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  1. 080 繊維学部
  2. 0801 学術論文

Hydrothermal Gelation of Pure Cellulose Nanofiber Dispersions

http://hdl.handle.net/10091/0002000734
http://hdl.handle.net/10091/0002000734
f68ab89f-b3f2-4771-a70c-8d4d87671f21
名前 / ファイル ライセンス アクション
17H04893_2.pdf 17H04893_2.pdf
Item type 学術雑誌論文 / Journal Article(1)
公開日 2022-03-10
タイトル
言語 en
タイトル Hydrothermal Gelation of Pure Cellulose Nanofiber Dispersions
言語
言語 eng
キーワード
言語 en
主題Scheme Other
主題 cellulose nanofiber
キーワード
言語 en
主題Scheme Other
主題 wet pulverization
キーワード
言語 en
主題Scheme Other
主題 hydrothermal treatment
キーワード
言語 en
主題Scheme Other
主題 gelation mechanism
キーワード
言語 en
主題Scheme Other
主題 mechanical strength
キーワード
言語 en
主題Scheme Other
主題 chemical-free synthesis method
資源タイプ
資源 http://purl.org/coar/resource_type/c_6501
タイプ journal article
著者 Suenaga, Shin

× Suenaga, Shin

en Suenaga, Shin

Search repository
Osada, Mitsumasa

× Osada, Mitsumasa

en Osada, Mitsumasa

Search repository
信州大学研究者総覧へのリンク
氏名 長田, 光正
URL https://soar-rd.shinshu-u.ac.jp/profile/ja.WmLUZFTp.html
出版者
出版者 ACS
引用
内容記述タイプ Other
内容記述 ACS Applied Polymer Materials. 1: 1045-1053. (2019)
書誌情報 ACS Applied Polymer Materials

巻 1, 号 5, p. 1045-1053, 発行日 2019-03-27
抄録
内容記述タイプ Abstract
内容記述 The gelation of cellulose nanofibers (CNFs) through conventional cross-linking or reprecipitation requires the use of additives. Here, for the first time the gelation of pure CNF dispersions has been achieved solely by mechanical disintegration and a hydrothermal process without chemical modification. Different concentrations of cellulose powder were dispersed in water, following which these CNF dispersions were subjected to hydrothermal treatment at 160 degrees C for different lengths of time in a sealed reactor. Self-sustaining hydrogels with no discoloration were obtained. The chemical properties and crystal structures of the CNFs were essentially unchanged following hydrothermal treatment. Although the molecular mass of the cellulose was slightly reduced, the polymer density of cellulose at the same hydrodynamic radius was unchanged by hydrothermal treatment. Hence, chemically cross-linked structures did not form during the hydrothermal process. Instead, physical network structures developed within the CNF hydrogels, which increased the mechanical strength. Moreover, this network structure and therefore the strength of the hydrogel could be improved by increasing the mechanical disintegration time or the cellulose concentration of the CNF dispersion. To ensure sufficient hydrothermal gelation, it was important that the CNF dispersion had a storage modulus greater than 20 Pa.
言語 en
資源タイプ(コンテンツの種類)
内容記述タイプ Other
内容記述 Article
ISSN
収録物識別子タイプ EISSN
収録物識別子 2637-6105
DOI
関連タイプ isVersionOf
識別子タイプ DOI
関連識別子 https://doi.org/10.1021/acsapm.9b00076
関連名称 10.1021/acsapm.9b00076
出版タイプ
出版タイプ AM
出版タイプResource http://purl.org/coar/version/c_ab4af688f83e57aa
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