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Please use this identifier to cite or link to this item: http://hdl.handle.net/10119/16754

Title: 長鎖分岐ポリプロピレンを分散相とするポリオレフィンブレンドのレオロジー特性
Authors: 山口, 政之
藤井, 陽子
プルカード, パニター
Keywords: Polyolefin blend
Elongational viscosity
Long-chain branch
Issue Date: 2020-04-15
Publisher: 日本レオロジー学会
Magazine name: 日本レオロジー学会誌 (Journal of the Society of Rheology, Japan)
Volume: 48
Number: 2
Start page: 109
End page: 112
DOI: 10.1678/rheology.48.109
Abstract: Rheological properties for binary polyolefin blends composed of linear low-density polyethylene (LLDPE) and long-chain branched polypropylene (LCB-PP), in which LCB-PP is the dispersed phase, were studied. Even though LCB-PP was in the dispersed phase, the blend showed marked strain-hardening behavior in the transient elongational viscosity. The deformed LCB-PP droplets acted as “rigid fibers” during the elongational flow owing to its strain-hardening behavior. Consequently, the blend behaved like a fiber-dispersion system and thus exhibited the enhanced elongational viscosity, originated from excess deformation of LLDPE located between fibrous LCB-PP droplets under the elongational flow. Under shear flow, the primary normal stress difference was not enhanced by the addition of LCB-PP. This is reasonable because LCB-PP droplets oriented to the flow direction did not provide excess deformation of a continuous phase greatly.
Rights: 本著作物は日本レオロジー学会の許可のもとに掲載するものです。This material is posted here with permission of the Society of Rheology, Japan. Copyright (C) 2020 日本レオロジー学会. Riho Nishikawa, Howon Yoon, Masayuki Yamaguchi, 山口 政之, 藤井 陽子, プルカード パニター, 日本レオロジー学会誌 (Journal of the Society of Rheology, Japan), 48(2), 2020, pp.109-112. https://doi.org/10.1678/rheology.48.109
URI: http://hdl.handle.net/10119/16754
Material Type: publisher
Appears in Collections:c10-1. 雑誌掲載論文 (Journal Articles)

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