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Please use this identifier to cite or link to this item: http://hdl.handle.net/10119/10728

Title: Segregation Behavior of Polyethylene with Broad Molecular Weight Distribution by Annealing Procedure in Temperature Gradient
Authors: Siriprumpoonthum, Monchai
Mieda, Naoya
Nobukawa, Shogo
Yamaguchi, Masayuki
Keywords: Fractionation
Rheology
Polyethylene
Blend
Issue Date: 2011-07-22
Publisher: Springer
Magazine name: Journal of Polymer Research
Volume: 18
Number: 6
Start page: 2449
End page: 2453
DOI: 10.1007/s10965-011-9661-z
Abstract: An annealing treatment in a moltenh state, in which temperature of the top plate is different from that of the bottom one in a compression-molding, leads to molecular weight segregation of high-density polyethylene (HDPE) prepared by mixture of two types of HDPE with different molecular weights (Mw = 1.8 x 10^5 and 2.9 x 10^4). Low molecular weight fraction tends to localize at the surface attached to the higher temperature and vice versa. The segregation behavior is obvious at a large temperature gradient. Although the accuracy and mechanism of the phenomenon have not been clarified yet, this could be applied as a new fractionation method, which does not use a solvent.
Rights: This is the author-created version of Springer, Monchai Siriprumpoonthum, Naoya Mieda, Shogo Nobukawa and Masayuki Yamaguchi, Journal of Polymer Research, 18(6), 2011, 2449-2453. The original publication is available at www.springerlink.com, http://dx.doi.org/10.1007/s10965-011-9661-z
URI: http://hdl.handle.net/10119/10728
Material Type: author
Appears in Collections:c10-1. 雑誌掲載論文 (Journal Articles)

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