Interfacial Modulation of Graphene by Polythiophene with Controlled Molecular Weight to Enhance Thermal Conductivity

With a trend of continuing improvement in the development of electronic devices, a problem of serious heat accumulation has emerged which has created the need for more efficient thermal management. Graphene sheets (GNS) have drawn much attention with regard to heat transfer because of their excellen...

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Autores principales:	Ya Li, Yu Wang, Peng Chen, Ru Xia, Bin Wu, Jiasheng Qian
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	poly(3-hexylthiophene) molecular weight membrane thermal conductivity Chemical technology TP1-1185 Chemical engineering TP155-156
Acceso en línea:	https://doaj.org/article/9da2369d81554ccaa2e199e35b566139
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spelling	oai:doaj.org-article:9da2369d81554ccaa2e199e35b5661392021-11-25T18:20:11ZInterfacial Modulation of Graphene by Polythiophene with Controlled Molecular Weight to Enhance Thermal Conductivity10.3390/membranes111108952077-0375https://doaj.org/article/9da2369d81554ccaa2e199e35b5661392021-11-01T00:00:00Zhttps://www.mdpi.com/2077-0375/11/11/895https://doaj.org/toc/2077-0375With a trend of continuing improvement in the development of electronic devices, a problem of serious heat accumulation has emerged which has created the need for more efficient thermal management. Graphene sheets (GNS) have drawn much attention with regard to heat transfer because of their excellent in-plane thermal conductivity; however, the ultrahigh interfacial thermal resistance between graphene lamellae has seriously restricted its practical applications. Herein, we describe heat transfer membranes composed of graphene which have been modified by intrinsic thermally conductive polymers with different molecular weights. The presence of macromolecular surface modifiers not only constructed the graphene heat transfer interface by π–π interactions, but also significantly enhanced the membranes’ in-plane thermal conductivity by utilizing their intrinsic heat transfer properties. Such results indicated that the in-plane thermal conductivity of the fabricated membrane exhibits a high in-plane thermal conductivity of 4.17 W m<sup>−1</sup> K<sup>−1</sup>, which, containing the GNS modified with 6000 g/mol (M<sub>n</sub>) of poly(3-hexylthiophene) (P3HT), was 26 times higher that of poly (vinylidene fluoride) (PVDF). The P3HT molecular chain with specific molecular weight can form more matching structure π–π interactions, which promotes thermal conductivity. The investigation of different molecular weights has provided a new pathway for designing effective interfacial structures to relieve interface thermal resistance in thermally conductive membranes.Ya LiYu WangPeng ChenRu XiaBin WuJiasheng QianMDPI AGarticlepoly(3-hexylthiophene)molecular weightmembranethermal conductivityChemical technologyTP1-1185Chemical engineeringTP155-156ENMembranes, Vol 11, Iss 895, p 895 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	poly(3-hexylthiophene) molecular weight membrane thermal conductivity Chemical technology TP1-1185 Chemical engineering TP155-156
spellingShingle	poly(3-hexylthiophene) molecular weight membrane thermal conductivity Chemical technology TP1-1185 Chemical engineering TP155-156 Ya Li Yu Wang Peng Chen Ru Xia Bin Wu Jiasheng Qian Interfacial Modulation of Graphene by Polythiophene with Controlled Molecular Weight to Enhance Thermal Conductivity
description	With a trend of continuing improvement in the development of electronic devices, a problem of serious heat accumulation has emerged which has created the need for more efficient thermal management. Graphene sheets (GNS) have drawn much attention with regard to heat transfer because of their excellent in-plane thermal conductivity; however, the ultrahigh interfacial thermal resistance between graphene lamellae has seriously restricted its practical applications. Herein, we describe heat transfer membranes composed of graphene which have been modified by intrinsic thermally conductive polymers with different molecular weights. The presence of macromolecular surface modifiers not only constructed the graphene heat transfer interface by π–π interactions, but also significantly enhanced the membranes’ in-plane thermal conductivity by utilizing their intrinsic heat transfer properties. Such results indicated that the in-plane thermal conductivity of the fabricated membrane exhibits a high in-plane thermal conductivity of 4.17 W m<sup>−1</sup> K<sup>−1</sup>, which, containing the GNS modified with 6000 g/mol (M<sub>n</sub>) of poly(3-hexylthiophene) (P3HT), was 26 times higher that of poly (vinylidene fluoride) (PVDF). The P3HT molecular chain with specific molecular weight can form more matching structure π–π interactions, which promotes thermal conductivity. The investigation of different molecular weights has provided a new pathway for designing effective interfacial structures to relieve interface thermal resistance in thermally conductive membranes.
format	article
author	Ya Li Yu Wang Peng Chen Ru Xia Bin Wu Jiasheng Qian
author_facet	Ya Li Yu Wang Peng Chen Ru Xia Bin Wu Jiasheng Qian
author_sort	Ya Li
title	Interfacial Modulation of Graphene by Polythiophene with Controlled Molecular Weight to Enhance Thermal Conductivity
title_short	Interfacial Modulation of Graphene by Polythiophene with Controlled Molecular Weight to Enhance Thermal Conductivity
title_full	Interfacial Modulation of Graphene by Polythiophene with Controlled Molecular Weight to Enhance Thermal Conductivity
title_fullStr	Interfacial Modulation of Graphene by Polythiophene with Controlled Molecular Weight to Enhance Thermal Conductivity
title_full_unstemmed	Interfacial Modulation of Graphene by Polythiophene with Controlled Molecular Weight to Enhance Thermal Conductivity
title_sort	interfacial modulation of graphene by polythiophene with controlled molecular weight to enhance thermal conductivity
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/9da2369d81554ccaa2e199e35b566139
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Interfacial Modulation of Graphene by Polythiophene with Controlled Molecular Weight to Enhance Thermal Conductivity

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