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Parameters of hydrothermal gelation of chitin nanofibers determined using a severity factor
https://shinshu.repo.nii.ac.jp/records/43877
https://shinshu.repo.nii.ac.jp/records/43877b26acff8-a2be-400a-8a8b-a47a567433f6
名前 / ファイル | ライセンス | アクション |
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https://soar-ir.repo.nii.ac.jp/?action=repository_action_common_download&item_id=20276&item_no=1&attribute_id=65&file_no=1
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Item type | Journal Article(1) | |||||
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公開日 | 2020-09-04 | |||||
タイトル | ||||||
タイトル | Parameters of hydrothermal gelation of chitin nanofibers determined using a severity factor | |||||
作成者(その他言語) |
Suenaga, Shin
× Suenaga, Shin× Osada, Mitsumasa |
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公開者(その他言語) | ||||||
姓名 | SPRINGER | |||||
書誌情報 |
CELLULOSE 巻 25, 号 12, p. 6873-6885, 発行日 2018-12 |
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言語 | ||||||
言語 | eng | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | α-Chitin nanofiber | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | β-Chitin nanofiber | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | Hydrothermal gelation | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | Severity factor | |||||
資源タイプ | ||||||
資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||
資源タイプ | journal article | |||||
アクセス権 | ||||||
アクセス権 | metadata only access | |||||
アクセス権URI | http://purl.org/coar/access_right/c_14cb | |||||
内容記述 | ||||||
内容記述タイプ | Other | |||||
内容記述 | First Online: 28 September 2018 | |||||
内容記述 | ||||||
内容記述タイプ | Other | |||||
内容記述 | The hydrothermal gelation of α- and β-chitin nanofibers (α- and β-ChNFs) prepared at neutral and acidic pH was conducted by heating them to 120, 160, 180, and 200 °C in a sealed reactor. The optical transmittance and mechanical strength of β-ChNFs gelated at the acidic pH were determined for the first time using a severity factor defined as a function of the integrated heating time and temperature. The width of β-ChNFs increased after the hydrothermal treatment, indicating that these fibers strongly adhered to each other to form a network structure during gelation. Furthermore, the hydrothermal gelation of α- and β-ChNFs with different degrees of disintegration prepared at the neutral and acidic pH was conducted. It was found that the hydrothermal treatment of α-chitin must be performed at the acidic pH to obtain a self-sustaining hydrogel of well-disintegrated NFs. The disintegration of β-chitin into NFs occurred more easily at the acidic pH than under the neutral conditions; however, in the latter case, the same disintegration degree of β-ChNFs could be achieved by increasing the number of disintegration steps. At the same disintegration degree, the strength of the self-sustaining hydrogel obtained at the neutral conditions was greater than that of the gel prepared at the acidic pH, indicating that the electrostatic repulsion caused by acid addition negatively affected the formation of the hydrogel network structure. To maximize the efficiency of the hydrothermal gelation process, ChNFs should be as thin as possible and electrostatic repulsion forces must be controlled. | |||||
日付 | ||||||
日付 | 2018-11-14 | |||||
日付タイプ | Created | |||||
資源タイプ | ||||||
内容記述タイプ | Other | |||||
内容記述 | Article | |||||
その他の資源識別子 | ||||||
内容記述タイプ | Other | |||||
内容記述 | CELLULOSE. 25(12):6873-6885 (2018) | |||||
資源識別子URI | ||||||
識別子 | http://hdl.handle.net/10091/00021034 | |||||
識別子タイプ | HDL | |||||
ISSN | ||||||
収録物識別子タイプ | ISSN | |||||
収録物識別子 | 0969-0239 | |||||
処理レコードID(総合目録DB) | ||||||
収録物識別子タイプ | NCID | |||||
収録物識別子 | AA11006365 | |||||
DOI | ||||||
関連タイプ | isVersionOf | |||||
識別子タイプ | DOI | |||||
関連識別子 | https://doi.org/10.1007/s10570-018-2053-3 | |||||
権利 | ||||||
権利情報 | The final publication is available at link.springer.com | |||||
権利 | ||||||
権利情報 | The final publication is available at link.springer.com | |||||
著者版フラグ | ||||||
出版タイプ | AM | |||||
出版タイプResource | http://purl.org/coar/version/c_ab4af688f83e57aa |