Rapid capture of Ponceau S via a hierarchical organic–inorganic hybrid nanofibrous membrane

2016 ◽  
Vol 4 (15) ◽  
pp. 5423-5427 ◽  
Author(s):  
Guihua Li ◽  
Zhigao Zhu ◽  
Benyu Qi ◽  
Guojuan Liu ◽  
Ping Wu ◽  
...  
Keyword(s):  
Coating Layer ◽  
Nanofibrous Membrane ◽  
Inorganic Hybrid ◽  
Ponceau S ◽  
Nanofibrous Membranes ◽  
Composite Carbon

Hierarchical composite carbon nanofibrous membranes, comprising a high content of magnetic FeOx nanoparticles and an ultrathin PDA–PEI coating layer, were directly prepared using co-electrospun Fe3+/PAN precursors and dopamine self-polymerization.

scholarly journals Starch-based and multi-purpose nanofibrous membrane for high efficiency nanofiltration

RSC Advances ◽  
2017 ◽  
Vol 7 (56) ◽  
pp. 35368-35375 ◽  
Author(s):  
Sarekha Woranuch ◽  
Autchara Pangon ◽  
Kantapat Puagsuntia ◽  
Nakarin Subjalearndee ◽  
Varol Intasanta
Keyword(s):  
High Efficiency ◽  
Rice Flour ◽  
Nanofibrous Membrane ◽  
Nanofibrous Membranes

The objective of the present work is to develop nanofibrous membranes from rice-flour based nanofibers containing PVA for high efficiency filtration.

Nanofibrous Membrane of Silk Fibroin/Cellulose Acetate Blend for Heavy Metal Ion Adsorption

2010 ◽  
Vol 148-149 ◽  
pp. 1431-1435 ◽  
Author(s):  
Wei Tao Zhou ◽  
Jian Xin He ◽  
Shi Zhong Cui ◽  
Wei Dong Gao
Keyword(s):  
Heavy Metal ◽  
Metal Ions ◽  
Cellulose Acetate ◽  
Silk Fibroin ◽  
Metal Ion ◽  
Nanofibrous Membrane ◽  
Heavy Metal Ion ◽  
Ion Adsorption ◽  
Metal Ion Adsorption ◽  
Nanofibrous Membranes

Silk fibroin/cellulose acetate blend Nanofibrous membranes were prepared by electro- spinning and their performances were evaluated as a heavy metal ion adsorbent. The electrospun nanofibrous membranes were comprised of randomly oriented ultra-fine fibers of 100-600nm diameters. As a result of field emission electron microscope (FEEM), compared with pure nanofibrous membranes, the anti-felting shrinkage of SF/CA blend nanofibrous membranes with 20% CA content was markedly improved after treatment with 100% ethanol. Metal ion adsorption test was performed with Cu2+ as a model heavy metal ion in a stock solution. The pure SF nanofibrous membranes exhibited high metal ion capacities compared with that pure CA nanofibrous membrane. Especially, the SF/CA blend nanofibrous membranes had an exceptional performance for the adsorption of metal ions, and the maximum milligrams per gram of metal ions adsorbed reached 22.8mg/g for Cu2+. This indicated that SF and CA had synergetic effect.

One-step nanotopography construction by polyaniline polymerization for a superhydrophobic nanofibrous membrane towards direct contact membrane distillation

2019 ◽  
Vol 6 (8) ◽  
pp. 2553-2564 ◽  
Author(s):  
Lingling Zhong ◽  
Zhigao Zhu ◽  
Yu Han ◽  
Qiao Wang ◽  
Dongmei Liu ◽  
...  
Keyword(s):  
Direct Contact ◽  
Water Flux ◽  
High Water ◽  
Membrane Distillation ◽  
Nanofibrous Membrane ◽  
Direct Contact Membrane Distillation ◽  
One Step ◽  
Nanofibrous Membranes

In situ polymerization of aniline is used to prepare superhydrophobic PVDF nanofibrous membranes for direct contact membrane distillation with high water flux and long wetting times.

OLIGOSACCHARIDE FUNCTIONALIZED NANOFIBROUS MEMBRANE

2006 ◽  
Vol 05 (01) ◽  
pp. 1-11 ◽  
Author(s):  
S. KAUR ◽  
M. KOTAKI ◽  
Z. MA ◽  
R. GOPAL ◽  
S. RAMAKRISHNA ◽  
...  
Keyword(s):  
Organic Molecule ◽  
Organic Waste ◽  
Organic Molecules ◽  
Waste Treatment ◽  
Nanofibrous Membrane ◽  
Selective Agent ◽  
Small Organic Molecules ◽  
Potential Applications ◽  
Nanofibrous Membranes ◽  
Organic Waste Treatment

An attempt was made to incorporate β-Cyclodextrin (β-CD) onto the surface of the nanofiber to target potential applications in organic waste treatment. Phenylcarbomylated and azido phenylcarbomylated β-CD were successfully blended with poly(methyl methacrylate) (PMMA) and electrospun into nanofibrous membrane respectively with an approximate diameter of 900 nm. The presence of this selective agent on the surface of the nanofibers was confirmed by ATR-FTIR and XPS. To determine the functionalized membranes ability to capture small organic molecules, a solution containing phenolphthalein (PHP), a small organic molecule, was used. The results obtained showed that the functionalized nanofibrous membranes were able to effectively capture the PHP molecules. Thus the developed β-CD functionalized nanofibrous membranes may have the potential to capture similar small organic molecules in organic waste.

Electrospinning preparation of a H4SiW12O40/polycaprolactam composite nanofibrous membrane and its greatly enhanced photocatalytic activity and mechanism

RSC Advances ◽  
2016 ◽  
Vol 6 (15) ◽  
pp. 12491-12496 ◽  
Author(s):  
Wei Li ◽  
Tingting Li ◽  
Xuegang Ma ◽  
Yuanliang Li ◽  
Libao An ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Average Diameter ◽  
Nanofibrous Membrane ◽  
Electrospinning Technique ◽  
Nanofibrous Membranes

H4SiW12O40/polycaprolactam (PA6) composite nanofibrous membranes with a minimum average diameter of ∼70 nm were prepared by an electrospinning technique.

scholarly journals Novel Polyvinyl Butyral/Monoacylglycerol Nanofibrous Membrane with Antifouling Activity

Materials ◽  
2020 ◽  
Vol 13 (17) ◽  
pp. 3662
Author(s):  
Petra Peer ◽  
Jana Sedlaříková ◽  
Magda Janalíková ◽  
Liliana Kučerová ◽  
Pavel Pleva
Keyword(s):  
Antibacterial Agent ◽  
Microbial Contamination ◽  
Antibacterial Properties ◽  
Polyvinyl Butyral ◽  
Electrospinning Process ◽  
Nanofibrous Membrane ◽  
The Novel ◽  
Antifouling Activity ◽  
Nanofibrous Membranes ◽  
Functional Membranes

Monoacylglycerols (MAGs) have proven of great interest to the foodstuffs industry due to the promising antibacterial activity they show for controlling microbial contamination. Prior to this paper, this antibacterial agent had not been incorporated in a nanofibrous membrane. This study details convenient fabrication of nanofibrous membranes based on polyvinyl butyral (PVB) containing various concentrations of monocaprin (MAG 10) by an electrospinning process. Increasing the concentration of MAG 10 caused differences to appear in the shape of the nanofibers, in addition to which the level of wettability was heightened. Besides exhibiting antibacterial properties, the functional membranes demonstrated especially good antifouling activity. The novel and efficient nanofibrous membranes described have the potential to find eventual application in medical or environmental fields.

Quaternary ammonium salt–modified polyacrylonitrile/polycaprolactone electrospun nanofibers with enhanced antibacterial properties

2021 ◽  
pp. 004051752199718
Author(s):  
Hongnan Zhang ◽  
Tingting Zhang ◽  
Qiaohua Qiu ◽  
Xiaohong Qin
Keyword(s):  
Antibacterial Properties ◽  
Electrospun Nanofibers ◽  
Tensile Tests ◽  
Nanofibrous Membrane ◽  
E Coli ◽  
Small Pore Size ◽  
Small Pore ◽  
Inhibition Zones ◽  
Nanofibrous Membranes ◽  
And Staphylococcus Aureus

In this experiment, octadecyltrimethylammonium chloride (STAC), a cationic antibacterial agent, was designed to modify hydrolyzed polyacrylonitrile (PAN) through tight electrostatic attraction. Then, the modified PAN was successfully electrospun with polycaprolactone (PCL) to obtain PCL/PAN-STAC nanofibrous membranes with enhanced mechanical properties. The modified PAN was characterized by Fourier transform infrared spectroscopy, thermogravimetric analysis and elemental analysis. The morphological, mechanical and antibacterial properties of nanofibrous membranes were investigated. The blended nanofibrous membrane presented a uniform and stable structure with small pore size. Tensile tests indicated that the mechanical property of PCL/PAN-STAC nanofibrous membrane was obviously enhanced by blending. Disk diffusion tests showed that the inhibition zones of PCL/PAN-STAC against Escherichia coli and Staphylococcus aureus were 7.56 ± 0.05 mm and 15.37 ± 0.34 mm, respectively. Shaking method indicated that the antibacterial activity against E. coli was as high as 96.20 ± 0.89% when the use of PCL/PAN-STAC reached 9 mg. Therefore, this antibacterial nanofibrous membrane is very favorable for applications such as protective filtration masks and wound dressing.

scholarly journals Modeling Analysis of Silk Fibroin/Poly(ε-caprolactone) Nanofibrous Membrane under Uniaxial Tension

Nanomaterials ◽  
2019 ◽  
Vol 9 (8) ◽  
pp. 1149 ◽  
Author(s):  
Yunlei Yin ◽  
Xinfei Zhao ◽  
Jie Xiong
Keyword(s):  
Silk Fibroin ◽  
Structural Characteristics ◽  
Geometric Model ◽  
Composite Membranes ◽  
Electrospinning Process ◽  
Nanofibrous Membrane ◽  
Modeling Analysis ◽  
Modeling Prediction ◽  
Mechanical Ability ◽  
Nanofibrous Membranes

Evaluating the mechanical ability of nanofibrous membranes during processing and end uses in tissue engineering is important. We propose a geometric model to predict the uniaxial behavior of randomly oriented nanofibrous membrane based on the structural characteristics and tensile properties of single nanofibers. Five types of silk fibroin (SF)/poly(ε-caprolactone) (PCL) nanofibers were prepared with different mixture ratios via an electrospinning process. Stress–strain responses of single nanofibers and nanofibrous membranes were tested. We confirmed that PCL improves the flexibility and ductility of SF/PCL composite membranes. The applicability of the analytical model was verified by comparison between modeling prediction and experimental data. Experimental stress was a little lower than the modeling results because the membranes were not ideally uniform, the nanofibers were not ideally straight, and some nanofibers in the membranes were not effectively loaded.

scholarly journals Facile Fabrication of Multi-Structured SiO2@PVDF-HFP Nanofibrous Membranes for Enhanced Copper Ions Adsorption

Polymers ◽  
2018 ◽  
Vol 10 (12) ◽  
pp. 1385 ◽  
Author(s):  
Haohong Pi ◽  
Rui Wang ◽  
Baona Ren ◽  
Xiuqin Zhang ◽  
Jing Wu
Keyword(s):  
Heavy Metal ◽  
Adsorption Capacity ◽  
Metal Ion ◽  
Polyvinylidene Fluoride ◽  
Nanofibrous Membrane ◽  
Heavy Metal Ion ◽  
Fiber Morphology ◽  
First Order ◽  
Pseudo First Order ◽  
Nanofibrous Membranes

The low-cost, heavy metal ion (Cu(II)) adsorptive multi-structured nanofibrous membranes of silicon oxide naonoparticles in-situ anchored polyvinylidene fluoride-hexafluoropropylene (SiO2@PVDF-HFP) fibers were fabricated by the facile electrospinning technique combined with sol–gel strategy. To explore the benefits of the structure-related Cu(II) adsorption capacity, the fiber diameters of SiO2@PVDF-HFP nanofibrous membranes were changed which also resulted in the change of their porosity. Taking advantage of the constructed multi-structures and efficient fiber morphology regulation which not only changed the PVDF-HFP nanofibrous membrane from hydrophobic to superhydrophilic but also increased the porosity of the membrane, the SiO2@PVDF-HFP nanofibrous membrane with a smaller diameter and a larger porosity exhibits higher Cu(II) adsorption capacity. The adsorption amount was approximate to 21.9 mg per gram of the membrane, which was higher than that of membranes with larger fiber diameter (smaller porosity) and the smooth one. Furthermore, the model isotherms of Freundlich and Langmuir, as well as the kinetic models of pseudo-first-order and pseudo-second-order were preferred to analyze the adsorption equilibrium data. The Freundlich model and the pseudo-first-order were well fitted to the adsorption experimental data. It not only uncovers the structure-related-property of multi-structured nanofibrous membranes, but also provides an efficient and facile way to design heavy metal ion adsorption materials.

scholarly journals Visible light active nanofibrous membrane for antibacterial wound dressing

2018 ◽  
Vol 3 (4) ◽  
pp. 439-446 ◽  
Author(s):  
Shuai Jiang ◽  
Beatriz Chiyin Ma ◽  
Wei Huang ◽  
Anke Kaltbeitzel ◽  
Gönül Kizisavas ◽  
...  
Keyword(s):  
Visible Light ◽  
Wound Dressing ◽  
Nanofibrous Membrane ◽  
Visible Light Active ◽  
Nanofibrous Membranes

Hydrogel nanofibrous membranes that show visible light-induced disinfection are developed for wound dressing application.

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