Relationship between the Microstructure and Performance of Graphene/Polyethylene Composites Investigated by Positron Annihilation Lifetime Spectroscopy

The quantitative characterization of microstructure is most desirable for the establishment of structure-property relationships in polymer nanocomposites. In this work, the effects of graphene on the microstructure, mechanical, electrical, and thermal properties of the obtained graphene/polyethylene...

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Autores principales:	Xiaobing Han, Tao Chen, Yuan Zhao, Jie Gao, Yanan Sang, Houhua Xiong, Zhiyuan Chen
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	graphene polyethylene positron annihilation microstructure property Chemistry QD1-999
Acceso en línea:	https://doaj.org/article/6f2b75635bb742c0a7600479feccf675
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spelling	oai:doaj.org-article:6f2b75635bb742c0a7600479feccf6752021-11-25T18:31:28ZRelationship between the Microstructure and Performance of Graphene/Polyethylene Composites Investigated by Positron Annihilation Lifetime Spectroscopy10.3390/nano111129902079-4991https://doaj.org/article/6f2b75635bb742c0a7600479feccf6752021-11-01T00:00:00Zhttps://www.mdpi.com/2079-4991/11/11/2990https://doaj.org/toc/2079-4991The quantitative characterization of microstructure is most desirable for the establishment of structure-property relationships in polymer nanocomposites. In this work, the effects of graphene on the microstructure, mechanical, electrical, and thermal properties of the obtained graphene/polyethylene (PE) composites were investigated. In order to reveal the structure-performance relationship of graphene/PE composites, especially for the effects of the relative free volume fraction (<i>f<sub>r</sub></i>) and interfacial interaction intensity (<i>β</i>), positron annihilation lifetime spectroscopy (PALS) was employed for its quantitative description. The relative free volume fraction <i>f<sub>r</sub></i> gives a good explanation of the variation for surface resistivity, melting temperature, and thermal stability, and the variation of tensile strength and thermal conductivity agree well with the results of interfacial interaction intensity <i>β</i>. The results showed that <i>f<sub>r</sub></i> and <i>β</i> have a significant effect on the properties of the obtained graphene/PE composites, and the effect on the properties was revealed.Xiaobing HanTao ChenYuan ZhaoJie GaoYanan SangHouhua XiongZhiyuan ChenMDPI AGarticlegraphenepolyethylenepositron annihilationmicrostructurepropertyChemistryQD1-999ENNanomaterials, Vol 11, Iss 2990, p 2990 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	graphene polyethylene positron annihilation microstructure property Chemistry QD1-999
spellingShingle	graphene polyethylene positron annihilation microstructure property Chemistry QD1-999 Xiaobing Han Tao Chen Yuan Zhao Jie Gao Yanan Sang Houhua Xiong Zhiyuan Chen Relationship between the Microstructure and Performance of Graphene/Polyethylene Composites Investigated by Positron Annihilation Lifetime Spectroscopy
description	The quantitative characterization of microstructure is most desirable for the establishment of structure-property relationships in polymer nanocomposites. In this work, the effects of graphene on the microstructure, mechanical, electrical, and thermal properties of the obtained graphene/polyethylene (PE) composites were investigated. In order to reveal the structure-performance relationship of graphene/PE composites, especially for the effects of the relative free volume fraction (<i>f<sub>r</sub></i>) and interfacial interaction intensity (<i>β</i>), positron annihilation lifetime spectroscopy (PALS) was employed for its quantitative description. The relative free volume fraction <i>f<sub>r</sub></i> gives a good explanation of the variation for surface resistivity, melting temperature, and thermal stability, and the variation of tensile strength and thermal conductivity agree well with the results of interfacial interaction intensity <i>β</i>. The results showed that <i>f<sub>r</sub></i> and <i>β</i> have a significant effect on the properties of the obtained graphene/PE composites, and the effect on the properties was revealed.
format	article
author	Xiaobing Han Tao Chen Yuan Zhao Jie Gao Yanan Sang Houhua Xiong Zhiyuan Chen
author_facet	Xiaobing Han Tao Chen Yuan Zhao Jie Gao Yanan Sang Houhua Xiong Zhiyuan Chen
author_sort	Xiaobing Han
title	Relationship between the Microstructure and Performance of Graphene/Polyethylene Composites Investigated by Positron Annihilation Lifetime Spectroscopy
title_short	Relationship between the Microstructure and Performance of Graphene/Polyethylene Composites Investigated by Positron Annihilation Lifetime Spectroscopy
title_full	Relationship between the Microstructure and Performance of Graphene/Polyethylene Composites Investigated by Positron Annihilation Lifetime Spectroscopy
title_fullStr	Relationship between the Microstructure and Performance of Graphene/Polyethylene Composites Investigated by Positron Annihilation Lifetime Spectroscopy
title_full_unstemmed	Relationship between the Microstructure and Performance of Graphene/Polyethylene Composites Investigated by Positron Annihilation Lifetime Spectroscopy
title_sort	relationship between the microstructure and performance of graphene/polyethylene composites investigated by positron annihilation lifetime spectroscopy
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/6f2b75635bb742c0a7600479feccf675
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Relationship between the Microstructure and Performance of Graphene/Polyethylene Composites Investigated by Positron Annihilation Lifetime Spectroscopy

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