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Other literature type . 2024
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Relaxation of electric charge in polymer blends based on low-density polyethylene and copolymer of ethylene with vinyl acetate

Релаксация электрического заряда в полимерных смесях на основе полиэтилена высокого давления и сополимера этилена с винилацетатом
Authors: Karulina, Elena; Galikhanov, Mansur; Castro Arata, Rene Alejandro; Reztsov, Tikhon; Fomicheva, Elena;

Relaxation of electric charge in polymer blends based on low-density polyethylene and copolymer of ethylene with vinyl acetate

Abstract

В статье представлены результаты исследования полимерных пленок на основе смеси полиэтилена высокого давления (низкой плотности) (ПЭВД) с сополимером этилена и винилацетата (СЭВА, сэвилен). Использование методов термоактивационной, инфракрасной и диэлектрической спектроскопии позволило описать процессы релаксации электрического заряда в исследуемых полимерных смесях. Исходя из полученных данных, было сделано предположение о существовании в образцах процесса альфа-релаксации в области 250 – 280 K. Обнаружено повышенное значение энергии активации, соответствующей релаксационному процессу, в образцах ПЭВД/СЭВА, по сравнению с образцом ПЭВД. Этот эффект трактуется как появление в смесях более глубоких ловушек носителей заряда. Зависимости, полученные методом диэлектрической спектроскопии, свидетельствуют о наличии в объектах исследования прыжкового механизма проводимости.

This paper presents the results of a study of polymer films based on a blend of low-density (high-pressure) polyethylene (LDPE, HPP) with a copolymer of ethylene and vinyl acetate (EVA, sevilen). The use of thermal activation, infrared and dielectric spectroscopy methods made it possible to describe the electric charge relaxation processes in the polymer blends investigated. The data obtained suggested the presence of an α-relaxation process in the samples in the temperature range 250–280 K. An increased value of the activation energy of this process was also found in the LDPE/EVA samples compared to that in the LDPE one. This effect has been interpreted as the appearance of deeper traps of charge carriers in the blends. The dependences obtained by dielectric spectroscopy indicated the presence of hopping conductivity in the subjects of research.

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Keywords

polyethylene, copolymer of ethylene with vinyl acetate, полиэтилен, Physics, QC1-999, дипольно-сегментальная релаксация, thermo-activation spectroscopy, сополимер этилена с винилацетатом, QA1-939, thermostimulated depolarization, термостимулированная деполяризация, термоактивационная спектроскопия, Mathematics

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
Average
Average
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gold