Modification of electrospun nylon nanofibers using layer-by-layer films for application in flow injection electronic tongue: Detection of paraoxon pesticide in corn crop

Oliveira, Juliano Elvis de; Scagion, Vanessa P.; Grassi, Viviane; Corrêa, Daniel S.; Mattoso, Luiz H. C.

doi:10.1016/j.snb.2012.03.056

Cited by 51 publications

(15 citation statements)

References 37 publications

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“…Analyzing the PCL nanofiber membrane, the characteristic bands were found at 2949 cm −1 , referring to the asymmetric CH 2 stretch; at 2867 cm −1 , referring to the symmetrical CH 2 vibrational stretch; at 1725 cm −1 , corresponding to the C=O bond; at 1297 cm −1 , the COC–C stretch obtained in the crystalline phase; at 1240 cm −1 , the COC asymmetric stretch and at 1173 cm −1 , corresponding to the symmetric COC stretch [Figure (a)] . Analyzing the PA‐6 nanofiber membrane [Figure (b)], characteristic peaks of PAs due to peptide bonding were observed at 3300 cm −1 (ν of the NH group), 1650 cm −1 (ν of CO–amide I group), 1550 cm −1 (δ of the NH group + ν of CN–amide II), 2857 cm −1 (symmetric CH 2 vibrational stretch), and 2930 cm −1 (nonsymmetric CH 2 vibrational stretch), according to different publications . In addition, a band in the ν region of the –OH group (3450 cm −1 ) of water was due to the hydrophilicity of the nanofiber membrane.…”

Section: Resultsmentioning

confidence: 99%

Electrospun nanofibrous membranes for solid‐phase extraction of estriol from aqueous solution

Nectoux

Medeiros

Bussamara

et al. 2018

J of Applied Polymer Sci

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Nowadays, efficient, economical, and environmentally friendly materials for the removal of emerging contaminants from the aquatic environment have been sought. Electrospun nanofibrous membranes contain fibers with diameters of submicron or nanometer scale, making them very promising adsorbent materials for use in several areas. In this context, the present study aims to synthesize and apply polymeric nanofiber membranes for solid‐phase extraction of estriol from aqueous solution. Nanofiber membranes of poly(ε‐caprolactone) (PCL) and polyamide‐6 (PA‐6) were tested as adsorbent materials and characterized by different techniques. The electrospinning time was evaluated, and the highest removal obtained for the PA‐6 nanofiber was 76.5%, spun for 100 min, whereas for the PCL nanofiber, 80% time‐independent removal was obtained. The thinner nanofibers had a larger contact area, therefore higher removals, except for the PCL nanofiber, which presented exposed beads on smaller thicknesses that impaired their efficiency. Furthermore, the nanofiber membranes have been applied for the determination of 1.0 mg L−1 of E3 in superficial water sample with satisfactory results. These aspects demonstrate that the synthesized nanofibers present an efficient material for the extraction of estriol: of high simplicity, low cost, and using green chemistry. © 2018 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2019, 136, 47189.

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Section: Resultsmentioning

confidence: 99%

Electrospun nanofibrous membranes for solid‐phase extraction of estriol from aqueous solution

Nectoux

Medeiros

Bussamara

et al. 2018

J of Applied Polymer Sci

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“…Electrospinning also appears to be a plausible technique to generate biocompatible and biodegradable polymer/metal-oxide nanofibers, such as ZnO, TiO 2 , and NiO, for highly sensitive biosensing applications. [275][276][277]. It is widely known that enzyme immobilization is a tough task to execute in biosensor technique.…”

Section: Biosensorsmentioning

confidence: 99%

A Review on Biopolymer-Based Fibers via Electrospinning and Solution Blowing and Their Applications

Kakoria

Sinha-Ray

2018

Fibers

127

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Electrospinning, for the last few decades, has been extensively acknowledged for its ability to manufacture a macro/nanofibrous architecture from biopolymers, which is otherwise difficult to obtain, in a cost effective and user-friendly technique. Such biopolymer nanofibers can be tailored to meet applications such as drug delivery, tissue engineering, filtration, fuel cell, and food packaging etc. Due to their structural uniqueness, chemical and mechanical stability, functionality, super-high surface area-to-volume ratio, and one-dimensional orientation, electrospun biopolymer nanofibers have been proven to be extremely beneficial. A parallel method in nonwoven methodologies called "Solution Blowing" has also become a potential candidate to fabricate a similar type of architecture from biopolymer fibers, and is gaining popularity among researchers, despite its recent advent in early 2000's. This review chiefly focuses on the fabrication of biopolymer macro/nanofibers via electrospinning and solution blowing, and several applications of such fiber architectures. Biopolymers include plant-and animal-derived biopolymers, such as cellulose, lignin, chitin, and chitosan, as well as proteins and their derivatives. The fabrication of biopolymer fibers from these biopolymers alone or as blends, predominantly with biodegradable polymers like Polyvinyl alcohol (PVA), Polyethylene Oxide (PEO), Polyethylene glycol (PEG), poly (lactide-co-glycolide) (PLGA) etc., or non-biodegradable polymers like polyamide, Polyacrylonitrile (PAN) etc., will be discussed in detail, along with the applications of several composites of such sort.

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“…The formulations were rigorously stirred for several hours (up to 24 h) to ensure the complete dissolution of the constituents. The polymer solutions were spun into nanofibers by electrospinning at room temperature (∼24 ∘ C) and around 65% relative humidity (RH) and following the procedures described in Oliveira et al [30] and Mori et al [11]. A syringe pump (KD scientific, model 781100) was used to feed the polymer solution (20 L/min) through a needle ( Figure 1).…”

Section: Production Of the Nanostructured Matsmentioning

confidence: 99%

Nanostructured Polylactic Acid/Candeia Essential Oil Mats Obtained by Electrospinning

Mori

Passos

Oliveira

et al. 2015

Journal of Nanomaterials

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This work aims to evaluate the effect of inclusion of different contents of candeia (Eremanthus erythropappus) essential oil (whose alpha-bisabolol is the main terpene) on the properties of polylactic acid (PLA) nanostructured mats and their relationship with fiber morphology and structure. The interaction occurring between the PLA and the candeia essential oil was confirmed by thermal and microscopy analysis. Addition of candeia essential oil increased nanofiber diameter and decreased the glass transition and melting temperatures of the nanofibers, suggesting lower energy input for processing. Scanning electron microscopy (SEM) images provided evidence of a homogeneous structure for the nanostructured mats. X-ray diffraction did not show differences in the crystallization of the nanofibers. This ongoing research confirms the possibility of incorporation of candeia essential oil in the production of nanofibers that will be studied for multipurpose applications.

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Modification of electrospun nylon nanofibers using layer-by-layer films for application in flow injection electronic tongue: Detection of paraoxon pesticide in corn crop

Cited by 51 publications

References 37 publications

Electrospun nanofibrous membranes for solid‐phase extraction of estriol from aqueous solution

Electrospun nanofibrous membranes for solid‐phase extraction of estriol from aqueous solution

A Review on Biopolymer-Based Fibers via Electrospinning and Solution Blowing and Their Applications

Nanostructured Polylactic Acid/Candeia Essential Oil Mats Obtained by Electrospinning

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