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Effect of platy and tubular nanoclays on behaviour of biodegradable PCL/PLA blend and related microfibrillar composites
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SYSNO ASEP 0468292 Document Type C - Proceedings Paper (int. conf.) R&D Document Type Conference Paper Title Effect of platy and tubular nanoclays on behaviour of biodegradable PCL/PLA blend and related microfibrillar composites Author(s) Kelnar, Ivan (UMCH-V) RID, ORCID
Kratochvíl, Jaroslav (UMCH-V) RIDArticle number 020013 Source Title AIP Conference Proceedings 1736. - Melville : American Institute of Physics, 2016 / D’Amore A. ; Acierno D. ; Grassia L. - ISSN 0094-243X - ISBN 978-0-7354-1390-0 Pages s. 1-4 Number of pages 4 s. Publication form Print - P Action International Conference on "Times of Polymers (TOP) & Composites" /8./. From Aerospace to Nanotechnology Event date 19.06.2016 - 23.06.2016 VEvent location Ischia Country IT - Italy Event type WRD Language eng - English Country US - United States Keywords poly (epsilon-caprolactone) ; poly (lactic acid) ; microfibrillar composites Subject RIV JI - Composite Materials R&D Projects GA13-15255S GA ČR - Czech Science Foundation (CSF) Institutional support UMCH-V - RVO:61389013 UT WOS 000387931100013 EID SCOPUS 84984559205 DOI 10.1063/1.4949587 Annotation Blending of ductile poly(epsilon-caprolactone) (PCL) and rigid polylactic acid (PLA) is a promising way to tailor biodegradable materials with broad range of properties. But the mutual incompatibility of both polyesters leads to compromised behaviour only. Alternative to PCL/PLA blends is application of PLA in the form of short fibres, however, difficult dispergation of flexible fibres including their poor adhesion and limited processing is a significant restriction. More effective is in situ formation of polymeric fibre-reinforced materials using microfibrillar composites (MFC) concept based on melt- or cold-drawing of a polymer blend. Important advantage of MFC is efficient dispersion and bonding of in-situ formed reinforcing fibres This work deals with combination of structure-directing and reinforcing effects of montmorillonite (oMMT) and halloysite nanotubes (HNT) in the PCL/PLA 80/20 blend with in-situ formation of PLA fibrils in the PCL matrix. In the resulting microfibrillar composite, reinforcement by rigid PLA fibrils is combined with strengthening of both components by the nanofiller (NF). Moreover, PLA fibrils formation via melt-drawing is only possible after nanofiller addition due to favourable affecting of rheological parameters of the polymer components. The structure-properties relationship and complex effect of NF on microfibrillar composite performance, causing e.g., quite comparable parameters of both microfibrillar composites in spite of lower reinforcing effect of halloysite nanotubes on components, are discussed. Workplace Institute of Macromolecular Chemistry Contact Eva Čechová, cechova@imc.cas.cz ; Tel.: 296 809 358 Year of Publishing 2017
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