Enhanced mechanical properties of irradiated ethylene-vinyl acetate copolymer

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F70883521%3A28110%2F25%3A63595761" target="_blank" >RIV/70883521:28110/25:63595761 - isvavai.cz</a>

Result on the web

<a href="https://www.mdpi.com/2227-9717/13/5/1562" target="_blank" >https://www.mdpi.com/2227-9717/13/5/1562</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.3390/pr13051562" target="_blank" >10.3390/pr13051562</a>

Result language

angličtina

Original language name

Enhanced mechanical properties of irradiated ethylene-vinyl acetate copolymer

Original language description

This study investigated the effects of electron beam radiation on the room-temperature and high-temperature mechanical properties of two ethylene-vinyl acetate (EVA) copolymers, designated EVA 206 and EVA 212. These copolymers had varying vinyl acetate (VA) contents (6 wt.% and 12 wt.%), with the same melt flow index of 2.0 g/10 min. Samples were irradiated at doses ranging from 60 to 180 kGy. The impact of electron beam irradiation on the creep, frequency sweep, and stress–strain behaviors of the ethylene-vinyl acetate copolymers was evaluated using a dynamical mechanical analyzer (DMA). Crystallinity was measured using differential scanning calorimetry (DSC) and wide-angle X-ray diffraction (WAXD). Creep compliance was quantitatively analyzed using four-parameter and six-parameter models. While crosslinking had minimal influence on the room-temperature properties, it significantly affected the behavior at 150 °C. With increasing irradiation dose, creep compliance decreased, while the shear modulus, viscosity, and shear stress at a strain of 0.03 increased, indicating enhanced resistance to deformation. Crosslink density also increased with irradiation dose. EVA 212 with a higher vinyl acetate content exhibited a higher resistance to creep and better high-temperature mechanical properties across all measurements.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

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OECD FORD branch

10404 - Polymer science

Project

—

Continuities

S - Specificky vyzkum na vysokych skolach

Publication year

2025

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Processes

ISSN

2227-9717

e-ISSN

—

Volume of the periodical

13

Issue of the periodical within the volume

5

Country of publishing house

CH - SWITZERLAND

Number of pages

31

Pages from-to

nestránkováno

UT code for WoS article

001495737900001

EID of the result in the Scopus database

2-s2.0-105006563914