WEKO3
アイテム
{"_buckets": {"deposit": "3f89842f-a798-4a1e-a8fa-6acf890be487"}, "_deposit": {"created_by": 3, "id": "5533", "owners": [3], "pid": {"revision_id": 0, "type": "depid", "value": "5533"}, "status": "published"}, "_oai": {"id": "oai:kyutech.repo.nii.ac.jp:00005533", "sets": ["9"]}, "author_link": ["22400", "22403", "22006", "21961", "8065"], "item_21_biblio_info_6": {"attribute_name": "書誌情報", "attribute_value_mlt": [{"bibliographicIssueDates": {"bibliographicIssueDate": "2004-09-11", "bibliographicIssueDateType": "Issued"}, "bibliographicIssueNumber": "2", "bibliographicPageEnd": "208", "bibliographicPageStart": "197", "bibliographicVolumeNumber": "86", "bibliographic_titles": [{"bibliographic_title": "Polymer Degradation and Stability"}]}]}, "item_21_description_4": {"attribute_name": "抄録", "attribute_value_mlt": [{"subitem_description": "Thermal degradation of poly(lactic acid) stereocomplex (scPLA) was investigated to clarify the pyrolysis mechanism. Three scPLA samples with different chain end structures were prepared, namely, as-polymerized scPLA-ap, precipitated-with-methanol scPLA-pr, and purified metal-free scPLA-H. From the analyses of thermal degradation kinetics and pyrolyzates of the scPLA samples, typical degradation mechanisms of these scPLAs were proposed as follows: The pyrolysis of scPLA-ap proceeds through main unzipping depolymerization caused by Sn-alkoxide chain ends with apparent Ea = 80-100kJ mol-1, showing zero-order weight loss behavior. The pyrolysis of scPLA-pr also proceeds via a zero-order weight loss process consisting of main Sn-catalyzed selective lactide elimination with apparent Ea = 100-120kJ mol-1 caused by Sn-carboxylate chain ends. The pyrolyzates from scPLA-ap and scPLA–pr were predominantly L,L-/D,D-lactides. In the case of scPLA-H, random degradation is a main process, producing a large amount of meso-lactide and cyclic oligomers. These degradation mechanisms were nearly the same as those of the corresponding PLLAs, except that the scPLA-ap pyrolysis started at higher temperature due to the higher melting point of scPLA.", "subitem_description_type": "Abstract"}]}, "item_21_description_60": {"attribute_name": "資源タイプ", "attribute_value_mlt": [{"subitem_description": "Journal Article", "subitem_description_type": "Other"}]}, "item_21_link_62": {"attribute_name": "研究者情報", "attribute_value_mlt": [{"subitem_link_text": "https://hyokadb02.jimu.kyutech.ac.jp/html/397_ja.html", "subitem_link_url": "https://hyokadb02.jimu.kyutech.ac.jp/html/397_ja.html"}]}, "item_21_publisher_7": {"attribute_name": "出版者", "attribute_value_mlt": [{"subitem_publisher": "Elsevier"}]}, "item_21_relation_12": {"attribute_name": "DOI", "attribute_value_mlt": [{"subitem_relation_type": "isVersionOf", "subitem_relation_type_id": {"subitem_relation_type_id_text": "https://doi.org/10.1016/j.polymdegradstab.2004.03.001", "subitem_relation_type_select": "DOI"}}]}, "item_21_rights_13": {"attribute_name": "権利", "attribute_value_mlt": [{"subitem_rights": "Copyright (c) 2004 Elsevier Ltd. All rights reserved."}]}, "item_21_select_59": {"attribute_name": "査読の有無", "attribute_value_mlt": [{"subitem_select_item": "yes"}]}, "item_21_source_id_8": {"attribute_name": "ISSN", "attribute_value_mlt": [{"subitem_source_identifier": "0141-3910", "subitem_source_identifier_type": "ISSN"}]}, "item_21_text_28": {"attribute_name": "論文ID(連携)", "attribute_value_mlt": [{"subitem_text_value": "10037574"}]}, "item_21_text_36": {"attribute_name": "著者所属", "attribute_value_mlt": [{"subitem_text_value": "Molecular Engineering Institute, Kinki University, 11-6 Kayanomori, Iizuka, Fukuoka 820-8555, Japan, Graduate School of Life Science and Systems Engineering, Kyushu Institute of Technology, 1-1 Hibikino, Kitakyushu, Fukuoka 808-0196, Japan"}, {"subitem_text_value": "Molecular Engineering Institute, Kinki University, 11-6 Kayanomori, Iizuka, Fukuoka 820-8555, Japan"}, {"subitem_text_value": "Graduate School of Life Science and Systems Engineering, Kyushu Institute of Technology, 1-1 Hibikino, Kitakyushu, Fukuoka 808-0196, Japan"}, {"subitem_text_value": "National Institute of Advanced Industrial Science and Technology (AIST), AIST Tsukuba Central 6, Tsukuba, Ibaraki 305-8566, Japan"}, {"subitem_text_value": "Molecular Engineering Institute, Kinki University, 11-6 Kayanomori, Iizuka, Fukuoka 820-8555, Japan, Faculty of Engineering, Yamagata University, 4-3-16 Jonan, Yonezawa, Yamagata 992-8510, Japan"}]}, "item_21_text_63": {"attribute_name": "連携ID", "attribute_value_mlt": [{"subitem_text_value": "6983"}]}, "item_21_version_type_58": {"attribute_name": "著者版フラグ", "attribute_value_mlt": [{"subitem_version_resource": "http://purl.org/coar/version/c_ab4af688f83e57aa", "subitem_version_type": "AM"}]}, "item_creator": {"attribute_name": "著者", "attribute_type": "creator", "attribute_value_mlt": [{"creatorNames": [{"creatorName": "Fan, Yujiang"}], "nameIdentifiers": [{"nameIdentifier": "22400", "nameIdentifierScheme": "WEKO"}]}, {"creatorAffiliations": [{"affiliationNameIdentifiers": [], "affiliationNames": [{"affiliationName": "", "affiliationNameLang": "ja"}]}], "creatorNames": [{"creatorName": "Nishida, Haruo", "creatorNameLang": "en"}, {"creatorName": "西田, 治男", "creatorNameLang": "ja"}, {"creatorName": "ニシダ, ハルオ", "creatorNameLang": "ja-Kana"}], "familyNames": [{"familyName": "Nishida", "familyNameLang": "en"}, {"familyName": "西田", "familyNameLang": "ja"}, {"familyName": "ニシダ", "familyNameLang": "ja-Kana"}], "givenNames": [{"givenName": "Haruo", "givenNameLang": "en"}, {"givenName": "治男", "givenNameLang": "ja"}, {"givenName": "ハルオ", "givenNameLang": "ja-Kana"}], "nameIdentifiers": [{"nameIdentifier": "21961", "nameIdentifierScheme": "WEKO"}, {"nameIdentifier": "50330238", "nameIdentifierScheme": "e-Rad", "nameIdentifierURI": "https://nrid.nii.ac.jp/ja/nrid/1000050330238"}, {"nameIdentifier": "7402596816", "nameIdentifierScheme": "Scopus著者ID", "nameIdentifierURI": "https://www.scopus.com/authid/detail.uri?authorId=7402596816"}, {"nameIdentifier": "0000-0001-6645-6463", "nameIdentifierScheme": "ORCiD", "nameIdentifierURI": "https://orcid.org/0000-0001-6645-6463"}]}, {"creatorAffiliations": [{"affiliationNameIdentifiers": [], "affiliationNames": [{"affiliationName": "", "affiliationNameLang": "ja"}]}], "creatorNames": [{"creatorName": "Shirai, Yoshihito", "creatorNameLang": "en"}, {"creatorName": "白井, 義人", "creatorNameLang": "ja"}, {"creatorName": "シライ, ヨシヒト", "creatorNameLang": "ja-Kana"}], "familyNames": [{"familyName": "Shirai", "familyNameLang": "en"}, {"familyName": "白井", "familyNameLang": "ja"}, {"familyName": "シライ", "familyNameLang": "ja-Kana"}], "givenNames": [{"givenName": "Yoshihito", "givenNameLang": "en"}, {"givenName": "義人", "givenNameLang": "ja"}, {"givenName": "ヨシヒト", "givenNameLang": "ja-Kana"}], "nameIdentifiers": [{"nameIdentifier": "8065", "nameIdentifierScheme": "WEKO"}, {"nameIdentifier": "50175395", "nameIdentifierScheme": "e-Rad", "nameIdentifierURI": "https://nrid.nii.ac.jp/ja/nrid/1000050175395"}, {"nameIdentifier": "7202788909", "nameIdentifierScheme": "Scopus著者ID", "nameIdentifierURI": "https://www.scopus.com/authid/detail.uri?authorId=7202788909"}, {"nameIdentifier": "314", "nameIdentifierScheme": "九工大研究者情報", "nameIdentifierURI": "https://hyokadb02.jimu.kyutech.ac.jp/html/314_ja.html"}]}, {"creatorNames": [{"creatorName": "Tokiwa, Yutaka"}], "nameIdentifiers": [{"nameIdentifier": "22403", "nameIdentifierScheme": "WEKO"}]}, {"creatorAffiliations": [{"affiliationNameIdentifiers": [], "affiliationNames": [{"affiliationName": "", "affiliationNameLang": "ja"}]}], "creatorNames": [{"creatorName": "Endo, Takeshi", "creatorNameLang": "en"}, {"creatorName": "遠藤, 剛", "creatorNameLang": "ja"}, {"creatorName": "エンドウ, タケシ", "creatorNameLang": "ja-Kana"}], "familyNames": [{"familyName": "Endo", "familyNameLang": "en"}, {"familyName": "遠藤", "familyNameLang": "ja"}, {"familyName": "エンドウ", "familyNameLang": "ja-Kana"}], "givenNames": [{"givenName": "Takeshi", "givenNameLang": "en"}, {"givenName": "剛", "givenNameLang": "ja"}, {"givenName": "タケシ", "givenNameLang": "ja-Kana"}], "nameIdentifiers": [{"nameIdentifier": "22006", "nameIdentifierScheme": "WEKO"}, {"nameIdentifier": "56699254000", "nameIdentifierScheme": "Scopus著者ID", "nameIdentifierURI": "https://www.scopus.com/authid/detail.uri?authorId=56699254000"}]}]}, "item_files": {"attribute_name": "ファイル情報", "attribute_type": "file", "attribute_value_mlt": [{"accessrole": "open_date", "date": [{"dateType": "Available", "dateValue": "2018-05-08"}], "displaytype": "detail", "download_preview_message": "", "file_order": 0, "filename": "j.polymdegradstab.2004.03.001.pdf", "filesize": [{"value": "452.4 kB"}], "format": "application/pdf", "future_date_message": "", "is_thumbnail": false, "licensetype": "license_free", "mimetype": "application/pdf", "size": 452400.0, "url": {"label": "j.polymdegradstab.2004.03.001.pdf", "url": "https://kyutech.repo.nii.ac.jp/record/5533/files/j.polymdegradstab.2004.03.001.pdf"}, "version_id": "1c35f2d5-8429-4817-837d-74a88f4a808a"}]}, "item_keyword": {"attribute_name": "キーワード", "attribute_value_mlt": [{"subitem_subject": "Poly lactide", "subitem_subject_scheme": "Other"}, {"subitem_subject": "Poly(lactic acid)", "subitem_subject_scheme": "Other"}, {"subitem_subject": "Stereocomplex", "subitem_subject_scheme": "Other"}, {"subitem_subject": "Thermal degradation", "subitem_subject_scheme": "Other"}, {"subitem_subject": "Thermal stability", "subitem_subject_scheme": "Other"}, {"subitem_subject": "Pyrolysis", "subitem_subject_scheme": "Other"}, {"subitem_subject": "Kinetics", "subitem_subject_scheme": "Other"}]}, "item_language": {"attribute_name": "言語", "attribute_value_mlt": [{"subitem_language": "eng"}]}, "item_resource_type": {"attribute_name": "資源タイプ", "attribute_value_mlt": [{"resourcetype": "journal article", "resourceuri": "http://purl.org/coar/resource_type/c_6501"}]}, "item_title": "Thermal Degradation Behavior of Poly (lactic acid) Stereocomplex", "item_titles": {"attribute_name": "タイトル", "attribute_value_mlt": [{"subitem_title": "Thermal Degradation Behavior of Poly (lactic acid) Stereocomplex"}]}, "item_type_id": "21", "owner": "3", "path": ["9"], "permalink_uri": "http://hdl.handle.net/10228/00006744", "pubdate": {"attribute_name": "公開日", "attribute_value": "2018-05-08"}, "publish_date": "2018-05-08", "publish_status": "0", "recid": "5533", "relation": {}, "relation_version_is_last": true, "title": ["Thermal Degradation Behavior of Poly (lactic acid) Stereocomplex"], "weko_shared_id": 3}
Thermal Degradation Behavior of Poly (lactic acid) Stereocomplex
http://hdl.handle.net/10228/00006744
http://hdl.handle.net/10228/0000674472ce8dbb-2c6e-42ff-a4e7-b04c8e77ce1c
名前 / ファイル | ライセンス | アクション |
---|---|---|
j.polymdegradstab.2004.03.001.pdf (452.4 kB)
|
|
Item type | 学術雑誌論文 = Journal Article(1) | |||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
公開日 | 2018-05-08 | |||||||||||||||||
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 | |||||||||||||||||
タイトル | ||||||||||||||||||
タイトル | Thermal Degradation Behavior of Poly (lactic acid) Stereocomplex | |||||||||||||||||
言語 | ||||||||||||||||||
言語 | eng | |||||||||||||||||
著者 |
Fan, Yujiang
× Fan, Yujiang× 西田, 治男
WEKO
21961
× 白井, 義人
WEKO
8065
× Tokiwa, Yutaka× 遠藤, 剛 |
|||||||||||||||||
抄録 | ||||||||||||||||||
内容記述タイプ | Abstract | |||||||||||||||||
内容記述 | Thermal degradation of poly(lactic acid) stereocomplex (scPLA) was investigated to clarify the pyrolysis mechanism. Three scPLA samples with different chain end structures were prepared, namely, as-polymerized scPLA-ap, precipitated-with-methanol scPLA-pr, and purified metal-free scPLA-H. From the analyses of thermal degradation kinetics and pyrolyzates of the scPLA samples, typical degradation mechanisms of these scPLAs were proposed as follows: The pyrolysis of scPLA-ap proceeds through main unzipping depolymerization caused by Sn-alkoxide chain ends with apparent Ea = 80-100kJ mol-1, showing zero-order weight loss behavior. The pyrolysis of scPLA-pr also proceeds via a zero-order weight loss process consisting of main Sn-catalyzed selective lactide elimination with apparent Ea = 100-120kJ mol-1 caused by Sn-carboxylate chain ends. The pyrolyzates from scPLA-ap and scPLA–pr were predominantly L,L-/D,D-lactides. In the case of scPLA-H, random degradation is a main process, producing a large amount of meso-lactide and cyclic oligomers. These degradation mechanisms were nearly the same as those of the corresponding PLLAs, except that the scPLA-ap pyrolysis started at higher temperature due to the higher melting point of scPLA. | |||||||||||||||||
書誌情報 |
Polymer Degradation and Stability 巻 86, 号 2, p. 197-208, 発行日 2004-09-11 |
|||||||||||||||||
出版社 | ||||||||||||||||||
出版者 | Elsevier | |||||||||||||||||
DOI | ||||||||||||||||||
関連タイプ | isVersionOf | |||||||||||||||||
識別子タイプ | DOI | |||||||||||||||||
関連識別子 | https://doi.org/10.1016/j.polymdegradstab.2004.03.001 | |||||||||||||||||
ISSN | ||||||||||||||||||
収録物識別子タイプ | ISSN | |||||||||||||||||
収録物識別子 | 0141-3910 | |||||||||||||||||
著作権関連情報 | ||||||||||||||||||
権利情報 | Copyright (c) 2004 Elsevier Ltd. All rights reserved. | |||||||||||||||||
キーワード | ||||||||||||||||||
主題Scheme | Other | |||||||||||||||||
主題 | Poly lactide | |||||||||||||||||
キーワード | ||||||||||||||||||
主題Scheme | Other | |||||||||||||||||
主題 | Poly(lactic acid) | |||||||||||||||||
キーワード | ||||||||||||||||||
主題Scheme | Other | |||||||||||||||||
主題 | Stereocomplex | |||||||||||||||||
キーワード | ||||||||||||||||||
主題Scheme | Other | |||||||||||||||||
主題 | Thermal degradation | |||||||||||||||||
キーワード | ||||||||||||||||||
主題Scheme | Other | |||||||||||||||||
主題 | Thermal stability | |||||||||||||||||
キーワード | ||||||||||||||||||
主題Scheme | Other | |||||||||||||||||
主題 | Pyrolysis | |||||||||||||||||
キーワード | ||||||||||||||||||
主題Scheme | Other | |||||||||||||||||
主題 | Kinetics | |||||||||||||||||
出版タイプ | ||||||||||||||||||
出版タイプ | AM | |||||||||||||||||
出版タイプResource | http://purl.org/coar/version/c_ab4af688f83e57aa | |||||||||||||||||
査読の有無 | ||||||||||||||||||
値 | yes | |||||||||||||||||
研究者情報 | ||||||||||||||||||
https://hyokadb02.jimu.kyutech.ac.jp/html/397_ja.html | ||||||||||||||||||
論文ID(連携) | ||||||||||||||||||
10037574 | ||||||||||||||||||
連携ID | ||||||||||||||||||
6983 | ||||||||||||||||||
資料タイプ | ||||||||||||||||||
内容記述タイプ | Other | |||||||||||||||||
内容記述 | Journal Article | |||||||||||||||||
著者所属 | ||||||||||||||||||
Molecular Engineering Institute, Kinki University, 11-6 Kayanomori, Iizuka, Fukuoka 820-8555, Japan, Graduate School of Life Science and Systems Engineering, Kyushu Institute of Technology, 1-1 Hibikino, Kitakyushu, Fukuoka 808-0196, Japan | ||||||||||||||||||
著者所属 | ||||||||||||||||||
Molecular Engineering Institute, Kinki University, 11-6 Kayanomori, Iizuka, Fukuoka 820-8555, Japan | ||||||||||||||||||
著者所属 | ||||||||||||||||||
Graduate School of Life Science and Systems Engineering, Kyushu Institute of Technology, 1-1 Hibikino, Kitakyushu, Fukuoka 808-0196, Japan | ||||||||||||||||||
著者所属 | ||||||||||||||||||
National Institute of Advanced Industrial Science and Technology (AIST), AIST Tsukuba Central 6, Tsukuba, Ibaraki 305-8566, Japan | ||||||||||||||||||
著者所属 | ||||||||||||||||||
Molecular Engineering Institute, Kinki University, 11-6 Kayanomori, Iizuka, Fukuoka 820-8555, Japan, Faculty of Engineering, Yamagata University, 4-3-16 Jonan, Yonezawa, Yamagata 992-8510, Japan |