filtration properties of polyethersulfone electrospun nanofibrous microfiltration membranes

Homaeigohar¹,

Koll²,

Lilleodden

et al. 2012

Separation and Purification Technology

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Electrospun nanofibrous membranes (ENMs) as a novel class of energy saving membranes are under extensive investigation. This kind of membranes are highly porous and permeable however mechanically weak. In the current study, we benefited the residual solvent of the electrospun nanofibers to induce an interfiber adhesion through a thermal treatment. This approach was successful in enhancement of the mechanical properties of the electrospun nanofibrous membrane probed via tensile test and nanoindentation as a higher elastic modulus and compaction resistance, respectively. The mechanically stronger membrane possesses a higher resistance against tensile disintegration thereby a lower water flux at high feed pressures.Through a particle challenge test i.e. filtration of a TiO 2 aqueous nanosuspension under an incremental feed pressure of 1-2 bar, we could also show that a mechanically resistant ENM can offer a more optimum filtration efficiency mainly due to its higher structural integration.

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“…Some of them are high long-term heat resistance, excellent dimensional stability, exceptional strength and modulus at elevated temperatures, good electrical insulation, and stable dielectric constant. Therefore, many researchers have investigated PEI in many studies on electrospinning (Choi, Lee, Joo, Im, & Kim, 2004;Koombhongse, Liu, & Reneker, 2001;Moon, Choi, & Farris, 2008;Scarlet et al, 2012).…”

Section: Introductionmentioning

confidence: 99%

Interaction between effects of ambient parameters and those of other important parameters on electrospinning of PEI/NMP solution

Oğulata

Içoğlu

2014

The Journal of The Textile Institute

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By electrospinning method, fibers are produced with diameters ranging from hundred nanometers up to a few micrometers. In this study, the influence of ambient temperature and relative humidity on the morphology of electrospun polyetherimide (PEI) fibers at varying electrospinning parameters such as solution concentration, applied voltage, and tip-to-collector distance was investigated. 1-methyl-2-pyrrolidinone was used as a solvent for PEI. Morphology and diameter of electrospun PEI fibers were examined by field-emission scanning electron microscopy. It was seen that 20 wt% of the PEI solution shows the most increase in average diameters from 30 to 70% RH at 15, 25, and 35°C. It was also seen that 20 wt% of the PEI solution shows the most decrease in average diameters from 15 to 35°C at each of the RH values. An interesting result was observed for 12 cm of tip-to-collector distance. The average fiber diameters firstly decreased from 15 to 25°C, and then increased from 25 to 35°C for all of the RH values.

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Formation of interfiber bonding in electrospun poly(etherimide) nanofiber web

Cited by 70 publications

References 6 publications

Effects of Surfactants on the Morphology and Properties of Electrospun Polyetherimide Fibers

Effects of Surfactants on the Morphology and Properties of Electrospun Polyetherimide Fibers

The solvent induced interfiber adhesion and its influence on the mechanical and filtration properties of polyethersulfone electrospun nanofibrous microfiltration membranes

Interaction between effects of ambient parameters and those of other important parameters on electrospinning of PEI/NMP solution

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