Correlations between Fibre Diameter, Physical Parameters, and the Mechanical Properties of Randomly Oriented Biobased Polylactide Nanofibres

Selatile, Mantsopa Koena; Ray, Suprakas Sinha; Ojijo, Vincent; Sadiku, Rotimi

doi:10.1007/s12221-019-8262-z

Cited by 24 publications

(13 citation statements)

References 34 publications

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“…Also, the membrane porosity was calculated using the equation 30 , 31 : where is the apparent volume estimated by measuring the thickness and the surface area of the membrane and is the theoretical volume estimated from the membrane mass and bulk density.…”

Section: Methodsmentioning

confidence: 99%

Adsorption of methylene blue onto electrospun nanofibrous membranes of polylactic acid and polyacrylonitrile coated with chloride doped polyaniline

Mohammad

Atassi

2020

Sci Rep

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This study presents the preparation of membranes of polylactic acid (PLLA), polyacrylonitrile (PAN) and their corresponding membranes coated with polyaniline (PANI) for the adsorption of methylene blue (MB). Scanning electron microscopy micrographs reveal that all the membranes exhibit nanofibrous morphology. The adsorption capacity and the removal efficiency of the membranes are studied as a function of (initial adsorbate concentration, pH of the medium, temperature, contact time and adsorbent dosage). Coated membranes with PANI showed better adsorption performance and their DC conductivities were correlated to MB concentrations. Adsorption isotherms have also been performed and the adsorption process has been tested according to Langmuir and Freundlich models. The regeneration and reuse of the prepared membranes to re-adsorb MB were also investigated. The enhancement in adsorption performance and reusability of PANI-coated membranes in comparison with non-coated ones are fully discussed.

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Section: Methodsmentioning

confidence: 99%

Adsorption of methylene blue onto electrospun nanofibrous membranes of polylactic acid and polyacrylonitrile coated with chloride doped polyaniline

Mohammad

Atassi

2020

Sci Rep

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“…In situ reduction of loading AgNO 3 to AgNPs distributed the majority of AgNPs inside the fibers, which did not allow a substantial increment in the antibacterial efficacy of PLA. [ 161 ] This results indicated that immersion methods led to the exposition of AgNPs and improve the antibacterial activity.…”

Section: Post‐modification Methods For Micro/nanofibermentioning

confidence: 98%

“…[ 160 ] A similar conclusion was achieved when PLA mats were modified by four methods, namely: immersion coating into AgNPs solutions, electrospray‐coating, and in situ loading (AgNO 3 embedded PLA followed by UV photo‐reduction). [ 161 ] PLA fibers with diameter of 0.97 µm produced by ES had no antibacterial activity, while PLA/AgNPs membranes fabricated by electrospray‐coating and immersion coating of membranes into AgNPs suspension showed antibacterial activity against Pseudomonas aeruginosa and Staphylococcus aureus . In situ reduction of loading AgNO 3 to AgNPs distributed the majority of AgNPs inside the fibers, which did not allow a substantial increment in the antibacterial efficacy of PLA.…”

Section: Post‐modification Methods For Micro/nanofibermentioning

confidence: 99%

Tailoring the Surface Properties of Micro/Nanofibers Using 0D, 1D, 2D, and 3D Nanostructures: A Review on Post‐Modification Methods

Schneider

Facure

Chagas

et al. 2021

Adv Materials Inter

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Micro‐ and nanofibers produced by electrospinning and solution blow spinning (SBS) are highly suitable platforms for diverse applications due to their advantageous properties, including the high surface area to volume ratio, high porosity, and flexibility. To render them additional functionalities, distinct pre‐ or post‐modification processes have been proposed for modifying such micro‐ and nanofibers with 0D, 1D, 2D, and 3D nanostructures. The pre‐modification requires the addition of 0D–3D nanostructures (or their precursors) into the polymeric phase before the spinning process, which can demand laborious solubilization and requires changes in experimental spinning parameters, with impact on morphology, spinnability, and properties. Post‐modification methods, on the other hand, enable the fabrication of composite fibers without the need to optimize the spinning parameters, allowing a simple and efficient surface modification. Herein, recent advances on post‐modification methods of spun fibers, including wet chemistry, grafting, crosslinking, click chemistry, oxidations, hydrolysis and reduction strategies, dip‐coating, layer‐by‐layer, electro/air‐spray, atomic layer deposition, and plasma techniques aiming at the surface functionalization with 0D–3D nanostructures are surveyed. Recent results, trends, and challenges on the application of such surface‐modified fibers for environmental, industrial, and medical applications, including as adsorbent and filtering membranes, catalysts for pollutants degradation, and wearable sensors are examined.

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“…[55,56,58,59] The morphology of the resulting fibers depends on numerous factors, which include solution properties such as solvent type (Figure 3), flow rates (Figure 4), solution conductivity, viscosity, and concentration (Figure 5). [60][61][62] The operating parameters such as applied voltage and current also affect the fiber size, [57,63,64] Figure 6. Salama et al [65] noticed a decrease in fiber diameter of electrospun cellulose acetate (CA) containing CNT at various concentrations when power voltage was increased.…”

Section: Electrospinningmentioning

confidence: 99%

“…[68] The solution viscosity and polymer concentration also affect the fiber morphology. The viscosity increases with [60] Copyright 2019, Springer F I G U R E 4 Fibers spun using a 15 wt/vol% solution at flow rates of (A)10, (B) 25, (C) 50, and (D) 80 μL/min. Applied voltage: 14 kV; spinning distance: 15 cm.…”

Section: Electrospinningmentioning

confidence: 99%

A review on the processing–morphology–property relationship in biodegradable polymer composites containing carbon nanotubes and nanofibers

Motloung

Mofokeng

Ojijo

et al. 2021

Polymer Engineering & Sci

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Carbon nanofillers containing biodegradable polymer composites have become an emerging frontier in materials science and engineering because of their potential as environmentally friendly materials in multiple applications, from load-bearing to advanced packaging to biomedical applications. Herein, we present the effect of processing parameters on the final morphology and the resulting properties of the biodegradable polymer composites containing carbon nanotubes (CNTs) or carbon nanofibers (CNFs). Various strategies can be employed to develop such composites; however, the type of morphology, which results during processing, significantly affects the final properties of the obtained composites. Therefore, various processing strategies such as meltblending, additive manufacturing, and electrospinning are critically reviewed, together with the potential applications in load-bearing, tissue engineering, electromagnetic shielding, gas sensing, and packaging. Finally, we discuss the existing challenges and future directions in designing CNTs/CNFs containing biodegradable polymer composites with desired properties.

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Correlations between Fibre Diameter, Physical Parameters, and the Mechanical Properties of Randomly Oriented Biobased Polylactide Nanofibres

Cited by 24 publications

References 34 publications

Adsorption of methylene blue onto electrospun nanofibrous membranes of polylactic acid and polyacrylonitrile coated with chloride doped polyaniline

Adsorption of methylene blue onto electrospun nanofibrous membranes of polylactic acid and polyacrylonitrile coated with chloride doped polyaniline

Tailoring the Surface Properties of Micro/Nanofibers Using 0D, 1D, 2D, and 3D Nanostructures: A Review on Post‐Modification Methods

A review on the processing–morphology–property relationship in biodegradable polymer composites containing carbon nanotubes and nanofibers

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