Effect of electrospinning process variables on the size of polymer fibers and bead-on-string structures established with a 2<sup>3</sup> factorial design

Korycka, Paulina; Mirek, A.; Kramek-Romanowska, Katarzyna; Grzeczkowicz, Marcin; Lewińska, Dorota

doi:10.3762/bjnano.9.231

Cited by 61 publications

(41 citation statements)

References 27 publications

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“…The studies in the relevant literature reveals that uniform nanofibres cannot be obtained and beads are observed as a result of the solution viscosity below a certain value [23][24][25][26][27]. Moreover, too high viscosity adversely affects fiber formation and increases nanofiber diameters.…”

Section: Resultsmentioning

confidence: 99%

Polyacrylonitrile Nanofiber Optimization as Precursor of Carbon Nanofibers for Supercapacitors

Altın¹,

Bedeloğlu²

2020

Journal of Innovative Science and Engineering (JISE)

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Polyacrylonitrile (PAN) nanofibers are one of the primary precursors in the production of carbon nanofibers. The nanofiber morphology is significantly affected by the process parameters such as polymer concentration, distance, applied voltage and feed rate during the production of PAN nanofibers obtained by the solution-based electrospinning method, and these parameters should be optimized properly. In this study, firstly PAN nanofiber production parameters were optimized, and then homogeneous and thin PAN nanofibers produced in optimum conditions were used as the precursor in the production of carbon nanofibers. PAN nanofibers with a diameter of 233 nm were obtained at 7.5% PAN concentration in N,N-dimethylformamide (DMF), 28 kV applied voltage, 17.5 cm nozzle to collector distance, 2 ml/h feed rate and 500 rpm rotation speed of the aluminum drum. The carbon nanofiber diameters produced after the stabilization and carbonization processes were measured as 200 and 140 nm, respectively. The morphological, chemical and thermal properties of the produced nanofibers were characterized by field emission scanning electron microscopy (FE-SEM), Fourier transform infrared (FT-IR), thermogravimetric analyzer (TGA). Carbon nanofibers, which are made from optimized electrospun PAN nanofibers, can be used to construct supercapacitors in future studies.

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Section: Resultsmentioning

confidence: 99%

Polyacrylonitrile Nanofiber Optimization as Precursor of Carbon Nanofibers for Supercapacitors

Altın¹,

Bedeloğlu²

2020

Journal of Innovative Science and Engineering (JISE)

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“…The fibers spun from 6 wt% dope show minor beads (see Fig. 3y a) due to the low polymer concentration [42]. The 11 wt% and 13 wt% dopes require, presumably, due to their higher viscosity, hot air assisted electrospinning.…”

Section: Spinning Parameters and Fiber Deposition On The Collectormentioning

confidence: 98%

Activation of electrospun carbon fibers: the effect of fiber diameter on CO2 and steam reaction kinetics

et al. 2021

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First, we present a fabrication process for electrospun carbon fiber mats with mean fiber diameters between 108 nm and 623 nm. The carbon fiber mats were produced by electrospinning of polyacrylonitrile (PAN) solutions and subsequent carbonization. The fiber mats feature small variations of their properties that are required for parameter studies. Second, we investigate the kinetics of steam and CO2 activation with three different activation temperatures and times. Both activation methods result in a surface area increase depending on activation temperature and time. Detailed analysis of the macroscopic properties burn-off, surface area, and conductivity reveals insights into the microscopic activation kinetics. The different fiber diameters of the carbon fiber mats enable the distinction of surface driven and bulk processes. Our results indicate, that CO2 activation kinetics are mass transport controlled, and that steam activation kinetics are reaction rate controlled. The turbostratic nature of PAN derived carbon and the distinct characteristics of the activation agents could explain the nonlinear behavior of the burn-off and surface area development.

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“…In addition to coaxial fibers, other structures of electrospinning nanofibers have also been studied. Since the structure of fibers determines the properties of fibers, the development of functional fibers must start from regulating the structure of fibers [60,61,62].…”

Section: Electrospinning Np-based Materials Interfacesmentioning

confidence: 99%

Electrospinning Nanoparticles-Based Materials Interfaces for Sensor Applications

Zhang

Jia

Liu

et al. 2019

Sensors

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Electrospinning is a facile technique to fabricate nanofibrous materials with adjustable structure, property, and functions. Electrospun materials have exhibited wide applications in the fields of materials science, biomedicine, tissue engineering, energy storage, environmental science, sensing, and others. In this review, we present recent advance in the fabrication of nanoparticles (NPs)-based materials interfaces through electrospinning technique and their applications for high-performance sensors. To achieve this aim, first the strategies for fabricating various materials interfaces through electrospinning NPs, such as metallic, oxide, alloy/metal oxide, and carbon NPs, are demonstrated and discussed, and then the sensor applications of the fabricated NPs-based materials interfaces in electrochemical, electric, fluorescent, colorimetric, surface-enhanced Raman scattering, photoelectric, and chemoresistance-based sensing and detection are presented and discussed in detail. We believe that this study will be helpful for readers to understand the fabrication of functional materials interfaces by electrospinning, and at the same time will promote the design and fabrication of electrospun nano/micro-devices for wider applications in bioanalysis and label-free sensors.

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Effect of electrospinning process variables on the size of polymer fibers and bead-on-string structures established with a 2³ factorial design

Cited by 61 publications

References 27 publications

Polyacrylonitrile Nanofiber Optimization as Precursor of Carbon Nanofibers for Supercapacitors

Polyacrylonitrile Nanofiber Optimization as Precursor of Carbon Nanofibers for Supercapacitors

Activation of electrospun carbon fibers: the effect of fiber diameter on CO2 and steam reaction kinetics

Electrospinning Nanoparticles-Based Materials Interfaces for Sensor Applications

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Effect of electrospinning process variables on the size of polymer fibers and bead-on-string structures established with a 23 factorial design

Cited by 61 publications

References 27 publications

Polyacrylonitrile Nanofiber Optimization as Precursor of Carbon Nanofibers for Supercapacitors

Polyacrylonitrile Nanofiber Optimization as Precursor of Carbon Nanofibers for Supercapacitors

Activation of electrospun carbon fibers: the effect of fiber diameter on CO2 and steam reaction kinetics

Electrospinning Nanoparticles-Based Materials Interfaces for Sensor Applications

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Product

Resources

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Effect of electrospinning process variables on the size of polymer fibers and bead-on-string structures established with a 2³ factorial design