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  1. 生命環境系 (Faculty of Life and Environmental Sciences)
  2. 小林 幹佳 (Kobayashi Motoyoshi)
  1. 生命環境系 (Faculty of Life and Environmental Sciences)
  2. 江前 敏晴 (Enomae Toshiharu)
  1. コンテンツタイプ (Contents Type)
  2. 雑誌発表論文等 (Journal article, etc.)
  3. R~
  4. RSC Advances

An analysis on the electrophoretic mobility of cellulose nanocrystals as thin cylinders: relaxation and end effect

http://hdl.handle.net/2241/00161327
7ee54f1a-2dd4-4e67-ae59-fd7b690ecb19
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RSC-Ad_9-58.pdf RSC-Ad_9-58 (699.4 kB)
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item type Journal Article(1)
公開日 2020-09-14
タイトル
言語 en
タイトル An analysis on the electrophoretic mobility of cellulose nanocrystals as thin cylinders: relaxation and end effect
言語
言語 eng
資源タイプ
タイプ journal article
著者 小林, 幹佳

× 小林, 幹佳

WEKO 106753
e-Rad 20400179
筑波大学研究者総覧 0000003047

小林, 幹佳

ja-Kana コバヤシ, モトヨシ

en KOBAYASHI, Motoyoshi

Search repository
江前, 敏晴

× 江前, 敏晴

WEKO 120184
e-Rad 40203640
筑波大学研究者総覧 0000003227

江前, 敏晴

ja-Kana エノマエ, トシハル

en ENOMAE, Toshiharu

Search repository
Lin, Kuan-Hsuan

× Lin, Kuan-Hsuan

WEKO 222296

en Lin, Kuan-Hsuan

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Hu, Donghao

× Hu, Donghao

WEKO 222297

en Hu, Donghao

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Sugimoto, Takuya

× Sugimoto, Takuya

WEKO 222298

en Sugimoto, Takuya

Search repository
Chang, Feng-Cheng

× Chang, Feng-Cheng

WEKO 222299

en Chang, Feng-Cheng

Search repository
抄録
内容記述 Cellulose nanocrystals (CNCs) are extracted from cellulosic fibers via sulfuric acid hydrolysis and found to exhibit unique properties due to their nanoscale, ordered structure, and surface morphology. The dispersion stability of a CNC suspension is a significant factor when CNCs are applied for reinforcement of a composite or ink jet printing. Since sulfuric acid hydrolysis introduces sulfate groups on CNC surfaces, we considered that charging conditions needed to be characterized, typically based on electrophoretic mobility. After the electrophoretic mobility was measured, several theoretical equations were applied to fit those values to assume the proper CNC particle shape. While Smoluchowski's equation is often used for this purpose, its applicability to CNCs should be reconsidered due to the thin, rod-like shape of CNCs with a finite length and high charge density. In this sense, we measured the surface charge and electrophoretic mobility of well-characterized CNCs. The obtained experimental data have been analyzed by using various electrokinetic equations. Our analytical results suggested that Smoluchowski's equation and the Ohshima–Henry equation overestimated the magnitude of the mobility of CNCs because it ignores the double layer relaxation and end effect. They also suggested that neither the Ohshima–Overbeek averaged equation nor the Ohshima–Overbeek perpendicular equation described the mobility of CNCs appropriately because those equations consider the double layer relaxation and end effect of a cylinder in a limited manner. Instead, the modified Ohshima–Overbeek equation was presented to be preferred for such a charged cylinder with a small aspect ratio.
書誌情報 en : RSC Advances

巻 9, 号 58, p. 34032-34038, 発行日 2019-10
ISSN
収録物識別子 2046-2069
DOI
関連識別子
関連識別子 10.1039/C9RA05156B
権利
権利情報 Open Access Article. Published on 22 October 2019. This article is licensed under a Creative Commons Attribution 3.0 Unported Licence.
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出版者
出版者 The Royal Society of Chemistry
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