Rheological behavior of nanofillers enclosed multilayer systems under elongational flows: From microlayers to nanolayers

Rheological behavior of nanofillers enclosed multilayer systems under elongational flows: From microlayers to nanolayers

LI Jixiang, MAAZOUZ Abderrahim, LAMNAWAR Khalid

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Abstract. The present work dedicated in the elongational behavior of multilayer polymer nanocomposites. CNTs were enclosed in a polypropylene with linear chain structure (PPC) and then co-extruded with another polypropylene (PPH) with long chain branching (LCB). By forced assembly, multilayer films with layer thickness from micro to nano were fabricated and the elongational rheology test was then conducted with the extension vertical to the film extrusion direction. Due to the LCB inside PPH, all multilayer films showed obvious strain hardening behavior despite linear PPC is a strain softening polymer. When the layer numbers were fewer, namely, the layer thickness was higher than the length of the CNTs, the strain hardening behavior of nanocomposite films was close to the multilayer system with neat polymers. With the layer numbers increasing, the layer thickness became lower than the length of the CNTs and the strain hardening behavior of nanocomposite films increased dramatically compared to the multilayer system with neat polymers. The reason for this kind behavior was because of the better orientation of CNTs via layer confinement when layer numbers increased, which thus making the strain hardening more significant.

Polymer Nanocomposites, Multilayer, Forced Assembly, Elongational Flow

Published online 4/24/2024, 10 pages
Copyright © 2024 by the author(s)
Published under license by Materials Research Forum LLC., Millersville PA, USA

Citation: LI Jixiang, MAAZOUZ Abderrahim, LAMNAWAR Khalid, Rheological behavior of nanofillers enclosed multilayer systems under elongational flows: From microlayers to nanolayers, Materials Research Proceedings, Vol. 41, pp 2658-2667, 2024

DOI: https://doi.org/10.21741/9781644903131-291

The article was published as article 291 of the book Material Forming

Content from this work may be used under the terms of the Creative Commons Attribution 3.0 license. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI.

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