Preparation and Rheological Characteristics of Ethylene‐Vinyl Acetate Copolymer/Organoclay Nanocomposites

In the study, highly filled superconcentrates based on various grades of ethylene-vinylacetate copolymer (EVA) and microcrystalline cellulose (MCC) were studied. It is assumed that adding superconcentrates to various polyolefins will make them biodegradable in the environment. The influence of EVA rheological characteristics and the content of vinyl acetate (VA) groups on the properties of the superconcentrates were studied. It was shown that increasing the concentration of VA groups in EVA leads to an increase in the elongation at break of the composites; increase in EVA melt flow index (MFI) greatly reduces the basic mechanical properties of the composite.

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Ethylene Vinyl Acetate Copolymer Excipients: Low Temperatures Extrusion Processibility and Controlled Release

10.26226/morressier.57ea3d6ad462b8028d88cb82 ◽

2016 ◽

Author(s):

Bin Zhang

Keyword(s):

Controlled Release ◽

Vinyl Acetate ◽

Low Temperatures ◽

Ethylene Vinyl Acetate ◽

Acetate Copolymer ◽

Ethylene Vinyl Acetate Copolymer

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Flame retardancy effect of phosphorus graphite nanoplatelets on ethylene‐vinyl acetate copolymer: Physical blending versus chemical modification

Polymers for Advanced Technologies ◽

10.1002/pat.5432 ◽

2021 ◽

Author(s):

Ghane Moradkhani ◽

Mohammad Fasihi ◽

Loic Brison ◽

Fouad Laoutid ◽

Henri Vahabi ◽

...

Keyword(s):

Chemical Modification ◽

Vinyl Acetate ◽

Flame Retardancy ◽

Ethylene Vinyl Acetate ◽

Graphite Nanoplatelets ◽

Physical Blending ◽

Acetate Copolymer ◽

Ethylene Vinyl Acetate Copolymer

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

Sensors ◽

10.3390/s18124361 ◽

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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