{"_buckets": {"deposit": "72b10766-34c4-416d-9b77-a864d92f93b3"}, "_deposit": {"id": "2000734", "owners": [1], "pid": {"revision_id": 0, "type": "depid", "value": "2000734"}, "status": "published"}, "_oai": {"id": "oai:soar-ir.repo.nii.ac.jp:02000734", "sets": ["1309:1310"]}, "author_link": [], "control_number": "2000734", "item_1628147817048": {"attribute_name": "\u51fa\u7248\u30bf\u30a4\u30d7", "attribute_value_mlt": [{"subitem_version_resource": "http://purl.org/coar/version/c_ab4af688f83e57aa", "subitem_version_type": "AM"}]}, "item_6_biblio_info_6": {"attribute_name": "\u66f8\u8a8c\u60c5\u5831", "attribute_value_mlt": [{"bibliographicIssueDates": {"bibliographicIssueDate": "2019-03-27", "bibliographicIssueDateType": "Issued"}, "bibliographicIssueNumber": "5", "bibliographicPageEnd": "1053", "bibliographicPageStart": "1045", "bibliographicVolumeNumber": "1", "bibliographic_titles": [{"bibliographic_title": "ACS Applied Polymer Materials"}]}]}, "item_6_description_20": {"attribute_name": "\u6284\u9332", "attribute_value_mlt": [{"subitem_description": "The\u00a0gelation\u00a0of\u00a0cellulose\u00a0nanofibers (CNFs) through conventional cross-linking or reprecipitation requires the use\u00a0of\u00a0additives. Here, for the first time the\u00a0gelation\u00a0of\u00a0pure\u00a0CNF\u00a0dispersions\u00a0has been achieved solely by mechanical disintegration and a\u00a0hydrothermal\u00a0process without chemical modification. Different concentrations\u00a0of\u00a0cellulose\u00a0powder were dispersed in water, following which these CNF\u00a0dispersions\u00a0were subjected to\u00a0hydrothermal\u00a0treatment at 160 degrees C for different lengths\u00a0of\u00a0time in a sealed reactor. Self-sustaining hydrogels with no discoloration were obtained. The chemical properties and crystal structures\u00a0of\u00a0the CNFs were essentially unchanged following\u00a0hydrothermal\u00a0treatment. Although the molecular mass\u00a0of\u00a0the\u00a0cellulose\u00a0was slightly reduced, the polymer density\u00a0of\u00a0cellulose\u00a0at the same hydrodynamic radius was unchanged by\u00a0hydrothermal\u00a0treatment. Hence, chemically cross-linked structures did not form during the\u00a0hydrothermal\u00a0process. Instead, physical network structures developed within the CNF hydrogels, which increased the mechanical strength. Moreover, this network structure and therefore the strength\u00a0of\u00a0the hydrogel could be improved by increasing the mechanical disintegration time or the\u00a0cellulose\u00a0concentration\u00a0of\u00a0the CNF dispersion. To ensure sufficient\u00a0hydrothermal\u00a0gelation, it was important that the CNF dispersion had a storage modulus greater than 20 Pa.", "subitem_description_language": "en", "subitem_description_type": "Abstract"}]}, "item_6_description_30": {"attribute_name": "\u8cc7\u6e90\u30bf\u30a4\u30d7\uff08\u30b3\u30f3\u30c6\u30f3\u30c4\u306e\u7a2e\u985e\uff09", "attribute_value_mlt": [{"subitem_description": "Article", "subitem_description_type": "Other"}]}, "item_6_description_5": {"attribute_name": "\u5f15\u7528", "attribute_value_mlt": [{"subitem_description": "ACS Applied Polymer Materials. 1: 1045-1053. (2019)", "subitem_description_type": "Other"}]}, "item_6_link_3": {"attribute_name": "\u4fe1\u5dde\u5927\u5b66\u7814\u7a76\u8005\u7dcf\u89a7\u3078\u306e\u30ea\u30f3\u30af", "attribute_value_mlt": [{"subitem_link_text": "\u9577\u7530, \u5149\u6b63", "subitem_link_url": "https://soar-rd.shinshu-u.ac.jp/profile/ja.WmLUZFTp.html"}]}, "item_6_publisher_4": {"attribute_name": "\u51fa\u7248\u8005", "attribute_value_mlt": [{"subitem_publisher": "ACS"}]}, "item_6_relation_48": {"attribute_name": "DOI", "attribute_value_mlt": [{"subitem_relation_name": [{"subitem_relation_name_text": "10.1021/acsapm.9b00076"}], "subitem_relation_type": "isVersionOf", "subitem_relation_type_id": {"subitem_relation_type_id_text": "https://doi.org/10.1021/acsapm.9b00076", "subitem_relation_type_select": "DOI"}}]}, "item_6_source_id_35": {"attribute_name": "ISSN", "attribute_value_mlt": [{"subitem_source_identifier": "2637-6105", "subitem_source_identifier_type": "EISSN"}]}, "item_6_source_id_39": {"attribute_name": "NII ISSN", "attribute_value_mlt": [{"subitem_source_identifier": "2637-6105", "subitem_source_identifier_type": "EISSN"}]}, "item_creator": {"attribute_name": "\u8457\u8005", "attribute_type": "creator", "attribute_value_mlt": [{"creatorNames": [{"creatorName": "Suenaga, Shin", "creatorNameLang": "en"}]}, {"creatorNames": [{"creatorName": "Osada, Mitsumasa", "creatorNameLang": "en"}]}]}, "item_files": {"attribute_name": "\u30d5\u30a1\u30a4\u30eb\u60c5\u5831", "attribute_type": "file", "attribute_value_mlt": [{"accessrole": "open_date", "date": [{"dateType": "Available", "dateValue": "2022-03-10"}], "download_preview_message": "", "file_order": 0, "filename": "17H04893_2.pdf", "format": "application/pdf", "future_date_message": "", "is_thumbnail": false, "mimetype": "application/pdf", "size": 0, "url": {"url": "https://soar-ir.repo.nii.ac.jp/record/2000734/files/17H04893_2.pdf"}, "version_id": "8cc4c95e-876c-411c-b7cd-4e8673619dc1"}]}, "item_keyword": {"attribute_name": "\u30ad\u30fc\u30ef\u30fc\u30c9", "attribute_value_mlt": [{"subitem_subject": "cellulose\u00a0nanofiber", "subitem_subject_language": "en", "subitem_subject_scheme": "Other"}, {"subitem_subject": "wet pulverization", "subitem_subject_language": "en", "subitem_subject_scheme": "Other"}, {"subitem_subject": "hydrothermal\u00a0treatment", "subitem_subject_language": "en", "subitem_subject_scheme": "Other"}, {"subitem_subject": "gelation\u00a0mechanism", "subitem_subject_language": "en", "subitem_subject_scheme": "Other"}, {"subitem_subject": "mechanical strength", "subitem_subject_language": "en", "subitem_subject_scheme": "Other"}, {"subitem_subject": "chemical-free synthesis method", "subitem_subject_language": "en", "subitem_subject_scheme": "Other"}]}, "item_language": {"attribute_name": "\u8a00\u8a9e", "attribute_value_mlt": [{"subitem_language": "eng"}]}, "item_resource_type": {"attribute_name": "\u8cc7\u6e90\u30bf\u30a4\u30d7", "attribute_value_mlt": [{"resourcetype": "journal article", "resourceuri": "http://purl.org/coar/resource_type/c_6501"}]}, "item_title": "Hydrothermal Gelation of Pure Cellulose Nanofiber Dispersions", "item_titles": {"attribute_name": "\u30bf\u30a4\u30c8\u30eb", "attribute_value_mlt": [{"subitem_title": "Hydrothermal Gelation of Pure Cellulose Nanofiber Dispersions", "subitem_title_language": "en"}]}, "item_type_id": "6", "owner": "1", "path": ["1309/1310"], "permalink_uri": "http://hdl.handle.net/10091/0002000734", "pubdate": {"attribute_name": "PubDate", "attribute_value": "2022-03-10"}, "publish_date": "2022-03-10", "publish_status": "0", "recid": "2000734", "relation": {}, "relation_version_is_last": true, "title": ["Hydrothermal Gelation of Pure Cellulose Nanofiber Dispersions"], "weko_shared_id": -1}