scholarly journals Electrically Conductive Electrospun Polymeric Mats for Sensing Dispersed Vegetable Oil Impurities in Wastewater

Processes ◽  
2019 ◽  
Vol 7 (12) ◽  
pp. 906 ◽  
Author(s):  
Abdolali Moghaddasi ◽  
Patrik Sobolčiak ◽  
Anton Popelka ◽  
Kishor Kumar Sadasivuni ◽  
Zdeno Spitalsky ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Electrical Resistivity ◽  
Vegetable Oil ◽  
Multiwall Carbon Nanotubes ◽  
Dimethyl Formamide ◽  
Gold Electrodes ◽  
Active Sensing ◽  
Electrically Conductive ◽  
Styrene Copolymer ◽  
Multiwall Carbon

This paper addresses the preparation of electrically conductive electrospun mats on a base of styrene-isoprene-styrene copolymer (SIS) and multiwall carbon nanotubes (CNTs) and their application as active sensing elements for the detection of vegetable oil impurities dispersed within water. The most uniform mats without beads were prepared using tetrahydrofuran (THF)/dimethyl formamide (DMF) 80:20 (v/v) as the solvent and 13 wt.% of SIS. The CNT content was 10 wt.%, which had the most pronounced changes in electrical resistivity upon sorption of the oil component. The sensors were prepared by deposition of the SIS/CNT layer onto gold electrodes through electrospinning and applied for sensing of oil dispersed in water for 50, 100, and 1000 ppm.

Effect of Low-Content of Graphene and Carbon Nanotubes on Dielectric Properties of Polyethylene Oxide Solid Composite Electrolyte

2016 ◽  
Vol 721 ◽  
pp. 18-22 ◽  
Author(s):  
Aleksandra Jurkane ◽  
Sergejs Gaidukov
Keyword(s):  
Carbon Nanotubes ◽  
Polyethylene Oxide ◽  
Multiwall Carbon Nanotubes ◽  
Lithium Triflate ◽  
Composite Electrolyte ◽  
Electrically Conductive ◽  
Pressing Method ◽  
Dielectric Characteristics ◽  
Controlled Structure ◽  
Multiwall Carbon

Preparation of polymeric nano-composites with finely controlled structure, especially, at nano-scale, is still one of the most perspective modification ways of the properties of polymeric composites. Paper actuality is based on growing need for non-combustible and safe battery electrolytes, which operate portable electronic devices. Polyethylene oxide solid composite electrolytes containing lithium triflate, multiwall carbon nanotubes and graphene by solution casting and hot-pressing method were prepared. Dielectric spectroscopy, surface resistivity measurements were performed to evaluate nanoparticles influence on the dielectric characteristics of the electrolyte material. Observed enhancement of dielectric conductivity is connected to the addition of the Li+ ions and incorporation of the electrically conductive nanoparticles to the polymer electrolyte

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