{"created":"2023-05-15T12:20:48.677783+00:00","id":11508,"links":{},"metadata":{"_buckets":{"deposit":"78be0dea-1dc8-4b4a-bd01-81756829274d"},"_deposit":{"created_by":1,"id":"11508","owners":[1],"pid":{"revision_id":0,"type":"depid","value":"11508"},"status":"published"},"_oai":{"id":"oai:kansai-u.repo.nii.ac.jp:00011508","sets":["528:1588:1595:1597"]},"author_link":["26788","26795","26801","26793","26796","26791","26799","26790","26794","26798","26803","26789","26802","26800","26792","26797"],"item_9_alternative_title_20":{"attribute_name":"その他のタイトル","attribute_value_mlt":[{"subitem_alternative_title":"Mass Spectrometry of Femto-Second Laser Photodegradation Products of Synthetic Polymers"}]},"item_9_biblio_info_7":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicIssueDates":{"bibliographicIssueDate":"2011-03-05","bibliographicIssueDateType":"Issued"},"bibliographicIssueNumber":"3","bibliographicPageEnd":"260","bibliographicPageStart":"253","bibliographicVolumeNumber":"60","bibliographic_titles":[{"bibliographic_title":"Japan analyst"}]}]},"item_9_description_4":{"attribute_name":"概要","attribute_value_mlt":[{"subitem_description":"MALDI-MS及びLC-APCI-MSを用いてpolyethylene glycol（PEG），polyethlene oxide-block- polypropylene oxide（PEO-b-PPO）及びpolydimethylsiloxane（PDMS）にフェムト秒レーザーを照射したときの分解生成物の分析とその分解機構を調べた．レーザー光分解は水溶液，有機溶媒のどちらでも数分の短時間で起こることが分かった．レーザー光分解生成物の末端基は超音波分解と同じであった．しかし，水溶液中のレーザー光分解生成物は，高分解能マススペクトルの解析から，熱分解生成物と同じではなく酸素原子が付加した分解物が生成していた．したがって，レーザー光分解の機構は，超音波分解と同様にキャビテーションに基づく力学的なせん断及びレーザーアブレーションによる水や溶存酸素からのラジカルの生成による化学反応が分解に関与していることが分かった．\n\\nFemto-second laser photodegradations of polyethylene oxide (PEG), poly(ethylene oxide-b-propylene oxide) copolymer and polydimethylsiloxane (PDMS) were studied to investigate the degradation mechanism. MALDI-TOFMS and LC-APCI-MS were used for detail structural analysis of the degradation products. The results indicated that laser photodegradation proceeds within a few minutes in both aqueous and organic solutions. The degradation products of laser irradiation were identical to those of ultrasonic irradiation, but were not to those of thermal degradation in an aqueous solution using high-resolution mass spectrometry. Therefore, it is suggested that the mechanism of laser photodegradation of the polymers is due to the physical bond scissions through cavitation, just like ultrasonic degradation and the chemical reactions of the polymer chains with radicals formed from solvent or dissolved oxygen in laser-ablation.","subitem_description_type":"Other"}]},"item_9_full_name_3":{"attribute_name":"著者別名","attribute_value_mlt":[{"nameIdentifiers":[{"nameIdentifier":"26796","nameIdentifierScheme":"WEKO"}],"names":[{"name":"Kurokawa, Daisuke"}]},{"nameIdentifiers":[{"nameIdentifier":"26797","nameIdentifierScheme":"WEKO"}],"names":[{"name":"Hisatomi, Hirotaka"}]},{"nameIdentifiers":[{"nameIdentifier":"26798","nameIdentifierScheme":"WEKO"}],"names":[{"name":"Watanabe, Takehiro"}]},{"nameIdentifiers":[{"nameIdentifier":"26799","nameIdentifierScheme":"WEKO"}],"names":[{"name":"Ozawa, Tomoyuki"}]},{"nameIdentifiers":[{"nameIdentifier":"26800","nameIdentifierScheme":"WEKO"}],"names":[{"name":"Nishimoto, Yukari"}]},{"nameIdentifiers":[{"nameIdentifier":"26801","nameIdentifierScheme":"WEKO"}],"names":[{"name":"Kawasaki, Hideya"}]},{"nameIdentifiers":[{"nameIdentifier":"26802","nameIdentifierScheme":"WEKO"}],"names":[{"name":"Ikeda, Noriaki"}]},{"nameIdentifiers":[{"nameIdentifier":"26803","nameIdentifierScheme":"WEKO"}],"names":[{"name":"Arakawa, Ryuichi"}]}]},"item_9_publisher_34":{"attribute_name":"出版者","attribute_value_mlt":[{"subitem_publisher":"日本分析化学会"}]},"item_9_source_id_10":{"attribute_name":"書誌レコードID","attribute_value_mlt":[{"subitem_source_identifier":"AN00222633","subitem_source_identifier_type":"NCID"}]},"item_9_source_id_8":{"attribute_name":"ISSN","attribute_value_mlt":[{"subitem_source_identifier":"05251931","subitem_source_identifier_type":"ISSN"}]},"item_9_version_type_17":{"attribute_name":"著者版フラグ","attribute_value_mlt":[{"subitem_version_resource":"http://purl.org/coar/version/c_970fb48d4fbd8a85","subitem_version_type":"VoR"}]},"item_creator":{"attribute_name":"著者","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"黒川, 大助"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"久富, 広隆"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"渡辺, 健宏"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"小澤, 智行"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"西本, ゆかり"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"川崎, 英也"}],"nameIdentifiers":[{},{}]},{"creatorNames":[{"creatorName":"池田, 憲昭"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"荒川, 隆一"}],"nameIdentifiers":[{}]}]},"item_files":{"attribute_name":"ファイル情報","attribute_type":"file","attribute_value_mlt":[{"accessrole":"open_date","date":[{"dateType":"Available","dateValue":"2019-05-23"}],"displaytype":"detail","filename":"KU-1100-20111127-07.pdf","filesize":[{"value":"1.3 MB"}],"format":"application/pdf","licensetype":"license_note","mimetype":"application/pdf","url":{"label":"KU-1100-20111127-07.pdf","url":"https://kansai-u.repo.nii.ac.jp/record/11508/files/KU-1100-20111127-07.pdf"},"version_id":"67699b6b-68fa-4aa7-9148-a4ef8602bc8d"}]},"item_keyword":{"attribute_name":"キーワード","attribute_value_mlt":[{"subitem_subject":"poly (ethylene oxide-block-propylene oxide)","subitem_subject_scheme":"Other"},{"subitem_subject":"polydimethylsiloxane","subitem_subject_scheme":"Other"},{"subitem_subject":"femto-second laser","subitem_subject_scheme":"Other"},{"subitem_subject":"photodegradation","subitem_subject_scheme":"Other"},{"subitem_subject":"MALDI-MS","subitem_subject_scheme":"Other"},{"subitem_subject":"LC-APCI-MS","subitem_subject_scheme":"Other"}]},"item_language":{"attribute_name":"言語","attribute_value_mlt":[{"subitem_language":"jpn"}]},"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":"合成高分子のフェムト秒レーザー光分解生成物の質量分析","item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"合成高分子のフェムト秒レーザー光分解生成物の質量分析"}]},"item_type_id":"9","owner":"1","path":["1597"],"pubdate":{"attribute_name":"公開日","attribute_value":"2012-01-26"},"publish_date":"2012-01-26","publish_status":"0","recid":"11508","relation_version_is_last":true,"title":["合成高分子のフェムト秒レーザー光分解生成物の質量分析"],"weko_creator_id":"1","weko_shared_id":1},"updated":"2023-05-15T14:41:23.672591+00:00"}