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タイトル: | Three-dimensional alignment of cellulose II microcrystals under a strong magnetic field |
著者: | Wada, Masahisa https://orcid.org/0000-0002-3508-3307 (unconfirmed) Wakiya, Sayuri Kobayashi, Kayoko https://orcid.org/0000-0003-0459-7900 (unconfirmed) Kimura, Satoshi Kitaoka, Motomitsu Kusumi, Ryosuke Kimura, Fumiko Kimura, Tsunehisa |
著者名の別形: | 和田, 昌久 脇谷, 紗友理 小林, 加代子 久住, 亮介 木村, 史子 木村, 恒久 |
キーワード: | Cellulose II Cellulose oligomer crystal Transmission electron microscopy Magnetic field Synchrotron X-ray diffraction |
発行日: | Jul-2021 |
出版者: | Springer Nature |
誌名: | Cellulose |
巻: | 28 |
号: | 11 |
開始ページ: | 6757 |
終了ページ: | 6765 |
抄録: | In this study, enzymatic synthesis was conducted using cellodextrin phosphorylase (CDP), sucrose phosphorylase (SP), and sucrose with 1-azido-1-deoxy-β-glucoside (β-glucosyl azide) as the acceptor in phosphate buffer at pH 7.0. This yielded cellulose oligomers (degree of polymerization, DP ≈ 10) with azido groups at the reducing end as a white precipitate. A suspension of cellulose microcrystals with exposed azido groups on the surface was obtained via dissolution and recrystallization of the synthetic products dispersed in water by heating. The flat, ribbon-like cellulose microcrystals were a crystalline form of cellulose II and were several micrometers in length and several hundred nanometers in width. The microcrystals were 5.1–5.2 nm thick, which is equivalent to the chain length of cellulose oligomers with DP ≈ 10. When the cellulose II microcrystal suspensions were dried under a horizontal static magnetic field of 8 T, oriented films were obtained, wherein the microcrystals were aligned three-dimensionally. Synchrotron X-ray diffraction studies of the films revealed that the easy and intermediate axes (χ₁ and χ₂, respectively) of the cellulose II crystals corresponded approximately to the [1 1 0] and [1 ̅₁ 0] directions, respectively. |
著作権等: | This version of the article has been accepted for publication, after peer review (when applicable) and is subject to Springer Nature’s AM terms of use, but is not the Version of Record and does not reflect post-acceptance improvements, or any corrections. The Version of Record is available online at: https://doi.org/10.1007/s10570-021-03954-z The full-text file will be made open to the public on 26 May 2022 in accordance with publisher's 'Terms and Conditions for Self-Archiving'. This is not the published version. Please cite only the published version. この論文は出版社版でありません。引用の際には出版社版をご確認ご利用ください。 |
URI: | http://hdl.handle.net/2433/287518 |
DOI(出版社版): | 10.1007/s10570-021-03954-z |
出現コレクション: | 学術雑誌掲載論文等 |
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