Mutual protection against UV aging of EVA composites using highly active optical conversion additives

RSC Advances ◽  
2014 ◽  
Vol 4 (74) ◽  
pp. 39316-39321 ◽  
Author(s):  
Jing Tao ◽  
Yaru Ni ◽  
Chunhua Lu ◽  
Jie Chen ◽  
Yaqiong Yuan ◽  
...  
Keyword(s):  
Rare Earth ◽  
Vinyl Acetate ◽  
Ethylene Vinyl Acetate ◽  
Uv Degradation ◽  
Organic Complex ◽  
Uv Aging ◽  
Optical Conversion ◽  
Highly Active ◽  
Acetate Copolymer ◽  
Ethylene Vinyl Acetate Copolymer

The mutual ultraviolet (UV) degradation protection and optical conversion mechanism of ethylene-vinyl acetate copolymer (EVA) rare earth organic complex (REOC) composite were investigated.

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.

Role of montmorillonite in flame retardancy of ethylene–vinyl acetate copolymer

2006 ◽  
Vol 91 (3) ◽  
pp. 593-599 ◽  
Author(s):  
Andrea Szép ◽  
András Szabó ◽  
Nikoletta Tóth ◽  
Péter Anna ◽  
György Marosi
Keyword(s):  
Vinyl Acetate ◽  
Flame Retardancy ◽  
Ethylene Vinyl Acetate ◽  
Acetate Copolymer ◽  
Ethylene Vinyl Acetate Copolymer
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