Antibacterial electrospun chitosan/poly(vinyl alcohol) nanofibers containing silver nitrate and titanium dioxide

2009 ◽  
Vol 111 (6) ◽  
pp. 2892-2899 ◽  
Author(s):  
Bokgi Son ◽  
Bong-Yeol Yeom ◽  
Sang Hun Song ◽  
Chang-Soo Lee ◽  
Taek Sung Hwang
Keyword(s):  
Titanium Dioxide ◽  
Silver Nitrate ◽  
Vinyl Alcohol ◽  
Poly Vinyl Alcohol

scholarly journals The Design, Characterization and Antibacterial Activity of Heat and Silver Crosslinked Poly(Vinyl Alcohol) Hydrogel Forming Dressings Containing Silver Nanoparticles

Nanomaterials ◽  
2021 ◽  
Vol 11 (1) ◽  
pp. 96
Author(s):  
John Jackson ◽  
Helen Burt ◽  
Dirk Lange ◽  
In Whang ◽  
Robin Evans ◽  
...  
Keyword(s):  
Silver Nanoparticles ◽  
Antibacterial Activity ◽  
Silver Nitrate ◽  
Vinyl Alcohol ◽  
Unmet Need ◽  
Chemical Characterization ◽  
Wound Dressings ◽  
Poly Vinyl Alcohol ◽  
Burn Wound

The prompt treatment of burn wounds is essential but can be challenging in remote parts of Africa, where burns from open fires are a constant hazard for children and suitable medical care may be far away. Consequently, there is an unmet need for an economical burn wound dressing with a sustained antimicrobial activity that might be manufactured locally at low cost. This study describes and characterizes the novel preparation of a silver nitrate-loaded/poly(vinyl alcohol) (PVA) film. Using controlled heating cycles, films may be crosslinked with in situ silver nanoparticle production using only a low heat oven and little technical expertise. Our research demonstrated that heat-curing of PVA/silver nitrate films converted the silver to nanoparticles. These films swelled in water to form a robust, wound-compatible hydrogel which exhibited controlled release of the antibacterial silver nanoparticles. An optimal formulation was obtained using 5% (w/w) silver nitrate in PVA membrane films that had been heated at 140 °C for 90 min. Physical and chemical characterization of such films was complemented by in vitro studies that confirmed the effective antibacterial activity of the released silver nanoparticles against both gram positive and negative bacteria. Overall, these findings provide economical and simple methods to manufacture stable, hydrogel forming wound dressings that release antibiotic silver over prolonged periods suitable for emergency use in remote locations.

A novel hybrid anion exchange membrane for high performance microbial fuel cells

RSC Advances ◽  
2015 ◽  
Vol 5 (6) ◽  
pp. 4659-4663 ◽  
Author(s):  
Hu-Chun Tao ◽  
Xiao-Nan Sun ◽  
Ying Xiong
Keyword(s):  
Titanium Dioxide ◽  
Fuel Cells ◽  
Anion Exchange ◽  
Microbial Fuel Cells ◽  
Vinyl Alcohol ◽  
High Performance ◽  
Anion Exchange Membrane ◽  
Poly Vinyl Alcohol ◽  
Exchange Membrane

A novel titanium dioxide (TiO2)–quaternized poly(vinyl alcohol) (QAPVA) hybrid anion exchange membrane (T membrane) is prepared, and its feasibility for use in microbial fuel cells (MFCs) is investigated in this study.

Reaction mechanism of thermally-induced electric conduction of poly(vinyl alcohol)–silver nitrate hybrid films

RSC Advances ◽  
2016 ◽  
Vol 6 (61) ◽  
pp. 56728-56737 ◽  
Author(s):  
Yong Gan ◽  
Shibing Bai ◽  
Shouliang Hu ◽  
Xiang Zhao ◽  
Yuefang Li
Keyword(s):  
Reaction Mechanism ◽  
Silver Nitrate ◽  
Metal Nanoparticles ◽  
Vinyl Alcohol ◽  
Hybrid Composites ◽  
Functional Materials ◽  
Poly Vinyl Alcohol ◽  
Electric Conduction ◽  
Hybrid Films ◽  
Thermally Induced

The combination of metal nanoparticles and polymers endows their hybrid composites with a number of unique features and opens a new way to fabricate novel functional materials.

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