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Improvement of barrier properties of recycled thermoplastic polymers by O2 and NH2 functionalized graphene nanofillers

Dalal A. Alshammari, Feras Korkees Orcid Logo, Zeinhom M. El-Bahy, Yasmin Vieira, Guilherme Luiz Dotto Orcid Logo

Chemical Engineering Communications, Volume: 213, Issue: 2, Pages: 365 - 388

Swansea University Author: Feras Korkees Orcid Logo

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DOI (Published version): 10.1080/00986445.2025.2549914

Abstract

Graphene/polymer composites have a wide range of applications, such as energy storage, 3D printing, sensors, water purification, and heat dissipation materials due to their enhanced mechanical, electrical, and thermal properties. One major challenge is graphene’s tendency to aggregate due to strong...

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Published in: Chemical Engineering Communications
ISSN: 0098-6445 1563-5201
Published: Informa UK Limited 2026
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URI: https://cronfa.swan.ac.uk/Record/cronfa70607
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last_indexed 2025-12-13T05:29:59Z
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spelling 2025-12-12T13:24:54.4706901 v2 70607 2025-10-08 Improvement of barrier properties of recycled thermoplastic polymers by O2 and NH2 functionalized graphene nanofillers 4d34f40e38537261da3ad49a0dd2be09 0000-0002-5131-6027 Feras Korkees Feras Korkees true false 2025-10-08 EAAS Graphene/polymer composites have a wide range of applications, such as energy storage, 3D printing, sensors, water purification, and heat dissipation materials due to their enhanced mechanical, electrical, and thermal properties. One major challenge is graphene’s tendency to aggregate due to strong Van der Waals interactions (5.9 kJ mol−1), which hinders uniform dispersion in the polymer matrix. Therefore, this study focused on improving the barrier properties of recycled polymer matrices, such as Nylon 6, Nylon 66, and polyethylene terephthalate, against moisture using chemically modified graphene nanofillers (GNPs). The nanocomposite films were prepared based on the variation of GNPs’ loadings and thicknesses. The results obtained from scanning electron microscope revealed that the addition of GNPs resulted in the formation of irregular protuberances on the fracture surface of the polymer matrices, with graphene fillers dispersed within the matrices. The water vapor transmission rate (WVTR) for samples with 0.5 mm was reduced by the addition of GNPs. The moisture barrier properties of recycled polymer matrices are improved by adding O2- and NH2- to GNPs, with interfacial interactions between the fillers and the matrices dependent on the functionalization type. Journal Article Chemical Engineering Communications 213 2 365 388 Informa UK Limited 0098-6445 1563-5201 Absorption, barrier properties, graphene, nanocomposite, recycled polymers 1 2 2026 2026-02-01 10.1080/00986445.2025.2549914 COLLEGE NANME Engineering and Applied Sciences School COLLEGE CODE EAAS Swansea University Not Required No funding was received. 2025-12-12T13:24:54.4706901 2025-10-08T10:50:35.4667736 Faculty of Science and Engineering School of Engineering and Applied Sciences - Materials Science and Engineering Dalal A. Alshammari 1 Feras Korkees 0000-0002-5131-6027 2 Zeinhom M. El-Bahy 3 Yasmin Vieira 4 Guilherme Luiz Dotto 0000-0002-4413-8138 5 70607__35592__d43a8b19af0647bab93918f02a67ca99.pdf 70607.AAM.pdf 2025-11-10T15:55:08.4815057 Output 2180643 application/pdf Accepted Manuscript true Author accepted manuscript document released under the terms of a Creative Commons CC-BY licence using the Swansea University Research Publications Policy (rights retention). true eng https://creativecommons.org/licenses/by/4.0/ 334 Dalal Alshammari daalshammari@uhb.edu.sa false
title Improvement of barrier properties of recycled thermoplastic polymers by O2 and NH2 functionalized graphene nanofillers
spellingShingle Improvement of barrier properties of recycled thermoplastic polymers by O2 and NH2 functionalized graphene nanofillers
Feras Korkees
title_short Improvement of barrier properties of recycled thermoplastic polymers by O2 and NH2 functionalized graphene nanofillers
title_full Improvement of barrier properties of recycled thermoplastic polymers by O2 and NH2 functionalized graphene nanofillers
title_fullStr Improvement of barrier properties of recycled thermoplastic polymers by O2 and NH2 functionalized graphene nanofillers
title_full_unstemmed Improvement of barrier properties of recycled thermoplastic polymers by O2 and NH2 functionalized graphene nanofillers
title_sort Improvement of barrier properties of recycled thermoplastic polymers by O2 and NH2 functionalized graphene nanofillers
author_id_str_mv 4d34f40e38537261da3ad49a0dd2be09
author_id_fullname_str_mv 4d34f40e38537261da3ad49a0dd2be09_***_Feras Korkees
author Feras Korkees
author2 Dalal A. Alshammari
Feras Korkees
Zeinhom M. El-Bahy
Yasmin Vieira
Guilherme Luiz Dotto
format Journal article
container_title Chemical Engineering Communications
container_volume 213
container_issue 2
container_start_page 365
publishDate 2026
institution Swansea University
issn 0098-6445
1563-5201
doi_str_mv 10.1080/00986445.2025.2549914
publisher Informa UK Limited
college_str Faculty of Science and Engineering
hierarchytype
hierarchy_top_id facultyofscienceandengineering
hierarchy_top_title Faculty of Science and Engineering
hierarchy_parent_id facultyofscienceandengineering
hierarchy_parent_title Faculty of Science and Engineering
department_str School of Engineering and Applied Sciences - Materials Science and Engineering{{{_:::_}}}Faculty of Science and Engineering{{{_:::_}}}School of Engineering and Applied Sciences - Materials Science and Engineering
document_store_str 1
active_str 0
description Graphene/polymer composites have a wide range of applications, such as energy storage, 3D printing, sensors, water purification, and heat dissipation materials due to their enhanced mechanical, electrical, and thermal properties. One major challenge is graphene’s tendency to aggregate due to strong Van der Waals interactions (5.9 kJ mol−1), which hinders uniform dispersion in the polymer matrix. Therefore, this study focused on improving the barrier properties of recycled polymer matrices, such as Nylon 6, Nylon 66, and polyethylene terephthalate, against moisture using chemically modified graphene nanofillers (GNPs). The nanocomposite films were prepared based on the variation of GNPs’ loadings and thicknesses. The results obtained from scanning electron microscope revealed that the addition of GNPs resulted in the formation of irregular protuberances on the fracture surface of the polymer matrices, with graphene fillers dispersed within the matrices. The water vapor transmission rate (WVTR) for samples with 0.5 mm was reduced by the addition of GNPs. The moisture barrier properties of recycled polymer matrices are improved by adding O2- and NH2- to GNPs, with interfacial interactions between the fillers and the matrices dependent on the functionalization type.
published_date 2026-02-01T05:27:43Z
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score 11.090091

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