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Please use this identifier to cite or link to this item: http://hdl.handle.net/10119/14738

Title: Rheological response under non-isothermal stretching for immiscible blends of isotactic polypropylene and acrylate polymer
Authors: Seemork, Jiraporn
Sako, Takumi
Mohd Amran, Bin Md Ali
Yamaguchi, Masayuki
Keywords: non-isothermal stretching
immiscible blends
isotactic polypropylene
acrylate polymer
Issue Date: 2016-12
Publisher: American Institute of Physics
Magazine name: Journal of Rheology
Volume: 61
Number: 1
DOI: 10.1122/1.4965843
Abstract: The addition of acrylate polymers with low molecular weight, such as poly(isobutyl methacrylate) (PIBM) and poly(methyl methacrylate) (PMMA), effectively enhances the force required to stretch a molten polypropylene (PP) at the nonisothermal condition without the enhancement of shear viscosity in the molten state. The mechanism of this phenomenon is found to be attributed to prompt solidification of PIBM and PMMA droplets, which deform greatly to the flow direction in the die land and near the die exit during the extrusion and stretching processes. After the die exit, the deformed droplets show the glassification prior to the crystallization of PP matrix because of the rapid cooling at stretching. Consequently, they behave like rigid fibers in a molten PP, which provide the excess stress by large shear deformation of the matrix between the dispersed glassy fibers during stretching.
Rights: Copyright 2016 The Society of Rheology. This is the author's version of the work and posted here with permission of the Society of Rheology. Jiraporn Seemork, Takumi Sako, Mohd Amran Bin Md Ali, and Masayuki Yamaguchi, Journal of Rheology, 61(1), 2016. doi: http://dx.doi.org/10.1122/1.4965843
URI: http://hdl.handle.net/10119/14738
Material Type: author
Appears in Collections:c10-1. 雑誌掲載論文 (Journal Articles)

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