Novel electrospun polybenzimidazole fibers and yarns from ethanol/potassium hydroxide solution

Penchev, Hristo; Ublekov, Filip; Budurova, Dessislava; Sinigersky, Vesselin

doi:10.1016/j.matlet.2016.10.063

Cited by 13 publications

(11 citation statements)

References 15 publications

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“…electrospinning. 323 As mentioned in section 4, the sterically protected poly(dimethylbenzimidazolium) hydroxide was soluble in water, but complexing with a polybenzimidazolide formed under alkaline conditions proved an efficient approach to balance the swelling, 90 as shown in Scheme 11. Scheme 11 Ionic pairing of poly(dimethyl polybenzimidazolium) and the corresponding polybenzimidazolide as described by Thomas et al 90 The room temperature ion conductivity data for the ternary H2O/KOH/m-PBI system as reported in the literature are compiled in Figure 4b.…”

Section: Polybenzimidazolidesmentioning

confidence: 99%

From polybenzimidazoles to polybenzimidazoliums and polybenzimidazolides

et al. 2020

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Section: Polybenzimidazolidesmentioning

confidence: 99%

From polybenzimidazoles to polybenzimidazoliums and polybenzimidazolides

et al. 2020

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“…Using SEP, fibers with different morphological, physical, and mechanical properties can be fabricated by controlling the parameters which are applied to the system (i.e., voltage, solution feed rate, distance between the needle and collector, solution polymer concentration and electrical conductivity etc.) [2][3][4][5][6]. During the last decades, structures arose from SEP has attracted researchers' interest in biomedicine since present ECM-like 2 of 16 nanotopography, high porosity, and high specific area, thus helping the attachment, proliferation, and differentiation of cells.…”

Section: Introductionmentioning

confidence: 99%

Fabrication and Characterization of Polyetherimide Electrospun Scaffolds Modified with Graphene Nano-Platelets and Hydroxyapatite Nano-Particles

Kostopoulos

Κοτρώτσος

Fouriki

et al. 2020

IJMS

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Solution electrospinning process (SEP) is a versatile technique for generating non-woven fibrous materials intended to a wide range of applications. One of them is the production of fibrous and porous scaffolds aiming to mimic bone tissue, as artificial extracellular matrices (ECM). In the present work, pure and nano-modified electrospun polyetherimide (PEI) scaffolds have been successfully fabricated. The nano-modified ones include (a) graphene nano-platelets (GNPs), (b) hydroxyapatite (HAP), and (c) mixture of both. After fabrication, the morphological characteristics of these scaffolds were revealed by using scanning electron (SEM) and transmission electron (TEM) microscopies, while porosity and mean fiber diameter were also calculated. In parallel, contact angle experiments were conducted so that the hydrophilicity level of these materials to be determined. Finally, the mechanical performance of the fabricated scaffolds was investigated by conducting uniaxial tensile tests. Ιn future work, the fabricated scaffolds will be further utilized for investigation as potential candidate materials for cell culture with perspective in orthopedic applications.

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“…Recent experimental research has also been made to improve the electrospinning conditions for PBI nanofiber fabrication, such as replacing the commonly used organic solvent DMAc by environmentally friendly and cheap ethanol/potassium hydroxide (Ethanol/KOH). 52 An increasing number of research investigations are expected in the near future for controllable PBI nanofiber fabrication and advanced multifunctional applications. Yet, no work has been reported in the literature on systematic study of the hygroscopic and mechanical behaviors of electrospun PBI nanofiber membranes though these properties are fundamental to their potential structural and multifunctional applications.…”

Section: Introductionmentioning

confidence: 99%

A comparative experimental study of the hygroscopic and mechanical behaviors of electrospun nanofiber membranes and solution‐cast films of polybenzimidazole

Жолобко

Zhou

et al. 2020

J of Applied Polymer Sci

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This article reports a comparative experimental study of the hygroscopic and mechanical behaviors of electrospun polybenzimidazole (PBI) nanofiber membranes and solution-cast PBI films. Aselectrospun nonwoven PBI nanofiber mats (with the nanofiber diameter of ~250 nm) were heat-pressed under controlled temperature, pressure and duration for the study; lab-made solution-cast PBI films and commercially available PBI films (the PBI Performance Product Inc., Charlotte, NC ) were used as the control samples. Thermogravimetric and micro-tensile tests were utilized to characterize the hygroscopic (moisture absorption) and mechanical properties of the PBI nanofiber membranes at varying heat-pressing conditions, which were further compared to those of solution-cast PBI films. Experimental results indicated that the PBI nanofiber membranes carried slightly higher thermal stability and less hygroscopic properties than those of solution-cast PBI films. In addition, heat-pressing conditions significantly influenced the mechanical properties of the resulting PBI nanofiber membranes. The stiffness and tensile strength increase with increasing either the heat-pressing pressure or duration, and relevant mechanisms were explored. The present study provides a rational understanding of the hygroscopic and mechanical behaviors of electrospun This article is protected by copyright. All rights reserved. This is the author manuscript accepted for publication and has undergone full peer review but has not been through the copyediting, typesetting, pagination and proofreading process, which may lead to differences between this version and the Version of Record. Please cite this article as

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Novel electrospun polybenzimidazole fibers and yarns from ethanol/potassium hydroxide solution

Cited by 13 publications

References 15 publications

From polybenzimidazoles to polybenzimidazoliums and polybenzimidazolides

From polybenzimidazoles to polybenzimidazoliums and polybenzimidazolides

Fabrication and Characterization of Polyetherimide Electrospun Scaffolds Modified with Graphene Nano-Platelets and Hydroxyapatite Nano-Particles

A comparative experimental study of the hygroscopic and mechanical behaviors of electrospun nanofiber membranes and solution‐cast films of polybenzimidazole

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