Effect of LiCl on electrospinning of PAN polymer solution: theoretical analysis and experimental verification

Qin, Xiaohong; Wan, Yuqin; He, Ji‐Huan; Zhang, Juan; Yu, Jianyong; Wang, Shanyuan

doi:10.1016/j.polymer.2004.06.031

Cited by 106 publications

(61 citation statements)

References 14 publications

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“…The formation of thin fibers is mainly achieved by the stretching and acceleration of the jets promoted by the high electric field [16,23]. High applied voltage will result in higher charge density on the surface of the ejected jets, thus the jet velocity increases and higher elongation forces are imposed to the jet.…”

Section: Resultsmentioning

confidence: 99%

Fiber average size and distribution dependence on the electrospinning parameters of poly(vinylidene fluoride–trifluoroethylene) membranes for biomedical applications

et al. 2012

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Poly(vinylidene fluoride-trifluoethylene), P(VDF-TrFE), electrospun membranes were obtained from a mixture of dimethylformamide (DMF) and methylethylketone (MEK) solvents. The inclusion of MEK to the solvent system promotes a faster solvent evaporation allowing complete polymer crystallization during the jet travelling between the tip and the grounded collector.The main electrospinning processing parameters were systematically changed to study their influence on fiber dimensions and distribution. Applied voltage and inner needle diameter do not have large influence on the electrospun fiber average diameter but in the fiber diameter distribution. On the other hand, increasing the distance between the needle tip and the collector gives origin to fibers with larger average diameter. Independently on the processing conditions, all mats are produced in the electroactive phase of the polymer. Further, MC-3T3-E1cell adhesion is not inhibited by the fiber mats preparation, showing their potential use for biomedical applications.

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Section: Resultsmentioning

confidence: 99%

Fiber average size and distribution dependence on the electrospinning parameters of poly(vinylidene fluoride–trifluoroethylene) membranes for biomedical applications

et al. 2012

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“…The spinning solutions were prepared by dissolving TPU (7 wt%) and TBAC (1 wt%) in DMF with vigorous stirring over 10 h. TBAC was added in order to obtain nanobers with tree-like structures. 30 In order to reduce the solution viscosity and increase the solubility of TPU, a small amount of LiCl was introduced into the solution, 31,32 and then the mixed spinning solution was transferred into a syringe (10 mL). A voltage of 45 kV was applied in the experiment using a high voltage power supply (DW-P503-4ACF1, Tianjin, China).…”

Section: Methodsmentioning

confidence: 99%

Designing waterproof breathable material with moisture unidirectional transport characteristics based on a TPU/TBAC tree-like and TPU nanofiber double-layer membrane fabricated by electrospinning

Shi

Deng

et al. 2017

RSC Adv.

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In this study, a thermoplastic polyurethane (TPU) tree-like nanofiber membrane was fabricated via one-step electrospinning by adding a small amount of tetrabutylammonium chloride (TBAC). On the basis of the "push and pull" effect, double-layer membranes composed of pure TPU nanofiber membranes (hydrophobic) and TPU/TBAC tree-like nanofiber membranes (hydrophilic) were prepared by the direct electrospinning compounding method. The double-layer membranes were used as waterproof breathable materials with moisture unidirectional transport properties and good shielding properties. The water resistance, mechanical, waterproof, moisture permeability, air permeability, air filtration and moisture unidirectional transport performances of the double-layer membranes were tested. The results showed that the double-layer TPU membranes displayed good performances compared with the existing products on the market; they provide a new approach for the development of waterproof breathable materials.

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“…The formation of thin fibers is mainly achieved by the stretching and acceleration of the jets promoted by the high electric field [14,16]. It has been generally reported that the diameter of the fibers becomes gradually smaller with increasing applied electrical field ( ) [17][18][19][20].…”

Section: Figurementioning

confidence: 99%

Development of electrospun photocatalytic TiO2-polyamide-12 nanocomposites

Cossich

Bergamasco

Amorim

et al. 2015

Materials Chemistry and Physics

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Titanium dioxide (TiO2) in different forms such as films, fibers or particles are being extensively studied for removal of contaminants from aquatic environments due to its outstanding photocatalytic activity. This work reports the development of TiO 2 -polyamide 12 electrospun fiber mats. A systematic study on the influence of electrospun processing parameters on polymer fiber morphology was performed. It was observed that the average fiber diameter is mainly influenced by polymer concentration and average fiber diameters between 404 ± 82 nm and 1442 ± 360 nm were obtained. Polyamide-12 (PA-12) was used as a polymer matrix and electrospun with 0, 10 and 20 wt% of TiO 2 . It was observed that the filler does not change the average fiber diameter, being similar to that observed for neat PA-12 fibers processed under the same experimental conditions. The TiO 2 were particles dispensed not only in the bulk of the polymeric matrix but also on the surface of the fibers, especially for the samples with higher filler contents. Neat and nanocomposite electrospun samples show a hydrophobic behavior and a degree of crystallinity of ~25%. The photocatalytic performance of the processed samples was measured by following the degradation capability of a chosen dye, methylene blue (MB). Results show that the nanocomposite samples have a remarkable photocatalytic activity, especially the one with a higher load of TiO 2 particles (20 wt%), with all MB being removed from the solution after 100 min. AbstractTitanium dioxide (TiO 2 ) in different forms such as films, fibers or particles are being extensively studied for removal of contaminants from aquatic environments due to its outstanding photocatalytic activity. This work reports the development of TiO 2 -polyamide 12 electrospun fiber mats. A systematic study on the influence of electrospun processing parameters on polymer fiber morphology was performed. It was observed that the average fiber diameter is mainly influenced by polymer concentration and average fiber diameters between 404±82 nm and 1442±360 nm were obtained.Polyamide-12 (PA-12) was used as a polymer matrix and electrospun with 0, 10 and 20 wt% of TiO 2 . It was observed that the filler does not change the average fiber diameter, being similar to that observed for neat PA-12 fibers processed under the same experimental conditions. The TiO 2 were particles dispensed not only in the bulk of the polymeric matrix but also on the surface of the fibers, especially for the samples with 2 higher filler contents. Neat and nanocomposite electrospun samples show a hydrophobic behavior and a degree of crystallinity of ~ 25%.The photocatalytic performance of the processed samples was measured by following the degradation capability of a chosen dye, methylene blue (MB). Results show that the nanocomposite samples have a remarkable photocatalytic activity, especially the one with a higher load of TiO 2 particles (20 wt%), with all MB being removed from the solution after 100 min.

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Effect of LiCl on electrospinning of PAN polymer solution: theoretical analysis and experimental verification

Cited by 106 publications

References 14 publications

Fiber average size and distribution dependence on the electrospinning parameters of poly(vinylidene fluoride–trifluoroethylene) membranes for biomedical applications

Fiber average size and distribution dependence on the electrospinning parameters of poly(vinylidene fluoride–trifluoroethylene) membranes for biomedical applications

Designing waterproof breathable material with moisture unidirectional transport characteristics based on a TPU/TBAC tree-like and TPU nanofiber double-layer membrane fabricated by electrospinning

Development of electrospun photocatalytic TiO2-polyamide-12 nanocomposites

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