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Effect of graphite nanoplatelets on fracture behavior of HDPE/PA66 microfibrillar composites
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SYSNO ASEP 0501000 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Effect of graphite nanoplatelets on fracture behavior of HDPE/PA66 microfibrillar composites Author(s) Kelnar, Ivan (UMCH-V) RID, ORCID
Bal, Ümitcan (UMCH-V)
Hodan, Jiří (UMCH-V)
Kaprálková, Ludmila (UMCH-V)
Krejčíková, Sabina (UMCH-V)
Kotek, Jiří (UMCH-V) RIDSource Title Polymer Engineering and Science. - : Wiley - ISSN 0032-3888
Roč. 59, č. 2 (2019), s. 382-388Number of pages 7 s. Language eng - English Country US - United States Keywords graphite nanoplatelets ; blend ; melt drawing Subject RIV JI - Composite Materials OECD category Composites (including laminates, reinforced plastics, cermets, combined natural and synthetic fibre fabrics R&D Projects GA16-03194S GA ČR - Czech Science Foundation (CSF) Method of publishing Limited access Institutional support UMCH-V - RVO:61389013 UT WOS 000457769100017 EID SCOPUS 85055131427 DOI 10.1002/pen.24934 Annotation Effect of in situ formation of PA66 fibrils and modification with graphite nanoplatelets (GNP) on fracture behavior of the high‐density polyethylene (HDPE)‐matrix microfibrillar composites (MFC) has been evaluated using tensile impact strength (TIS) and J‐integral methods. According to J‐integral, the main mechanism of failure is unstable crack growth. Dissimilar layout of both methods causes different contribution of reinforcement with GNP and PA66 fibrils to fracture process evaluated. More marked orientation and parallel loading lead to increase in impact energy by both GNP and fibrils in TIS. On the other hand, much lower contribution of fibres and even negative effect of GNP pre‐blended in HDPE was found for J‐integral as a consequence of load acting in perpendicular direction. The fact that lower addition of GNP pre‐blended in PA66 does not deteriorate impact behavior indicates that such modification of MFC is an efficient way to get materials with enhanced, well‐balanced parameters. Workplace Institute of Macromolecular Chemistry Contact Eva Čechová, cechova@imc.cas.cz ; Tel.: 296 809 358 Year of Publishing 2020 Electronic address https://onlinelibrary.wiley.com/doi/full/10.1002/pen.24934
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