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Journal Articles

Development of an automated sample wrapping system for organic elemental analyzer

Kokubu, Yoko; Osawa, Takahito; Ozawa, Tatsuhiko; Abe, Kazuhide

Dai-25-Kai AMS Shimpojiumu Hokokushu (Internet), 2 Pages, 2026/01

no abstracts in English

Journal Articles

Microscopic structural changes during the freeze cross-linking reaction in carboxymethyl cellulose nanofiber hydrogels

Miura, Daisuke*; Sekine, Yurina; Nankawa, Takuya; Sugita, Tsuyoshi; Oba, Yojiro; Hiroi, Kosuke; Ozawa, Tatsuhiko

Carbohydrate Polymer Technologies and Applications (Internet), 4, p.100251_1 - 100251_9, 2022/12

The reaction mechanism of carboxymethyl cellulose nanofiber (CMCF) hydrogel formed by freeze-crosslinking was investigated. We succeeded in observing the hierarchical structural changes during the freeze-crosslinking reaction. Freeze-crosslinked CMCF hydrogels exhibited a characteristic hierarchical alignment structure from the angstrom to micrometer scale that differed from normal cross-linked CMCF hydrogels produced by a conventional method without freezing. It was shown that the characteristic hierarchical structure contributes the excellent mechanical properties of freeze-crosslinked CMCF hydrogels.

Patent

セルロースゲルの製造方法及び多孔質体の製造方法

関根 由莉奈; 南川 卓也; 大澤 辰彦

not registered

JP, PCT/JP2024/041664  Patent licensing information

環境負荷や人体への負荷が低く、簡便に、かつ強度が高いゲル及び多孔質体を提供することを課題とする。 本発明のゲルの製造方法では、本発明のゲルの製造方法では、水酸基を有するファイバー状セルロースとアルカリ性試薬を混ぜ合わせ、セルロース溶液を作成する第一の工程と、セルロース溶液を凍結させ、所定時間セルロースとアルカリ性試薬とを反応させてセルロースIからセルロースIIの結晶構造に変性させる第二の工程と、凍結体を融解させる第三の工程と、を有することを特徴とする。

Oral presentation

Development of Hot-Laboratory facility under the project of advanced infrastructure

Taguchi, Taketoshi; Kato, Yoshiaki; Yonekawa, Minoru; Kanazawa, Yoshiharu; Ito, Masayasu; Kurosawa, Makoto; Aoyagi, Tatsuhiko; Tayama, Yoshinobu; Sozawa, Shizuo; Kawamata, Kazuo

no journal, , 

no abstracts in English

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