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Please use this identifier to cite or link to this item: http://hdl.handle.net/10119/14065

Title: Influence of Confined Polymer Structure on Proton Transport Property in Sulfonated Polyimide Thin Films
Authors: Krishnan, Karthik
Yamada, Tomoaki
Iwatsuki, Hiroko
Hara, Mitsuo
Nagao, Shusaku
Otsubo, Kazuya
Sakata, Osami
Fujiwara, Akihiko
Kitagawa, Hiroshi
Nagao, Yuki
Keywords: Conductivity enhancement
Confined polymer thin film
Organized structure
Issue Date: 2014-10-05
Publisher: The Electrochemical Society of Japan
Magazine name: Electrochemistry
Volume: 82
Number: 10
Start page: 865
End page: 869
DOI: 10.5796/electrochemistry.82.865
Abstract: The organized structure and proton transport property in sulfonated polyimide (SPI) thin film have been studied, much less is known at the interfacial charge transport during confinement of such materials. The proton conductivity of SPI thin film is correlated well with the highly oriented polymer structures as determined by infrared (IR) p-polarized multiple-angle incidence resolution spectrometry (p-MAIRS) and in situ RH dependent synchrotron grazing incidence X-ray diffraction (GI-XRD). The high proton conductivity of 2.8 × 10^−1 S cm^−1 at 80 ºC and 90% RH was achieved in the highly oriented SPI thin film. In contrast, the bulk SPI showed the drop of conductivity value at high relative humidity region, which is due to the significant structural disorder accompanied by the strong interaction between the sulfonic acid side chains and water molecules.
Rights: Copyright (C) 2014 The Electrochemical Society of Japan. Karthik KRISHNAN, Tomoaki YAMADA, Hiroko IWATSUKI, Mitsuo HARA, Shusaku NAGANO, Kazuya OTSUBO, Osami SAKATA, Akihiko FUJIWARA, Hiroshi KITAGAWA, Yuki NAGAO, Electrochemistry, 82(10), 2014, 865-869. http://dx.doi.org/10.5796/electrochemistry.82.865
URI: http://hdl.handle.net/10119/14065
Material Type: author
Appears in Collections:c10-1. 雑誌掲載論文 (Journal Articles)

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