Nanocomposite photoactuators based on an ethylene vinyl acetate copolymer filled with carbon nanotubes

2013 ◽  
Vol 186 ◽  
pp. 701-710 ◽  
Author(s):  
Klaudia Czaniková ◽  
Núria Torras ◽  
Jaume Esteve ◽  
Igor Krupa ◽  
Peter Kasák ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Vinyl Acetate ◽  
Ethylene Vinyl Acetate ◽  
Acetate Copolymer ◽  
Ethylene Vinyl Acetate Copolymer

Carbon nanotubes induced nonisothermal crystallization of ethylene–vinyl acetate copolymer

2004 ◽  
Vol 58 (30) ◽  
pp. 3967-3970 ◽  
Author(s):  
Sha-Ni Li ◽  
Zhong-Ming Li ◽  
Ming-Bo Yang ◽  
Zong-Qian Hu ◽  
Xiang-Bin Xu ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Vinyl Acetate ◽  
Ethylene Vinyl Acetate ◽  
Nonisothermal Crystallization ◽  
Acetate Copolymer ◽  
Ethylene Vinyl Acetate Copolymer

Dielectric Properties of Ethylene Vinyl Acetate Copolymer Composites Filled with Carbon Nanotubes, Graphene Nanoplatelets and Iron Oxide Nanoparticles

2019 ◽  
Vol 800 ◽  
pp. 195-199
Author(s):  
Anda Barkāne ◽  
Sergejs Gaidukovs ◽  
Jānis Kajaks ◽  
Oskars Platnieks
Keyword(s):  
Carbon Nanotubes ◽  
Vinyl Acetate ◽  
Multiwall Carbon Nanotubes ◽  
Ethylene Vinyl Acetate ◽  
Specific Electrical Conductivity ◽  
Compression Moulding ◽  
Passive Components ◽  
Nanoparticle Effect ◽  
Acetate Copolymer ◽  
Ethylene Vinyl Acetate Copolymer

Ethylene vinyl-acetate copolymer (EVA) composite materials containing multiwall carbon nanotubes (MWCNT), graphene (Gr) and iron (III, IV) oxide (Fe3O4) nanoparticles where processed by melt blending. Film specimens were prepared by using compression moulding method. All nanoparticles content in samples was chosen equal to 20 wt.%. The material dielectric spectroscopy was used in a range of 10-2 Hz to 107 Hz to investigate nanoparticle effect on the dielectric active (ε’) and passive components (ε’’), specific electrical conductivity (σ’) and dielectric loss (tg) for the characterization of the dissipation of electromagnetic energy.

scholarly journals Indicator Layers Based on Ethylene-Vinyl Acetate Copolymer (EVA) and Dicyanovinyl Azobenzene Dyes for Fast and Selective Evaluation of Vaporous Biogenic Amines

Sensors ◽  
2018 ◽  
Vol 18 (12) ◽  
pp. 4361
Author(s):  
Tinkara Mastnak ◽  
Aleksandra Lobnik ◽  
Gerhard Mohr ◽  
Matjaž Finšgar
Keyword(s):  
Biogenic Amines ◽  
Vinyl Acetate ◽  
Colour Change ◽  
Ethylene Vinyl Acetate ◽  
Yellow Orange ◽  
Colour Changes ◽  
Limit Sensitivity ◽  
Linear Concentration Range ◽  
Acetate Copolymer ◽  
Ethylene Vinyl Acetate Copolymer

The article presents naked-eye methods for fast, sensitive, and selective detection of isopentylamine and cadaverine vapours based on 4-N,N-dioctylamino-4′-dicyanovinylazobenzene (CR-528) and 4-N,N-dioctylamino-2′-nitro-4′-dicyanovinylazobenzene (CR-555) dyes immobilized in ethylene-vinyl acetate copolymer (EVA). The reaction of CR-528/EVA and CR-555/EVA indicator layers with isopentylamine vapours caused a vivid colour change from pink/purple to yellow/orange-yellow. Additionally, CR-555/EVA showed colour changes upon exposure to cadaverine. The colour changes were analysed by ultraviolet–visible (UV/VIS) molecular absorption spectroscopy for amine quantification, and the method was partially validated for the detection limit, sensitivity, and linear concentration range. The lowest detection limits were reached with CR-555/EVA indicator layers (0.41 ppm for isopentylamine and 1.80 ppm for cadaverine). The indicator layers based on EVA and dicyanovinyl azobenzene dyes complement the existing library of colorimetric probes for the detection of biogenic amines and show great potential for food quality control.

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