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Please use this identifier to cite or link to this item: http://hdl.handle.net/10119/18023

Title: Structure and properties of fiber-reinforced polypropylene prepared by direct incorporation of aqueous solution of poly(vinyl alcohol)
Authors: Nishikawa, Riho
Aridome, Norifumi
Ojima, Naoki
Yamaguchi, Masayuki
Keywords: Poly(vinyl alcohol)
Fiber-reinforced polymer
Mechanical property
Issue Date: 2020-05-14
Publisher: Elsevier
Magazine name: Polymer
Volume: 199
Start page: 122566
DOI: 10.1016/j.polymer.2020.122566
Abstract: Poly(vinyl alcohol) (PVA) is immiscible with most conventional plastics and also unsuitable for melt processing owing to its extensive hydrogen bonding. Therefore, there have been few studies concerning the melt-mixing of PVA with standard plastics. The present paper describes a novel technique for producing isotactic polypropylene (PP) composites containing PVA fibers by directly introducing an aqueous solution of PVA into molten PP from an injection nozzle in a twin-screw extruder having a wide venting port. The PVA fibers were found to be dispersed homogeneously in the composites obtained by this method. Furthermore, an injection-molded product made from this composite exhibited an increased modulus, high yield strength, and high heat distortion temperature. These properties are attributed to the significant degree of orientation of both the PP chains and the PVA fibers. The nucleating action of the PVA fibers oriented in the flow direction is responsible for the structure of the composite, which in turn results in attractive properties.
Rights: Copyright (C)2020, 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. Riho Nishikawa, Norifumi Aridome, Naoki Ojima, Masayuki Yamaguchi, Polymer, 199, 2020, 122566, https://doi.org/10.1016/j.polymer.2020.122566
URI: http://hdl.handle.net/10119/18023
Material Type: author
Appears in Collections:c10-1. 雑誌掲載論文 (Journal Articles)

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