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Please use this identifier to cite or link to this item: http://hdl.handle.net/10119/15745

Title: Improvement of rigidity for rubber-toughened polypropylene via localization of carbon nanotubes
Authors: Wiwattananukul, Rujirek
Fan, Bowen
Yamaguchi, Masayuki
Keywords: Carbon nanotubes
Polymer-matrix composites
Mechanical properties
Mixing
Issue Date: 2017-01-18
Publisher: Elsevier
Magazine name: Composites Science and Technology
Volume: 141
Start page: 106
End page: 112
DOI: 10.1016/j.compscitech.2017.01.012
Abstract: A methodology for controlling the localization of multi-walled carbon nanotubes (MWCNTs) was studied using an immiscible polymer blend composed of isotactic polypropylene (PP) and ethylene-co-propylene rubber (EPR). We found that the MWCNTs were localized in EPR domains within the composite, which was prepared at 280 °C. EPR molecules bonded to the MWCNT surface are responsible for the localization in EPR. Conversely, MWCNTs preferentially resided in the matrix when the composite was prepared at 190 °C along with nitrogen gas purging. Because of the selective localization of the MWCNTs in the matrix, the composite obtained via mixing at the lower temperature exhibited a higher Young's modulus and yield strength. These findings demonstrate that mixing conditions greatly affect the MWCNT distribution and thus the mechanical properties of PP/EPR blends.
Rights: Copyright (C)2017, Elsevier. Licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International license (CC BY-NC-ND 4.0). [http://creativecommons.org/licenses/by-nc-nd/4.0/] NOTICE: This is the author's version of a work accepted for publication by Elsevier. Rujirek Wiwattananukul, Bowen Fan, Masayuki Yamaguchi, Composites Science and Technology, 141, 2017, 106-112, http://dx.doi.org/10.1016/j.compscitech.2017.01.012
URI: http://hdl.handle.net/10119/15745
Material Type: author
Appears in Collections:c10-1. 雑誌掲載論文 (Journal Articles)

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