Polystyrene-block-poly(2-cinnamoylethyl methacrylate) Nanofibers—Preparation, Characterization, and Liquid Crystalline Properties

Liu, Guojun; Ding, Jianfu; Qiao, Lijie; Guo, Andrew; Dymov, B. P.; Gleeson, J. T.; Hashimoto, Takeji; Saijo, Kenji

doi:10.1002/(sici)1521-3765(19990903)5:9<2740::aid-chem2740>3.0.co;2-v

Cited by 168 publications

(93 citation statements)

References 36 publications

(48 reference statements)

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“…1 So far, many different techniques such as force-spinning, 2 electro-spinning, 3,4 melt blowing, 5 phase separation, 6 self-assembly, 7 and template synthesis 8,9 have been introduced for the fabrication of polymer nanofibers. Among them, electro-spinning is a well-established and intensively investigated methodology, and it appears to be the only known technique that is suitable to fabricate continuous nanofibers.…”

Section: Introductionmentioning

confidence: 99%

Numerical and experimental study on the steady cone-jet mode of electro-centrifugal spinning

et al. 2018

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This study focuses on a numerical investigation of an initial stable jet through the air-sealed electrocentrifugal spinning process, which is known as a viable method for the mass production of nanofibers. A liquid jet undergoing electric and centrifugal forces, as well as other forces, first travels in a stable trajectory and then goes through an unstable curled path to the collector. In numerical modeling, hydrodynamic equations have been solved using the perturbation method-and the boundary integral method has been implemented to efficiently solve the electric potential equation. Hydrodynamic equations have been coupled with the electric field using stress boundary conditions at the fluid-fluid interface. Perturbation equations were discretized by a second order finite difference method, and the Newton method was implemented to solve the discretized non-linear system. Also, the boundary element method was utilized to solve electrostatic equations. In the theoretical study, the fluid was described as a leaky dielectric with charges only on the surface of the jet traveling in dielectric air. The effect of the electric field induced around the nozzle tip on the jet instability and trajectory deviation was also experimentally studied through plate-plate geometry as well as point-plate geometry. It was numerically found that the centrifugal force prevails on electric force by increasing the rotational speed. Therefore, the alteration of the applied voltage does not significantly affect the jet thinning profile or the jet trajectory. Published by AIP Publishing. https://doi

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Section: Introductionmentioning

confidence: 99%

Numerical and experimental study on the steady cone-jet mode of electro-centrifugal spinning

et al. 2018

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“…Many of the polymers can be electrically spinning and their properties differ depending on the different properties of the solution, processing parameters and environmental conditions 26 .…”

Section: Introductionmentioning

confidence: 99%

Adsorption Kinetic of Malachite Green Dye from Aqueous Solutions by Electrospun Nanofiber Mat

Naser¹,

Himdan²,

Ibraheim³

2017

Orient. J. Chem

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A resin of 2-aminophenol-formaldehyde (2-A-Ph-F) was prepared and characterized by FT-IR technique. This resin was loaded on polystyrene (PS) as a matrices using DMF solvent, after that the polymer solution was used in electrospinning process in order to result electrospun nanofiber mat (2-A-Ph-F)/PS which has been used as adsorbent surface for studying the adsorption kinetic of malachite green dye (MG) at different temperatures to observe the behavior of this adsorption system. Generally, there is an increase in the values of rate constants with increasing temperature and the experimental results obeyed very well Lagergren's equation. So, the activation energy value (Ea) was estimated by Arrhenius equation, while the diffusion mechanism and the rate controlling steps explained according to Weber's intraparticle diffusion model.

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“…Among the various methods used so far for producing nanofibers, such as drawing [10], template synthesis [11,12], and self-assembly [13], electrospinning is a well-established and intensively investigated methodology, and is currently the only known technique that can fabricate continuous nanofibres [14][15][16].…”

Section: Introductionmentioning

confidence: 99%

Experimental and numerical study on isolated and non-isolated jet behavior through centrifuge spinning system

Valipouri

Ravandi

Pishevar

et al. 2015

International Journal of Multiphase Flow

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This work presents a comparison between an isolated and a non-isolated curved liquid jet emerging from a rotating nozzle through centrifuge spinning system. In the centrifugal spinning process, a polymer solution has been pushed by the centrifugal force through small nozzle of a rapidly rotating cylindrical drum. Thereby thin fibers are formed and collected on a collector in the form of a web. Centrifuge spinning suffered from a strong air resistance which leads to a more deflected jet as well as its rapidly solvent evaporation resulting in thicker nanofibers. In this work, centrifuge spinning has been equipped by a rotating collector, whereas the fabrication process was skillfully sealed from ambient airflow. A comparison was drawn between the trajectory of Newtonian liquid jets fabricated by centrifuge spinning and air-sealed centrifuge spinning. The captured images of the liquid jet trajectory using a high speed camera showed that non-isolated liquid jets were more curved than isolated liquid jets due to air resistance. A pre-presented non-linear analysis of the Navier-Stokes equations was carried out and the numerical solutions were compared with the experiments.There was fairly good agreement between the isolated jet trajectory and the model-predicted one, but there were differences between the non-isolated jet trajectory and the simulation results. The non-isolated jet curved more compared to the others due to air drag. Also, the diameter of polymeric nanofibers was predicted and compared with experiments. Some qualitative agreement was found

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Polystyrene-block-poly(2-cinnamoylethyl methacrylate) Nanofibers—Preparation, Characterization, and Liquid Crystalline Properties

Cited by 168 publications

References 36 publications

Numerical and experimental study on the steady cone-jet mode of electro-centrifugal spinning

Numerical and experimental study on the steady cone-jet mode of electro-centrifugal spinning

Adsorption Kinetic of Malachite Green Dye from Aqueous Solutions by Electrospun Nanofiber Mat

Experimental and numerical study on isolated and non-isolated jet behavior through centrifuge spinning system

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