Concept of minimum electrospinning voltage (MEV) in electrospinning of PAN–DMF system: effect of distance

Basu, Sandip; Jassal, Manjeet; Agrawal, Ashwini K.

doi:10.1080/00405000.2012.703797

Cited by 11 publications

(16 citation statements)

References 13 publications

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“…Early drying of the polymer jet may be the reason for the increase in average diameter and bead formation at a distance of 20 cm. At the same time the distance tends to change the areal density due to the variation of the spread of fibers [26]. Figure 8 is given for the comparison of variation of Water contact angles are useful for the determination of wettability of polymer materials.…”

Section: Variation In Needle Tip-collector Distancementioning

confidence: 99%

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A facile approach for the preparation of polycarbonate nanofiber mat with filtration capability

et al. 2020

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The present day environmental issues demand a lot from scientists and engineers to keep the planet earth safe for its habitats. There were lot of attempts for developing efficient air and liquid filters as the demand increases with an utmost concern of present environmental situations. Thanks to its large surface area to volume ratio, polymer nanofibers and composites are found to be good substitute for conventional filters. As per the research and analysis data, filtration efficiency increases proportional to the reduction of the average diameter of the fibers. In this study, the most efficient electrospinning technology was adopted to prepare polycarbonate (PC) nanofiber mat which yields a very fine surface morphology. There are earlier researches and associated data available about the preparation of PC nanofibers but with average fiber diameter above 1000 nm. In this study, a systematic methodology was instigated to generate PC nanofibers with least average diameter of 90 nm without using any surfactants or salts. The most suitable solvents, solvent proportion, polymer concentration and electrospinning conditions for the formation of the fiber mat are discussed elaborately. PC fiber mat of least average diameter was proved to be highly efficient for particulate matter adsorption using a dust sampling analyzer.

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Section: Variation In Needle Tip-collector Distancementioning

confidence: 99%

“…There are various reports on the deviation of the average diameter of the electrospun fibers by the variation of the applied electric current. The minimum electron volt required for the deposition of ultrafine fibers during electrospinning is directly related to the needle tip-collection plate distance [26][27][28][29].…”

Section: Introductionmentioning

confidence: 99%

A facile approach for the preparation of polycarbonate nanofiber mat with filtration capability

et al. 2020

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“…MEV was determined as per the reported method. 5 The electrospinning was carried out using an infusion syringe pump (KDS 100 from KD Scientic, Massachusetts USA) with a at tip needle (inner diameter of 0.84 mm) as the spinning head and 40 kV high voltage supply (DES 40 PN from Gamma high voltage, Florida, USA). The distance from the tip of the needle to the collector was kept as 15 cm and a ow rate of 0.25 ml h À1 was used.…”

Section: Electrospinningmentioning

confidence: 99%

“…The electrospinning of control PVA (14% w/w) was smooth and continuous. Our group has recently reported the inuence of polymer elasticity and other electrospinning parameters such as spinning distance and ow rate on morphology of nanobres based on PAN/DMF 3,5,26,27 and PVA/water systems. 4 It was found that when PVA was electrospun at MEV, the diameter of the nanobres did not change signicantly with either the spinning distance or the ow rate.…”

Section: Electrospinning Of Composite Nanobres Loaded With Ps/od Nan...mentioning

confidence: 99%

“…Electrospinning provides a simple, straightforward, cheap and unique approach for the production of polymeric nanobres in the range of 1000 nm or less. [1][2][3][4][5] The advantages of electrospinning include production of ultrathin bres with large surface area and superior properties. [6][7][8][9] These outstanding properties have made electrospun webs promising candidates for various applications.…”

Section: Introductionmentioning

confidence: 99%

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Electrospun composite nanofibres of PVA loaded with nanoencapsulated n-octadecane

et al. 2015

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In this study composite nanofibres of PVA consisting of polystyrene/n-octadecane nanocapsules were prepared. The n-octadecane present as a core of the nanocapsules acts as a phase change material (PCM) for thermal storage properties. Controlled size nanoencapsulated PCMs were prepared by surfactant free RAFT miniemulsion polymerization of styrene. These nanocapsules were incorporated into nanofibres by electrospinning a mixture of nanocapsule latex containing octadecane as a core and polystyrene (PS) as a shell material with an aqueous solution of poly(vinyl alcohol). The morphology and thermal properties of the resultant PVA nanofibres were studied by field emission scanning microscopy (FE-SEM), scanning transmission electron microscopy (STEM), high resolution transmission electron microscopy (HRTEM) and differential scanning calorimetry (DSC). The composite nanofibres could show a latent heat storage capacity of approx. 4-5 J g À1 . This method offers the opportunity to produce low diameter composite nanofibres with uniform dispersion of encapsulated material for various applications.

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Synergistic Effect of Polyurethane in Polyurethane–Poly(vinylidene fluoride) Nanofiber-Based Stretchable Piezoelectric Nanogenerators (S-PENGs)

Kaur

Meena

Jassal

et al. 2022

ACS Appl. Polym. Mater.

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Poly(vinylidene fluoride) (PVDF)-based piezoelectric nanogenerators, though flexible, exhibit poor stretchability and mechanical stability. This limits their application for harvesting energy from repeated deformations arising from human articular motions. Herein, we propose a simple and cost-effective approach to overcome the above issues while simultaneously enhancing the piezoelectric effect of PVDF by mixing a small amount of polyurethane (PU) in PVDF–PU nanofibers. The presence of PU in PVDF could enhance electroactive phases by up to 46%, as measured by Fourier transform infrared (FTIR) spectroscopy. Interestingly, an addition of 21% of PU in PVDF exhibited both an increase in the d 33 value from 3.02 to 7.064 pm/V and stretchability to 90%. For developing a stretchable piezoelectric nanogenerator (S-PENG) device, stretchable electrodes with a 4.5 gauge factor at 100% strain were fabricated by spin-coating of poly(3,4-ethylenedioxythiophene) poly(styrene sulfonate) (PEDOT:PSS):graphene nanoplates on a prestrained PU substrate. S-PENG produced 3.8 V, 0.65 μA, and 0.48 μW/cm2 peak open-circuit voltage, short-circuit current, and power density during cyclic deformation, respectively, with electrical and mechanical stability for at least 2000 cycles. Its performance was demonstrated for various human articular motions related to the knee, elbow, and foot by integrating it with wearables. The generated energy from the S-PENG could readily charge capacitors up to ∼650 mV in just 100 s. The designed S-PENGs showed great potential in harvesting energy from simple human motions.

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Concept of minimum electrospinning voltage (MEV) in electrospinning of PAN–DMF system: effect of distance

Cited by 11 publications

References 13 publications

A facile approach for the preparation of polycarbonate nanofiber mat with filtration capability

A facile approach for the preparation of polycarbonate nanofiber mat with filtration capability

Electrospun composite nanofibres of PVA loaded with nanoencapsulated n-octadecane

Synergistic Effect of Polyurethane in Polyurethane–Poly(vinylidene fluoride) Nanofiber-Based Stretchable Piezoelectric Nanogenerators (S-PENGs)

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