scholarly journals Fabrication and Super-Antibacterial Property of Nanosilver/Sericin/Poly(ethylene oxide) Nanofibers through Electrospinning-Combined Postdeposition Method

2016 ◽  
Vol 2016 ◽  
pp. 1-7 ◽  
Author(s):  
Jia Li ◽  
Bo-Xiang Wang ◽  
Yi-Fan Cui ◽  
Zhi-Cai Yu ◽  
Xu Hao ◽  
...  
Keyword(s):  
Escherichia Coli ◽  
Ethylene Oxide ◽  
Antibacterial Property ◽  
Silver Content ◽  
Antibacterial Properties ◽  
Bacterial Reduction ◽  
E Coli ◽  
Poly Ethylene Oxide ◽  
Poly Ethylene ◽  
Nanofiber Mats

Nanosilver particle has been used in the nanofiber mats by mixing the nanosilver with the spinning solution for improving the antibacterial property. Although studies have shown that the antibacterial property of nanofiber mats gets increasing, the higher silver content and the larger released resistance of nanosilver from nanofiber mats are obvious. Here, the electrospinning-combined postdeposition method was used to prepare the nanosilver/sericin/poly(ethylene oxide) (Ag/SS/PEO) nanofiber mats and the bacterial reduction rates againstStaphylococcus aureus(S. aureus) andEscherichia coli(E. coli) were analyzed. We found that the Ag/SS/PEO nanofiber mats were excellent antibacterial properties at the lower silver content and the bacterial reduction rates againstS. aureusandE. coliall reached above 99.99%. Our data suggests that the antibacterial property can be improved by introducing the electrospinning-combined postdeposition method.

scholarly journals Fabrication and Properties of High-Content Keratin/Poly (Ethylene Oxide) Blend Nanofibers Using Two-Step Cross-Linking Process

2015 ◽  
Vol 2015 ◽  
pp. 1-7 ◽  
Author(s):  
Yong Liu ◽  
Xia Yu ◽  
Jia Li ◽  
Jie Fan ◽  
Meng Wang ◽  
...  
Keyword(s):  
Ethylene Oxide ◽  
Average Diameter ◽  
Diglycidyl Ether ◽  
Cross Linking ◽  
Electrospun Fibers ◽  
Hydrophobic Property ◽  
Poly Ethylene Oxide ◽  
Cross Linker ◽  
Poly Ethylene ◽  
Nanofiber Mats

High-content keratin/poly (ethylene oxide) (PEO) (90/10) blend nanofibers were prepared by electrospinning combined with a two-step cross-linking process. The keratin/PEO aqueous solution was firstly mixed with ethylene glycol diglycidyl ether (EGDE) as cross-linker and then electrospun into nanofibers. The resulting nanofibrous mats were cross-linked with EGDE vapor to decrease the solubility of nanofibers in water. The morphologies and properties of electrospun fibers were investigated by SEM, FTIR, TG, XRD, and contact angle testing, respectively. The results showed that the morphologies of nanofibers were uniform at the fiber average diameter of 300 nm with negligible bead defects by adding EGDE to keratin/PEO solutions. The cross-linking results showed that EGDE vapor could improve the hydrophobic property of blended nanofibers. The crystallinity of the keratin/PEO blend nanofiber mat increased from 13.14% for the uncross-linked sample to 21.54% and 35.15% for the first cross-linked and second cross-linked samples, respectively. Free defect nanofiber mats with high keratin content producing from this two-step cross-linking process are particularly promising for tissue engineering and cell-seeded scaffold.

Crosslinked, electrospun chitosan–poly(ethylene oxide) nanofiber mats

2008 ◽  
Vol 109 (2) ◽  
pp. 968-975 ◽  
Author(s):  
Jennifer L. Vondran ◽  
Wei Sun ◽  
Caroline L. Schauer
Keyword(s):  
Ethylene Oxide ◽  
Poly Ethylene Oxide ◽  
Poly Ethylene ◽  
Nanofiber Mats

A simple strategy for efficient preparation of networks based on poly(2-isopropenyl-2-oxazoline), poly(ethylene oxide), and selected biologically active compounds: Novel hydrogels with antibacterial properties

Soft Matter ◽  
2021 ◽  
Author(s):  
Bartosz Kopka ◽  
Bartłomiej Kost ◽  
Katarzyna Rajkowska ◽  
Andrzej Pawlak ◽  
Alina Kunicka-Styczyńska ◽  
...  
Keyword(s):  
Ethylene Oxide ◽  
Benzoic Acid ◽  
Polymer Networks ◽  
Antibacterial Properties ◽  
Biologically Active Compounds ◽  
Biologically Active ◽  
Active Compounds ◽  
Simple Strategy ◽  
Poly Ethylene Oxide ◽  
Poly Ethylene

Novel polymer networks composed of biocompatible, hydrophilic poly(2-isopropenyl-2-oxazoline), poly(ethylene oxide), and biologically active compounds (cinnamic acid, benzoic acid or eugenol) were developed for potential antimicrobial applications.

Preparation of chitosan-containing nanofibres by electrospinning of chitosan/poly(ethylene oxide) blend solutions

e-Polymers ◽  
2004 ◽  
Vol 4 (1) ◽  
Author(s):  
Maria Spasova ◽  
Nevena Manolova ◽  
Dilyana Paneva ◽  
Iliya Rashkov
Keyword(s):  
Field Strength ◽  
Ethylene Oxide ◽  
Applied Field ◽  
Total Concentration ◽  
E Coli ◽  
Antimycotic Activity ◽  
Poly Ethylene Oxide ◽  
Antimycotic Agent ◽  
Model Drug ◽  
Poly Ethylene

Abstract The first successful preparation of chitosan-containing nanofibres was achieved by electrospinning of chitosan/poly(ethylene oxide) (PEO) blend aqueous solutions. The diameters of the nanofibres were in the range 40 - 290 nm and decreased with increasing chitosan content and decreasing total concentration. An increase of the applied field strength leads to an increase of the diameter of the nanofibres and to a broadening of the size distribution. The possibility to prepare nanofibres containing a model drug - potassium 5-nitro-8-quinolinolate (K5N8Q), a broad-spectrum antimicrobial and antimycotic agent - was shown. The incorporation of K5N8Q in the nanofibres resulted in a decrease of the nanofibre diameters and the appearance of bead-shaped defects. Non-woven mats from the drugloaded nanofibres with composition chitosan : PEO = 1:1 (w/w) and 1% K5N8Q showed antibacterial and antimycotic activity against E. coli, S. aureus and C.albicans.

scholarly journals Biofunctionalization of Cork with Moringa oleifera Seeds and Use of PMA Staining and qPCR to Detect Viability of Escherichia coli

Water ◽  
2021 ◽  
Vol 13 (19) ◽  
pp. 2731
Author(s):  
Nury Infante ◽  
Refugio Rodríguez ◽  
Yaneth Bartolo ◽  
Olga Sánchez ◽  
Isabel Sanz ◽  
...  
Keyword(s):  
Escherichia Coli ◽  
Moringa Oleifera ◽  
Antibacterial Properties ◽  
Fractional Factorial ◽  
Target Sequence ◽  
Lacz Gene ◽  
Bacterial Reduction ◽  
E Coli ◽  
Polymerase Chain ◽  
Seed Extracts

Cork matrices biofunctionalized with Moringa oleifera seed extracts (MoSe) have potential for use as a biofilter with antibacterial properties to reduce waterborne pathogens. The aim of this study was to evaluate the effect of cork biofunctionalized with active antimicrobial compounds of MoSe (f-cork) on the inhibition of Escherichia coli (InhEc). The LacZ gene from a strain of E. coli was used as the target sequence using viability quantification Polymerase Chain Reaction (qPCR) and differentiation of viable and dead bacteria through selective cell viability PMA staining. To perform this, a 27−4 fractional factorial design and a biofiltration system were used to evaluate the effect of the active protein in MoSe immobilized in granulated cork on InhEc. We found that the potential for antimicrobial activity increased with f-cork for an effective maximal bacterial reduction (99.99%; p < 0.05). The effect of f-cork functionalized with MoSe on E. coli viability was of 0.024% and 0.005% for the cells exposed to PMA, respectively, being the relevant conditions in treatment 2: (0 L/min) without aeration, (5%) MoSe and (5 mm) cork particle. In conclusion, the f-cork functionalized with MoSe presented biosorbent and antibacterial properties that effectively reduced the E. coli growth.

scholarly journals Nanofiber Mats from DNA, SWNTs, and Poly(ethylene oxide) and Their Application in Glucose Biosensors

2008 ◽  
Vol 155 (5) ◽  
pp. K100 ◽  
Author(s):  
Yong Liu ◽  
Jun Chen ◽  
Nguyen Tuan Anh ◽  
Chee O. Too ◽  
Violeta Misoska ◽  
...  
Keyword(s):  
Ethylene Oxide ◽  
Glucose Biosensors ◽  
Poly Ethylene Oxide ◽  
Poly Ethylene ◽  
Nanofiber Mats

Electrospinning of Sodium Alginate with Poly(ethylene oxide), Gelatin and Nanometer Silver Colloid

2009 ◽  
Vol 610-613 ◽  
pp. 1188-1191 ◽  
Author(s):  
Qing Shan Kong ◽  
Zi Sen Yu ◽  
Quan Ji ◽  
Yan Zhi Xia
Keyword(s):  
Mechanical Properties ◽  
Ethylene Oxide ◽  
Sodium Alginate ◽  
Silver Colloid ◽  
Biocompatible Polymer ◽  
Water Property ◽  
Poly Ethylene Oxide ◽  
Poly Ethylene ◽  
Nanofiber Mats ◽  
Morphology And Mechanical Properties

In this study, biocompatible polymer poly(ethylene oxide) (PEO), gelation (denatured collagen) and nanometer silver colloid was added to the electrospinnning solution of alginate sodium to get anti-bacterial nanofiber mats. The morphology and mechanical properties of the electrospun mats have been investigated. Smooth fibers with diameters around 300 nm were obtained from 4.0 % solutions of varied alginate/PEO/gelation proportion. The anti-water property of the electrospun mats has been improved by crosslink with glutaraldehyde acetone solution and aqueous calcium chloride and ethanol.

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