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Please use this identifier to cite or link to this item: http://hdl.handle.net/10119/9168

Title: Morphological Stability of the Initially Formed Polymer Particles in Stopped-Flow Propylene Polymerization
Authors: Thang, Vu Quoc
Taniike, Toshiaki
Umemori, Masaki
Ikeya, Mitsuhiro
Hiraoka, Yuichi
Terano, Minoru
Keywords: Morphological stability
Ziegler-Natta catalyst
Stopped-flow polymerization
Issue Date: 2010-02
Publisher: マテリアルライフ学会
Magazine name: Journal of Materials Life Society
Volume: 22
Number: 1
Start page: 30
End page: 34
Abstract: The morphological stability of initially formed polymer particles against air was improved in order to study the initial morphology development with Zigler-Natta catalyst olefin polymerization. The stopped-flow polymerization technique was applied to synthesize initial polymer particles in combination with various quenching and stabilizing procedures. When polymerizing particles were quenched with cold heptane maintained at -65°C under N_2 or CO_2, the exposure of the formed particles to air caused the fast formation of cracks on the surface, leading to serious reformation of the particle shape. However, when the particles were quenched with cold heptane under CO_2 and washed with heptane containing an appropriate amount oftetrahydrofuran, the particle morphology was significantly stabilized which hardly changed even after 1 h exposure to air. The established stabilizing procedure is highly useful for various characterizations of the initially formed particles.
Rights: Copyright (C) 2010 マテリアルライフ学会. Vu Quoc Thang, Toshiaki Taniike, Masaki Umemori, Mitsuhiro Ikeya, Yuichi Hiraoka, Minoru Terano, Journal of Materials Life Society, 22(1), 2010, 30-34.
URI: http://hdl.handle.net/10119/9168
Material Type: publisher
Appears in Collections:c10-1. 雑誌掲載論文 (Journal Articles)

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