Study of parallel oriented electrospun polyvinyl alcohol (PVA) nanofibers using modified electrospinning method

Yusuf, Yusril; Ula, Nur Mufidatul; Jahidah, Khannah; Kusumasari, Ervanggis Minggar; Triyana, Kuwat; Harsojo,

doi:10.1063/1.4945558

Cited by 9 publications

(5 citation statements)

References 10 publications

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“…This is because, during the electrospinning process, the collector gap for collecting nanofiber A is larger. This result is in accordance with the results of previous work, 16) in which the S of the sample decreased significantly when the collector gap was 20 mm. In addition, in the present study, there was a rather significant improvement in S compared to the previous study.…”

Section: Electrospun Nanofiberssupporting

confidence: 93%

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Low-frequency electrohydrodynamic convection patterns in nematic liquid crystal aligned using parallel-oriented nanofiber

Mahendra

Nugroho

Yusuf

2018

Jpn. J. Appl. Phys.

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Parallel-aligned poly(vinyl alcohol) (PVA) nanofiber with a diameter of 240 + 60 nm and an alignment parameter (S) of 0.95 + 0.16 was obtained by a gap collector electrospinning that used copper (Cu) as a collector. The sandwiched cells (the horizontal-view and longitudinal-view) nematic liquid crystal was prepared by treating glass surfaces with the aligned PVA nanofiber to provide uniform anchoring of the director. When an electric field was applied to these samples, the electrohydrodynamic convection (EHC) pattern was observed. In the longitudinal-view cells, above a threshold voltage at low frequency, a typically low-frequency EHC rolls i.e., a Williams domain (WD) pattern was observed. By increasing the voltage, a fluctuating Williams domain (FWD) and grid patterns (GPs) could also be observed. In the transverse-view cells, at low-frequency regimes, WD, sawtooth patterned (STP), and dynamic scattering mode (DSM) patterns were observed. By replacing the conventional rubbing method with the use of parallel-aligned nanofibers, the well-known EHC phenomenon also could be observed.

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Section: Electrospun Nanofiberssupporting

confidence: 93%

“…We previously have studied parallel-oriented nanofibers prepared using electrospinning gap collectors. 16)…”

Section: Introductionmentioning

confidence: 99%

Low-frequency electrohydrodynamic convection patterns in nematic liquid crystal aligned using parallel-oriented nanofiber

Mahendra

Nugroho

Yusuf

2018

Jpn. J. Appl. Phys.

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“…One method of obtaining aligned electrospun fibers is to use parallel electrodes, or two parallel plates (separated by a gap) connected to a grounded electrode [115]. As the distance between the two conductive collectors increases, the average diameter of the nanofibers decreases with a high degree of alignment [116]. The concept proposed by Rakesh et al is based on modifying the nature of the electrostatic field on the collector plate by creating a repulsive field of different magnitudes and directions using collector plates with various geometric slots to produce aligned electrospun nanofibers [117].…”

Section: Collector Designmentioning

confidence: 99%

PVA-Based Electrospun Materials—A Promising Route to Designing Nanofiber Mats with Desired Morphological Shape—A Review

Türkoğlu,

Khomarloo,

Mohsenzadeh

et al. 2024

IJMS

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Poly(vinyl alcohol) is one of the most attractive polymers with a wide range of uses because of its water solubility, biocompatibility, low toxicity, good mechanical properties, and relatively low cost. This review article focuses on recent advances in poly(vinyl alcohol) electrospinning and summarizes parameters of the process (voltage, distance, flow rate, and collector), solution (molecular weight and concentration), and ambient (humidity and temperature) in order to comprehend the influence on the structural, mechanical, and chemical properties of poly(vinyl alcohol)-based electrospun matrices. The importance of poly(vinyl alcohol) electrospinning in biomedical applications is emphasized by exploring a literature review on biomedical applications including wound dressings, drug delivery, tissue engineering, and biosensors. The study also highlights a new promising area of particles formation through the electrospraying of poly(vinyl alcohol). The limitations and advantages of working with different poly(vinyl alcohol) matrices are reviewed, and some recommendations for the future are made to advance this field of study.

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“…The solutions required to perform the experiment are a combination of PVA (using as a solute) and distilled water (used as a solvent) in a given weight ratio. If m PVA and m solvent represnt mass of PVA and the solvent respectively, then the general formula for making x percent of a solution is given by [20]…”

Section: Solution Preparation and Range Of Parametersmentioning

confidence: 99%

A postgraduate experiment: a study of fabricating nanofibers by electrospinning

Khan¹,

Mahmood²,

Raees³

et al. 2021

Eur. J. Phys.

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The purpose of this work is to propose an experiment based on the fabrication of nanofibers by an electrospinning method that may become part of curricula at postgraduate level, for students of physics. This addition will not only increase the teaching capabilities of scientist and researchers at this level but also enhance the basic understanding of physics students of experimental setup and their approach to explore untouched areas in the field of nano-science in the future. This experiment gives a qualitative analysis of some physical parameters that affects the morphology and size of polyvinyl alcohol (PVA) nanofibers. The experiment has been performed on a trial basis, at the Department of Physics, University of Karachi. During the experiment we studied the effect of needle diameter and concentration of PVA on the size of nanofibers by SEM analysis. The statistical analysis of PVA nanofibers was performed by one-way analysis of variance by considering a P-value equal to 0.05. The analysis concluded that variation at the lower range of needle diameter has no significant effect on the size and morphology of nanofibers. Moreover, it is suggested, for future research, to consider the orientation of fiber alignment and control.

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Study of parallel oriented electrospun polyvinyl alcohol (PVA) nanofibers using modified electrospinning method

Cited by 9 publications

References 10 publications

Low-frequency electrohydrodynamic convection patterns in nematic liquid crystal aligned using parallel-oriented nanofiber

Low-frequency electrohydrodynamic convection patterns in nematic liquid crystal aligned using parallel-oriented nanofiber

PVA-Based Electrospun Materials—A Promising Route to Designing Nanofiber Mats with Desired Morphological Shape—A Review

A postgraduate experiment: a study of fabricating nanofibers by electrospinning

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