Effect of polymer concentration and annealing temperature on TiO2-PVP composite nanofiber mats prepared with homemade electrospinning

2018 ◽  
Author(s):  
Charan Kuchi ◽  
P. Sreedhara Reddy
Keyword(s):  
Annealing Temperature ◽  
Polymer Concentration ◽  
Composite Nanofiber ◽  
Nanofiber Mats

Composite nanofiber mats consisting of hydroxyapatite and titania for biomedical applications

2010 ◽  
pp. n/a-n/a ◽  
Author(s):  
Hong Mi Kim ◽  
Won-Pyo Chae ◽  
Ki-Whan Chang ◽  
Sungsu Chun ◽  
Sukyoung Kim ◽  
...  
Keyword(s):  
Biomedical Applications ◽  
Composite Nanofiber ◽  
Nanofiber Mats

scholarly journals Antimicrobial Activity of Electrospun Polyvinyl Alcohol Nanofibers Filled with Poly[2-(tert-butylaminoethyl) Methacrylate]-Grafted Graphene Oxide Nanosheets

Polymers ◽  
2020 ◽  
Vol 12 (7) ◽  
pp. 1449 ◽  
Author(s):  
Chien-Lin Huang ◽  
Kun-Mu Lee ◽  
Zheng-Xian Liu ◽  
Ruo-Yu Lai ◽  
Chih-Kuang Chen ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Radical Polymerization ◽  
Graphene Nanosheets ◽  
Wound Care ◽  
Physical Treatment ◽  
Volume Percentage ◽  
Antimicrobial Efficiency ◽  
Composite Nanofiber ◽  
Potential Applications ◽  
Nanofiber Mats

A novel cationic polymer, poly[2-(tert-butylaminoethyl) methacrylate] (PTA), effectively kills various strains of bacteria with low toxicity to tissue cells. Graphene-based materials demonstrate exceptional electron transport capability, antibacterial activity, favorable nontoxicity, and versatile applicability. PTA can be grafted onto the graphene oxide (GO) surface (GO-g-PTA) to enhance the antimicrobial efficiency of the latter against Staphylococcus aureus (S. aureus). In this study, GO-g-PTA powders were successfully synthesized via free radical polymerization (GO-g-PTA-F) and atom transfer radical polymerization (GO-g-PTA-A). The antimicrobial efficiencies of graphene nanosheets (GNSs), GO-g-PTA-F, and GO-g-PTA-A were then investigated. Addition of GNS, GO-g-PTA-F, and GO-g-PTA-A to the PVA nanofibers was carried out elucidate the effects of filler amount and physical treatment on the morphology, microstructure, crystallization behaviors, antimicrobial efficiency, and cytotoxicity of the composite fibers. Finally, the potential applications of electrospun PVA/GNS, PVA/GO-g-PTA-F, and PVA/GO-g-PTA-A composite nanofiber mats to chronic wound care were evaluated. The resulting PVA/GO-g-PTA-A composite nanofiber mats showed enhanced antimicrobial ability against S. aureus compared with the PVA/GNS and PVA/GO-g-PTA-F composite nanofiber mats at the same filler volume percentage.

Preparation and characterization of polyvinylidene fluoride/polysulfone-amide composite nanofiber mats

2018 ◽  
Vol 110 (6) ◽  
pp. 815-821 ◽  
Author(s):  
Xu Tian ◽  
Binjie Xin ◽  
Weihong Gao ◽  
Shixin Jin ◽  
Zhuoming Chen
Keyword(s):  
Polyvinylidene Fluoride ◽  
Composite Nanofiber ◽  
Nanofiber Mats

Removal of heavy metal chromium using cross-linked chitosan composite nanofiber mats

2018 ◽  
Vol 120 ◽  
pp. 213-221 ◽  
Author(s):  
Minjuan Jiang ◽  
Tong Han ◽  
Jinhu Wang ◽  
Linjun Shao ◽  
Chenze Qi ◽  
...  
Keyword(s):  
Heavy Metal ◽  
Composite Nanofiber ◽  
Nanofiber Mats ◽  
Chitosan Composite

scholarly journals Correlation between Structures and Antioxidant Activities of Polyvinylpyrrolidone/Garcinia mangostana L. Extract Composite Nanofiber Mats Prepared Using Electrospinning

2017 ◽  
Vol 2017 ◽  
pp. 1-10 ◽  
Author(s):  
Ida Sriyanti ◽  
Dhewa Edikresnha ◽  
Annisa Rahma ◽  
Muhammad Miftahul Munir ◽  
Heni Rachmawati ◽  
...  
Keyword(s):  
Drug Delivery ◽  
Surface Area ◽  
Intermolecular Interactions ◽  
Antioxidant Activities ◽  
High Surface ◽  
Water Soluble ◽  
Garcinia Mangostana ◽  
Sem Images ◽  
Composite Nanofiber ◽  
Nanofiber Mats

Nanofiber mats of polyvinyl(pyrrolidone) (PVP) with Garcinia mangostana extract (GME) as the encapsulated drug have been developed using electrospinning. SEM images of all electrospun PVP/GME composite nanofiber mats showed that they had similar and smooth morphology, no beads, and spindle shape. Its average diameter decreased and its surface area therefore increased with the decrease of its PVP concentration. The benefit of high surface area is obvious in drug delivery systems for poorly water-soluble drugs. Their FTIR spectra indicated that PVP and GME interacted intermolecularly via hydrogen bonds in the composite nanofiber mats. A conformational change in the C-H chain of PVP occurred in the composite nanofiber mats due to the intermolecular interactions. Their XRD patterns confirmed that they were amorphous because of amorphization during electrospinning. The XRD analyses also strengthened the FTIR studies; namely, GME and PVP formed intermolecular interactions in the electrospun composite nanofiber mats. As a result, GME as the encapsulated drug was molecularly dispersed in the electrospun PVP nanofiber matrix that functioned as a drug delivery system. From the 2,2-diphenyl-1-picrylhydrazyl (DPPH) assay, the composite nanofiber mats exhibited very high antioxidant activities despite having been exposed to high voltage during electrospinning. Therefore, they are potential antioxidant products for food and pharmaceutics.

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