Nanoclay-Incorporated Polycaprolactone Matrix via Electrospinning Techniques-Enriched Spectroscopic Responses

Merin, D. Devina; José, Ricardo; Arulananth, T. S.; Sundarraj, Antony Allwyn; Inbamalar, T. M.; Meharie, Meseret Getnet

doi:10.1155/2023/1194158

Cited by 9 publications

(4 citation statements)

References 37 publications

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“…It is calculated by

with the masses

of the dry sample and

of the sample after immersion in water for a defined time. Often, distilled or deionized water is used, and immersion times are usually around 1–2 days [ 38 , 42 , 140 ]. The water uptake may vary upon adding fillers, such as nanoclays [ 138 ].…”

Section: Water Uptakementioning

confidence: 99%

Measuring Physical Properties of Electrospun Nanofiber Mats for Different Biomedical Applications

2023

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Electrospun nanofiber mats are nowadays often used for biotechnological and biomedical applications, such as wound healing or tissue engineering. While most studies concentrate on their chemical and biochemical properties, the physical properties are often measured without long explanations regarding the chosen methods. Here, we give an overview of typical measurements of topological features such as porosity, pore size, fiber diameter and orientation, hydrophobic/hydrophilic properties and water uptake, mechanical and electrical properties as well as water vapor and air permeability. Besides describing typically used methods with potential modifications, we suggest some low-cost methods as alternatives in cases where special equipment is not available.

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“…It is calculated by

with the masses

of the dry sample and

Section: Water Uptakementioning

confidence: 99%

Measuring Physical Properties of Electrospun Nanofiber Mats for Different Biomedical Applications

2023

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“…The nanoclay inclusion enhanced the adsorption processes of the nanocomposite nanofibers. Devina Merin et al [130] also examined morphologies, thermal stabilities, and sorption properties of electrospun polycaprolactone/nanoclay nanofibers. The porosities, pore sizes, and diameters influenced the final nanofiber properties.…”

Section: Polycaprolactone/nanoclay Nanofibermentioning

confidence: 99%

Nanoclay-Reinforced Nanocomposite Nanofibers—Fundamentals and State-of-the-Art Developments

et al. 2023

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Nanoclays are layered mineral silicates, i.e., layered silicate nanosheets. Nanoclays such as montmorillonite, bentonite, kaolinite, etc., have been used as reinforcements in the nanofibers. Numerous polymers have been used to fabricate the nanofibers, including poly(vinylidene fluoride), poly(vinyl alcohol), polycaprolactone, nylon, polyurethane, poly(ethylene oxide), and others. To develop better compatibility with polymers, nanoclays have been organo-modified prior to reinforcement in the nanofiber matrices. This state-of-the-art review highlights the fundamentals, design, fabrication, and characteristics of the polymer/nanoclay nanofibers. The nanoclay filled nanocomposite nanofibers have been fabricated using electrospinning and other fiber processing techniques. The electrospinning technique has been preferred to form the nanoclay-filled nanofibers, owing to the better control of processing parameters and resulting nanofiber properties. The electrospun polymer/nanoclay nanofibers usually have fine nanoparticle dispersions, microstructures, smooth textures, and narrow diameters. The physical properties of the designed nanofibers depend upon the processing technology used, solvent, solution/melt concentration, flow rate, spinning speed, voltage, and other process parameters. Hence, this review attempts to assess a literature-driven consequence of embedding nanoclays in the polymeric nanofibers in a broad context of the application of these fibrous materials. Conclusively, to design the polymer/nanoclay nanofibers, montmorillonite nanoclay has been observed as a nanofiller in most of the studies, and, similarly, the electrospinning technique was preferred as a fabrication technique. Almost all the physical properties of the nanofibers studied revealed dependences upon the choice of the polymer matrix for nanofiber formation as well as the nanoclay contents, modification, and dispersion state. Accordingly, the nylon/nanoclay nanofibers have been investigated for nanofiller dispersion, mechanical properties, and thermal profiles. The antibacterial properties were among the prominent features of the poly(vinyl alcohol)/nanoclay nanofibers. The poly(vinylidene fluoride)/nanoclay systems were explored for the microstructure, crystallinity, and piezoelectric properties. The polycaprolactone/nanoclay nanofibers having fine microstructure were capable of forming tissue engineering scaffolds. The drug delivery and sound absorption properties were noticeable for the polyurethane/nanoclay nanofiber systems. Moreover, the poly(lactic acid)/nanoclay nanofibers were found to have prominent biodegradability and low gas permeability features. The resulting polymer/nanoclay nanocomposite nanofiber systems found potential for the technical applications of sensors, packaging, tissue engineering, and wound healing. However, thorough research efforts have been found to be desirable to find the worth of polymer/nanoclay nanofibers in several concealed technological sectors of energy, electronics, aerospace, automotives, and biomedical fields.

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“…The incorporation of electron mediators into electrospun nanofibers (ENFs) has led to nanohybrids with network structures where the individual ENFs are interlinked . The nanostructural architecture of ENF composite-modified electrodes allows an even electron distribution within their electrocatalysts, and their 3D-dimensionality increases the effective electrocatalytic surface areas when compared to electrodes modified with ENFs or the individual electron mediators. , Morphological features such as ENF pore sizes and network cavities can be conveniently altered using electrospinning instrumental and solution parameters to manipulate their selective uptake of analytes on CME interfaces. , The PANI-CoPc-fur- f -MWCNTs conjugate was embedded into a poly(vinyl acetate) (PVA) shell, and the ENFs were subsequently immobilized on a GCE. To mechanically reinforce the ENF film, Nafion (Nf), an ion-exchange polymer, was used as an electrochemical mordant through thermally annealing the former to the GCE surface.…”

Section: Introductionmentioning

confidence: 99%

“… 22 , 23 Morphological features such as ENF pore sizes and network cavities can be conveniently altered using electrospinning instrumental and solution parameters to manipulate their selective uptake of analytes on CME interfaces. 24 , 25 The PANI-CoPc-fur- f -MWCNTs conjugate was embedded into a poly(vinyl acetate) (PVA) shell, and the ENFs were subsequently immobilized on a GCE. To mechanically reinforce the ENF film, Nafion (Nf), an ion-exchange polymer, was used as an electrochemical mordant through thermally annealing the former to the GCE surface.…”

Section: Introductionmentioning

confidence: 99%

Electrospun Nanofiber Composite Utilized as an Electrocatalyst for the Detection of Acetaminophen in Multifarious Water Samples

Shoba,

Mambanda,

Booysen

2024

ACS Omega

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Herein, the nanofabrication and characterization of new conductive materials, PANI-CoPc-fur (1) ((PANI = polyaniline and CoPc-fur = tetra-4-(furan-2-methylthiophthalocyaninato)-Co(II)) and PANI-CoPc-fur-f-MWCNTs (2) ( f-MWCNTs = carboxylic acid-functionalized multiwalled carbon nanotubes), are reported. Subsequently, an electrospun nanofiber (ENF) composite of 2, encapsulated with a poly(vinyl acetate) shell, was fabricated. The resultant core−shell nanoconjugated fibers, ENFs-2, were adsorbed on a glassy carbon electrode (GCE), followed by the immobilization of a permeable adhesion top layer of Nafion (Nf) to render the chemically modified electrode, GCE|ENFs-2-Nf. The electron-mediating properties of the components within the film of GCE|ENFs-2-Nf synergistically aided in promoting its electrocatalytic activities. Consequently, the CME showed greater cyclic voltammetry (CV) peak currents compared to the bare GCE and other modified electrodes, indicating its higher sensitivity toward acetaminophen (APAP), an emerging water pollutant of concern. The detection of APAP at the GCE|ENFs-2-Nf attained by square-wave voltammetry (SWV) was linear from 10 to 200 μM of APAP and was reproducible (%RSD of 3.2%, N = 3). The respective calculated limits of detection and quantification (LOD and LOQ) values of 0.094 and 0.28 μM were lower than those acquired using other electrochemical techniques. Analysis of APAP in the presence of commonly associated interferences metronidazole (MTZ) and dopamine (DA) illustrated a significant separation between the SWV peak potentials of APAP and MTZ, whereas there was some degree of overlap between the SWV current responses of APAP and DA. The analytical performance of the GCE|ENFs-2-Nf rendered a comparable percentage recovery (104%) with that of liquid chromatography−mass spectrometry (LC−MS) (106%).

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Nanoclay-Incorporated Polycaprolactone Matrix via Electrospinning Techniques-Enriched Spectroscopic Responses

Cited by 9 publications

References 37 publications

Measuring Physical Properties of Electrospun Nanofiber Mats for Different Biomedical Applications

Measuring Physical Properties of Electrospun Nanofiber Mats for Different Biomedical Applications

Nanoclay-Reinforced Nanocomposite Nanofibers—Fundamentals and State-of-the-Art Developments

Electrospun Nanofiber Composite Utilized as an Electrocatalyst for the Detection of Acetaminophen in Multifarious Water Samples

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