The Effects of Metal Cation Types on Zero Shear Viscosities for Ethylene-co-Methacrylic Ionomer Melts
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概要
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The effects of ion aggregates on zero shear viscosities η0 for ethylene-co-methacrylic ionomer melts were investigated. Rapid increasing of η0 for Zn ionomers was shown in high neutralization degree, however, the rapid increase was not observed in all range of neutralization degree for Na ionomers. These results indicate that the formation of ion aggregates strongly affects η0 only for Zn ionomers. We expect that acid cation exchange, in the case of Na ionomers, cancels effect of ion aggregates on η0. On the other hand, formation of ion aggregates affects on damping functions for both cases of Na and Zn ionomers. In the case of Zn ionomers, the value of η0 in high neutralization degree(>40%) deviated from linear regime. This neutralization degree well corresponds to the onset of strong strain dependence of h(γ). We hence consider that measurement of neutralization dependence of η0 is one of the ways to detect existence of ion aggregates in EMAA-Zn ionomer melts.
- 一般社団法人 日本レオロジー学会の論文
- 2005-10-05
著者
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西岡 昭博
山形大
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Imada Shin
Faculty Of Engineering Science Osaka University
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国府田 隆夫
東京大学・工
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国府田 隆夫
日本女子大学理学部数物科学科
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西岡 昭博
山形大学大学院理工学研究科
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Imada Shin
Division Of Materials Physics Graduate School Of Engineering Science Osaka University
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Ikeda Shin-ichi
Nanoelectronics Research Institute Aist
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Ikeda Susumu
Graduate School Of Science And Engineering Yamagata University
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西岡 昭博
Cooperative Research Center Yamagata University
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KODA Tomonori
Faculty of Engineering, Yamagata University
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Nishio Mihoko
Department of Polymer Science and Engineering, Yamagata University
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Koyama Kiyohito
Research Center Toyobo Co. Ltd
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西岡 昭博
山形大学工学部機能高分子工学科
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Koda Tomonori
Department Of Applied Physics Faculty Of Engineering Nagoya University
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Koda Tomonori
Department Of Polymer Science And Engineering Yamagata University
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西岡 昭博
山形大学工学部機能高分子工学科構造制御工学講座
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Ikeda Susumu
Department Of Physics Graduate School Of Science Tohoku Univ.
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Nishioka Akihiro
Cooperative Research Center (crc) Yamagata University
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Nishioka Akihiro
Department Of Materials Science And Engineering Faculty Of Engineering Yamagata University
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Koyama Kiyohito
Department Of Material Science And Engineering Faculty Of Engineering Yamagata University
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Ikeda Susumu
Department Of Applied Chemistry Faculty Of Science And Engineering Saga University
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Nishio Mihoko
Department Of Polymer Science And Engineering Yamagata University
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Koyama Kiyohito
Department of Chemical Engineering, Yamagata Unirersity
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