Synthesis, characterization and mechanical properties of nylon–silver composite nanofibers prepared by electrospinning

Francis, Lijo; Giunco, Francesco; Balakrishnan, Avinash; Marsano, Enrico

doi:10.1016/j.cap.2009.12.025

Cited by 56 publications

(29 citation statements)

References 25 publications

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“…Since past several years nanosized metallic particles, especially silver nanoparticles impregnated with polymer matrix have been synthesized successfully by various research groups using various synthetic techniques. [2][3][4] The polymers can acts as a stabilizer in such system, and its role is to prevent the further growth and aggregation of silver nanoparticles. Silver is particularly attractive among metal nanoparticles because of its significance widespread applications in biology, 5 antimicrobial properties, 6 optical properties, and oxidative catalysis.…”

Section: Introductionmentioning

confidence: 99%

“…25 In this present study, we have prepared PAN nanofibers containing AgNO 3 by using electrospinning method. The reduction of silver ion into silver metallic nanoparticles could be performed by three different techniques such as chemical reduction using NaBH 4 , heat treatment, and refluxed the PAN/DMF solutions containing AgNO 3 at 80 C for 2 h prior to electrospinning. The PAN nanofibers membrane functionalized with Ag nanoparticles (i.e., PAN-Ag nanocomposites) obtained was used to study for antibacterial properties against gram negative E. coli and gram positive S. aureus and B. subtilis bacteria.…”

Section: Introductionmentioning

confidence: 99%

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Studies on the synthesis of electrospun PAN‐Ag composite nanofibers for antibacterial application

Mahapatra

Garg

Nayak

et al. 2011

J of Applied Polymer Sci

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ABSTRACT:We have successfully synthesized polyacrylonitrile (PAN) nanofibers impregnated with Ag nanoparticles by electrospinning method at room temperature. Briefly, the PAN-Ag composite nanofibers were prepared by electrospinning PAN (10% w/v) in dimethyl formamide (DMF) solvent containing silver nitrate (AgNO 3 ) in the amounts of 8% by weight of PAN. The silver ions were reduced into silver particles in three different methods i.e., by refluxing the solution before electrospinning, treating with sodium borohydride (NaBH 4 ), as reducing agent, and heating the prepared composite nanofibers at 160 C. The prepared PAN nanofibers functionalized with Ag nanoparticles were characterized by field emission scanning electron microscopy (FESEM), SEM elemental detection X-ray analysis (SEM-EDAX), transmission electron microscopy (TEM), and ultraviolet-visible spectroscopy (UV-VIS) analytical techniques. UV-VIS spectra analysis showed distinct absorption band at 410 nm, suggesting the formation of Ag nanoparticles. TEM micrographs confirmed homogeneous dispersion of Ag nanoparticles on the surface of PAN nanofibers, and particle diameter was found to be 5-15 nm. It was found that all the three electrospun PAN-Ag composite nanofibers showed strong antibacterial activity toward both gram positive and gram negative bacteria. However, the antibacterial activity of PAN-Ag composite nanofibers membrane prepared by refluxed method was most prominent against S. aureus bacteria.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Studies on the synthesis of electrospun PAN‐Ag composite nanofibers for antibacterial application

Mahapatra

Garg

Nayak

et al. 2011

J of Applied Polymer Sci

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“…TFE is extensively used as a co-solvent because it promotes or stabilises the formation of the secondary structure of peptides and proteins; [1,2] this property has resulted in several studies on the structure and interactions present in the liquid phase. [3] TFE presents several industrial applications, such as pharmaceutical uses as a starting material for some inhalation anaesthetics, [4] use in the preparation and treatment of nylon, [5] and as a working fluid for heat engines. [6] Fluorinated alcohols, and TFE in particular, are considered to be potential industrial alternative compounds for chlorofluorocarbons and hydrochlorofluorocarbons; these are the species responsible for ozone depletion in the stratosphere with high global warming potential.…”

Section: Introductionmentioning

confidence: 99%

Ionic Fragmentation Mechanisms of 2,2,2‐Trifluoroethanol Following Excitation with Synchrotron Radiation

et al. 2014

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Gaseous 2,2,2-trifluoroethanol (TFE) is excited with synchrotron radiation between 10 and 1000 eV and the ejected electrons and positive ions are detected in coincidence. In the valence-electron energy region, the most abundant species is CH2 OH(+) . Other fragments, including ions produced by atomic rearrangements, are also detected; the most abundant are COH(+) , CFH2 (+) and CF2 H2 (+) . The energies of electronic transitions from C 1 s, O 1 s and F 1 s orbitals to vacant molecular orbitals are determined. A site-specific C 1 s excitation is observed. The photofragmentation mechanisms after the excitation of core-shell electrons are inferred from analysis of the shape and slope of the coincidence between two charged fragments in the bi-dimensional coincidence spectra. The spectra are dominated by islands that correspond to the coincidence of H(+) with several charged fragments. One of the most important channels leads to the formation of CH2 OH(+) and CF3 (+) in a concerted mechanism.

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“…Pant et al 2012;Shi et al 2011;Park et al 2009;Kim et al 2013;Raj et al 2011;H. R. Pant et al 2011;Yin, Krifa, and Koo 2015;Li, Huang, and Lǚ 2006;Gieseking et al 2012;Francis et al 2010;Vitchuli et al 2011, Caballero A. et al, 2013. (Ryu et al 2003), (Park et al 2009).…”

Section: Environmental Parametersmentioning

confidence: 99%

“…R. Pant et al 2011), and 2,2,2-trifluoroethanol (TFE) (Li, Huang, and Lǚ 2006;Gieseking et al 2012;Francis et al 2010;Vitchuli et al 2011) (Table II). --6-14% wt (Li, Huang, and Lǚ 2006), 6.5, 8, 9, 10 % wt (Francis et al 2010), 10% wt .…”

Section: Solution Parametersmentioning

confidence: 99%

Vigilancia Técnológica De No Tejidos a Base De Nylon-6 Producidos Por Electrospinning Para Uso en Entornos Hospitalarios.

Mejía

Cuesta

Ortiz

et al. 2017

RCTA

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Resumen: En esta investigación, se considera la vigilancia tecnológica de las nanofibras no tejidas a base de Nylon-6 producidas por electrospinning, diferentes parámetros sobre el proceso de electrospun (concentración, voltaje, distancia de punta a colector de aguja y caudal), fueron analizados para su aplicación en entornos hospitalarios. Se encontró que el Nylon 6 presenta buenas propiedades mecánicas, biocompatibilidad y eficiencia como filtros de agua que permite su uso en un proceso de electrospinning para desarrollar nanofibras no tejidas con porosidad, gran área superficial por unidad de masa y alta permeabilidad, lo que lo hace un material opcional para entornos hospitalarios. La variación de los parámetros de electrospinning favorece la conformación de nanofibras no tejidas, reduce las gotas y proporciona diámetros de nanofibras más pequeños.Palabras clave: Nylon-6, no tejido, nanofibra, nanotextil, electrospinning, entornos hospitalarios. Abstract:In this research, we consider about the technological surveillance of nonwoven nanofibers based on nylon-6 produced via electrospinning, different parameters about the process of electrospun (concentration, voltage, needle tip-to-collector distance, and flow rate), were analyzed for their application in hospital environments. We found that Nylon 6 exhibits good mechanical properties, biocompatibility, and efficiency as water filters that permits their use in a process of electrospinning to develop non-woven nanofibers with porosity, large surface area per unit mass, and high permeability, it makes a good option material for hospital environments. The variation of electrospinning parameters favors the conformation of non-woven nanofibers, reduce the drops, and provides smaller nanofiber diameters.

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Synthesis, characterization and mechanical properties of nylon–silver composite nanofibers prepared by electrospinning

Cited by 56 publications

References 25 publications

Studies on the synthesis of electrospun PAN‐Ag composite nanofibers for antibacterial application

Studies on the synthesis of electrospun PAN‐Ag composite nanofibers for antibacterial application

Ionic Fragmentation Mechanisms of 2,2,2‐Trifluoroethanol Following Excitation with Synchrotron Radiation

Vigilancia Técnológica De No Tejidos a Base De Nylon-6 Producidos Por Electrospinning Para Uso en Entornos Hospitalarios.

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