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Different aspects of polymer films based on low-density polyethylene using graphene as filler
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SYSNO ASEP 0575520 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Different aspects of polymer films based on low-density polyethylene using graphene as filler Author(s) Santos Medeiros, Gabriela (UMCH-V)
Nisar, M. (CL)
Peter, Jakub (UMCH-V) RID, ORCID
Andrade, R. J. E. (BR)
Fechine, G. J. M. (BR)Article number e54502 Source Title Journal of Applied Polymer Science. - : Wiley - ISSN 0021-8995
Roč. 140, č. 40 (2023)Number of pages 12 s. Language eng - English Country US - United States Keywords barrier properties ; food packaging ; graphene Subject RIV CD - Macromolecular Chemistry OECD category Polymer science R&D Projects TK02030155 GA TA ČR - Technology Agency of the Czech Republic (TA ČR) Method of publishing Limited access Institutional support UMCH-V - RVO:61389013 UT WOS 001042550600001 EID SCOPUS 85166773991 DOI https://doi.org/10.1002/app.54502 Annotation The focus of the present work is to prepare low-density polyethylene (LDPE)-graphene (G) nanocomposite films with improved gas barrier properties by melt extrusion. A narrow range of the graphene (0.05–0.3 wt.%) as filler was used in the LDPE matrix. The rheological analysis indicating that there is no significant influence on the LDPE chains mobility with the addition of filler. The nanocomposites percent crystallinity (Xc%) increase from 25.0% to 31.6% compared to neat LDPE. The X-ray diffractogram shows a change in width half height of the peak positioned at 26° ((002) plane) from 0.69 (graphite) to 1.24 (graphene), revealing the asymmetry of this plane. The optical microscopy images show a good dispersion of the nanoparticles in the polymer matrix. The mechanical properties of the nanocomposites in longitudinal direction demonstrate better improvement with addition of the filler as compared to the transverse direction. The contact angle measurements of nanocomposites for water and ethylene glycol do not shows a significant variation in comparison to neat LDPE. The nanocomposites show 26% enhancement in the oxygen barrier property. Thus, here we present the cost-effective LDPE-graphene nanocomposites with improve oxygen barrier property, which can be used in different industrial application especially in food packaging.
Workplace Institute of Macromolecular Chemistry Contact Eva Čechová, cechova@imc.cas.cz ; Tel.: 296 809 358 Year of Publishing 2024 Electronic address https://onlinelibrary.wiley.com/doi/10.1002/app.54502
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