We previously reported that a scaled-down chitin nanofiber (SD-ChNF) dispersion can be obtained from partially deacetylated chitin nanofiber films by ultrasonic treatment in 1.0 mol/L aqueous acetic acid. In this study, we demonstrated that hydrogelation from SD-ChNFs occurs via the reductive amination of monosaccharide residues with the amino groups of chitin. The reductive amination of D-xylose (Xyl) was carried out in the presence of NaBH3CN as a reducing agent in the SD-ChNF/aqueous acetic acid dispersion to produce the Xyl-modified ChNFs. Under selected conditions, a hydrogel was formed in the reaction mixture. The scanning electron microscopy (SEM) image of the lyophilized hydrogel product displayed a network structure at the nanoscale. Hydrogels were also prepared by the reductive amination of D-glucose and N-acetyl-D-glucosamine on SD-ChNFs under the same conditions. Furthermore, the lyophilized products were re-swollen in water, and their weak gel behaviors were characterized by dynamic viscoelastic measurements. Based on the results of reductive amination, precisely performed under various conditions, a mechanism for hydrogelation via the formation of a network structure during reductive amination is proposed.
"}],"abstractLicenseFlag":"disallow"}],"creator":[{"@id":"https://cir.nii.ac.jp/crid/1410572433053129217","@type":"Researcher","personIdentifier":[{"@type":"NRID","@value":"9000415107037"}],"foaf:name":[{"@language":"en","@value":"Watanabe Ryuta"}],"jpcoar:affiliationName":[{"@language":"en","@value":"Graduate School of Science and Engineering, Kagoshima University"}]},{"@id":"https://cir.nii.ac.jp/crid/1410572433053129218","@type":"Researcher","personIdentifier":[{"@type":"NRID","@value":"9000415107038"}],"foaf:name":[{"@language":"en","@value":"Yamamoto Kazuya"}],"jpcoar:affiliationName":[{"@language":"en","@value":"Graduate School of Science and Engineering, Kagoshima University"}]},{"@id":"https://cir.nii.ac.jp/crid/1410572433053129216","@type":"Researcher","personIdentifier":[{"@type":"NRID","@value":"9000415107039"}],"foaf:name":[{"@language":"en","@value":"Kadokawa Jun-ichi"}],"jpcoar:affiliationName":[{"@language":"en","@value":"Graduate School of Science and Engineering, Kagoshima University"}]}],"publication":{"publicationIdentifier":[{"@type":"EISSN","@value":"21897654"},{"@type":"LISSN","@value":"21897654"}],"prism:publicationName":[{"@language":"ja","@value":"Journal of Fiber Science and Technology"},{"@language":"en","@value":"Journal of Fiber Science and Technology"},{"@language":"ja","@value":"JFST"},{"@language":"en","@value":"JFST"}],"dc:publisher":[{"@language":"en","@value":"The Society of Fiber Science and Technology, Japan"},{"@language":"ja","@value":"一般社団法人 繊維学会"}],"prism:publicationDate":"2022","prism:volume":"78","prism:number":"1","prism:startingPage":"10","prism:endingPage":"17"},"reviewed":"false","dcterms:accessRights":"http://purl.org/coar/access_right/c_abf2","url":[{"@id":"https://www.jstage.jst.go.jp/article/fiberst/78/1/78_2022-0002/_pdf"}],"availableAt":"2022","relatedProduct":[{"@id":"https://cir.nii.ac.jp/crid/1360011145712412160","@type":"Article","relationType":["references"],"jpcoar:relatedTitle":[{"@value":"Preparation and gelation behaviors of poly(2-oxazoline)-grafted chitin nanofibers"}]},{"@id":"https://cir.nii.ac.jp/crid/1360011146452748800","@type":"Article","relationType":["references"],"jpcoar:relatedTitle":[{"@value":"Fabrication of Semi‐crystalline Film by Hexanoylation on Self‐assembled Chitin Nanofibers"}]},{"@id":"https://cir.nii.ac.jp/crid/1360292620289631232","@type":"Article","relationType":["references"],"jpcoar:relatedTitle":[{"@value":"Structure–property relationships in food biopolymer gels and solutions"}]},{"@id":"https://cir.nii.ac.jp/crid/1360292620584460032","@type":"Article","relationType":["references"],"jpcoar:relatedTitle":[{"@value":"Chitin and chitosan polymers: Chemistry, solubility and fiber formation"}]},{"@id":"https://cir.nii.ac.jp/crid/1360292621111984384","@type":"Article","relationType":["references"],"jpcoar:relatedTitle":[{"@value":"TEMPO-mediated oxidation of β-chitin to prepare individual nanofibrils"}]},{"@id":"https://cir.nii.ac.jp/crid/1360292621193112704","@type":"Article","relationType":["references"],"jpcoar:relatedTitle":[{"@value":"Spray-Coated Multilayer Cellulose Nanocrystal—Chitin Nanofiber Films for Barrier Applications"}]},{"@id":"https://cir.nii.ac.jp/crid/1360306905166275584","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"Fabrication of self-reinforced chitin composites by double crystalline blend approach"}]},{"@id":"https://cir.nii.ac.jp/crid/1360574094203780096","@type":"Article","relationType":["references"],"jpcoar:relatedTitle":[{"@value":"Bioinspired hydrogels: Quinone crosslinking reaction for chitin nanofibers with enhanced mechanical strength via surface deacetylation"}]},{"@id":"https://cir.nii.ac.jp/crid/1360846640882406656","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["references"],"jpcoar:relatedTitle":[{"@value":"Comparative characterization of aqueous dispersions and cast films of different chitin nanowhiskers/nanofibers"}]},{"@id":"https://cir.nii.ac.jp/crid/1360846641807552512","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["references"],"jpcoar:relatedTitle":[{"@value":"Chitin nanofibers: preparations, modifications, and applications"}]},{"@id":"https://cir.nii.ac.jp/crid/1360855570009563904","@type":"Article","relationType":["references"],"jpcoar:relatedTitle":[{"@value":"Strong and Tough Chitin Film from α-Chitin Nanofibers Prepared by High Pressure Homogenization and Chitosan Addition"}]},{"@id":"https://cir.nii.ac.jp/crid/1360869855581416320","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"Hydrophobization of Chitin Nanofibers by Grafting of Partially 2-Deoxygenated Amyloses Through Enzymatic Approach"}]},{"@id":"https://cir.nii.ac.jp/crid/1361137044832815232","@type":"Article","relationType":["references"],"jpcoar:relatedTitle":[{"@value":"Chitin and chitosan: Properties and applications"}]},{"@id":"https://cir.nii.ac.jp/crid/1361137045177591680","@type":"Article","relationType":["references"],"jpcoar:relatedTitle":[{"@value":"Chitin Nanofiber Paper toward Optical (Bio)sensing Applications"}]},{"@id":"https://cir.nii.ac.jp/crid/1361137045399106688","@type":"Article","relationType":["references"],"jpcoar:relatedTitle":[{"@value":"A weak gel model for foods"}]},{"@id":"https://cir.nii.ac.jp/crid/1361699995717899264","@type":"Article","relationType":["references"],"jpcoar:relatedTitle":[{"@value":"Gelation mechanism of cellulose nanofibre gels: A colloids and interfacial perspective"}]},{"@id":"https://cir.nii.ac.jp/crid/1361981470735565440","@type":"Article","relationType":["references"],"jpcoar:relatedTitle":[{"@value":"“Weak Gel”-Type Rheological Properties of Aqueous Dispersions of Nonaggregated κ-Carrageenan Helices"}]},{"@id":"https://cir.nii.ac.jp/crid/1362262943359591168","@type":"Article","relationType":["references"],"jpcoar:relatedTitle":[{"@value":"Preparation of chitin nanowhiskers using an ionic liquid and their composite materials with poly(vinyl alcohol)"}]},{"@id":"https://cir.nii.ac.jp/crid/1362262943624753152","@type":"Article","relationType":["references"],"jpcoar:relatedTitle":[{"@value":"Crab Chitin‐Based 2D Soft Nanomaterials for Fully Biobased Electric Devices"}]},{"@id":"https://cir.nii.ac.jp/crid/1362262945049216128","@type":"Article","relationType":["references"],"jpcoar:relatedTitle":[{"@value":"Selective Isolation Methods for Cellulose and Chitin Nanocrystals"}]},{"@id":"https://cir.nii.ac.jp/crid/1362825894230628736","@type":"Article","relationType":["references"],"jpcoar:relatedTitle":[{"@value":"Emerging Biomedical Applications of Nano-Chitins and Nano-Chitosans Obtained via Advanced Eco-Friendly Technologies from Marine Resources"}]},{"@id":"https://cir.nii.ac.jp/crid/1362825894500082048","@type":"Article","relationType":["references"],"jpcoar:relatedTitle":[{"@value":"Chitin Nanocrystals Prepared by TEMPO-Mediated Oxidation of α-Chitin"}]},{"@id":"https://cir.nii.ac.jp/crid/1363107369330712832","@type":"Article","relationType":["references"],"jpcoar:relatedTitle":[{"@value":"Water Purification: Nanocellulose‐Enabled Membranes for Water Purification: Perspectives (Adv. Sustainable Syst. 5/2020)"}]},{"@id":"https://cir.nii.ac.jp/crid/1363388843732816512","@type":"Article","relationType":["references"],"jpcoar:relatedTitle":[{"@value":"Robust Self-Standing Chitin Nanofiber/Nanowhisker Hydrogels with Designed Surface Charges and Ultralow Mass Content via Gas Phase Coagulation"}]},{"@id":"https://cir.nii.ac.jp/crid/1363388843947535744","@type":"Article","relationType":["references"],"jpcoar:relatedTitle":[{"@value":"Preparation of Self-Assembled Chitin Nanofibers by Regeneration from Ion Gels Using Calcium Halide · dihydrate/Methanol Solutions"}]},{"@id":"https://cir.nii.ac.jp/crid/1363388844025498624","@type":"Article","relationType":["references"],"jpcoar:relatedTitle":[{"@value":"Nanostructurally Controlled Hydrogel Based on Small‐Diameter Native Chitin Nanofibers: Preparation, Structure, and Properties"}]},{"@id":"https://cir.nii.ac.jp/crid/1363388845885243136","@type":"Article","relationType":["references"],"jpcoar:relatedTitle":[{"@value":"Fabrication of highly flexible nanochitin film and its composite film with anionic polysaccharide"}]},{"@id":"https://cir.nii.ac.jp/crid/1363670320692487296","@type":"Article","relationType":["references"],"jpcoar:relatedTitle":[{"@value":"Preparation of high-strength α-chitin nanofiber-based hydrogels under mild conditions"}]},{"@id":"https://cir.nii.ac.jp/crid/1363951793655044992","@type":"Article","relationType":["references"],"jpcoar:relatedTitle":[{"@value":"Chitin and Chitosan: Functional Biopolymers from Marine Crustaceans"}]},{"@id":"https://cir.nii.ac.jp/crid/1364233269551993984","@type":"Article","relationType":["references"],"jpcoar:relatedTitle":[{"@value":"Chitin and Chitosan Nanofibers: Preparation and Chemical Modifications"}]},{"@id":"https://cir.nii.ac.jp/crid/1364233270165213312","@type":"Article","relationType":["references"],"jpcoar:relatedTitle":[{"@value":"Allyl‐Functionalised Ionic Liquids: Synthesis, Characterisation, and Reactivity"}]},{"@id":"https://cir.nii.ac.jp/crid/1364233270510431616","@type":"Article","relationType":["references"],"jpcoar:relatedTitle":[{"@value":"Structure characterization of cellulose nanofiber hydrogel as functions of concentration and ionic strength"}]},{"@id":"https://cir.nii.ac.jp/crid/2051433317025194496","@type":"Article","relationType":["references"],"jpcoar:relatedTitle":[{"@value":"Gel formation from self-assembled chitin nanofiber film by grafting of poly(2-methyl-2-oxazoline)"}]}],"dataSourceIdentifier":[{"@type":"JALC","@value":"oai:japanlinkcenter.org:2009114404"},{"@type":"CROSSREF","@value":"10.2115/fiberst.2022-0002"},{"@type":"CIA","@value":"130008154526"},{"@type":"OPENAIRE","@value":"doi_________::b6b0746564ae0c29f47837027baa87f7"},{"@type":"CROSSREF","@value":"10.1016/j.ijbiomac.2024.138441_references_DOI_9EzghDiWas7s5Qn6oOI2lGYB6wM"},{"@type":"CROSSREF","@value":"10.3390/molecules30010016_references_DOI_9EzghDiWas7s5Qn6oOI2lGYB6wM"}]}