{"created":"2023-05-15T12:05:02.203605+00:00","id":9647,"links":{},"metadata":{"_buckets":{"deposit":"b3b9241c-f84e-445c-9004-d6b310dcb879"},"_deposit":{"created_by":3,"id":"9647","owners":[3],"pid":{"revision_id":0,"type":"depid","value":"9647"},"status":"published"},"_oai":{"id":"oai:iwate-u.repo.nii.ac.jp:00009647","sets":["1515:1516"]},"author_link":["73943","73944"],"item_28_alternative_title_23":{"attribute_name":"その他のタイトル","attribute_value_mlt":[{"subitem_alternative_title":"A STUDY OF EXPLANATION OF CRYSTAL GROWTH UNIT IN CRYSTALLIZATION"}]},"item_28_biblio_info_7":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicIssueDates":{"bibliographicIssueDate":"1999-03-01","bibliographicIssueDateType":"Issued"},"bibliographic_titles":[{}]}]},"item_28_date_6":{"attribute_name":"登録日","attribute_value_mlt":[{"subitem_date_issued_datetime":"2011-11-04"}]},"item_28_description_11":{"attribute_name":"抄録","attribute_value_mlt":[{"subitem_description":"科学研究費補助金[基盤研究C](課題番号09650838)研究成果報告書","subitem_description_type":"Abstract"}]},"item_28_description_12":{"attribute_name":"Abstract","attribute_value_mlt":[{"subitem_description":"工業晶析において、結晶の厳密な粒度、純度の制御が重要な課題であり多くの研究がなされている。しがしながら、結晶の発生や成長現象に関しては充分理解されていない。そこで、本研究では、地上実験に加えて、微小重力場を利用して、結晶の発生や成長の様子、発生後の微結晶の挙動を動的光散乱計測システムおよび光学顕微鏡によるその場観察法で調べた。微小重力場では、過飽和溶液中の種晶から発生した結晶核の挙動停止、非合体、および、他領域からの新たな結晶核の発生がなかったこと、また併せて、動的光散乱計測システムで、発生結晶の数、粒径の経時変化に関するナノオ-ダからのデ-タが取得できることを確認した。\n\nまた、結晶成長ユニットに関する知見を得るために、成長結晶の近傍の溶液構造、濃度分布、および不純物あるいは微結晶共存などの溶液環境場を干渉顕微鏡、NMRおよびESCAで測定した。その結果、界面近傍の濃度勾配およびその領域が、過飽和度、結晶面および添加物イオン濃度で左右されること、過飽和溶液中において分子集合体や錯イオンも形成され結晶形状の形成に関与していることを推察した。\n\nさらに、以上の結果を製品結晶粒度の制御に適用することを試みた。工夫し製作した光センサによる粒子濃度のその場測定を利用して、自動粒子分散制御システムを構築し、製品結晶の粒径制御について検討し、本システムが有効であることを確認した。","subitem_description_type":"Other"},{"subitem_description":"In the field of industrial crystallization, the control of crystal size distribution and purity is most essential aspect, and has been investigated extensively. However the phenomena of nucleation and crystal growth have not been well understood. Therefore, in this work, the process of secondary nucleation and the subsequent crystal growth process have been investigated both by fast-dynamic light scattering method and optical microscope under the micro gravity in drop shaft and 1 g. It was found that the movement of crystals formed in solution could be suppressed completely in micro gravity, in which collision and agglomeration phenomena did not take place. No nucleation occurred except for the seed crystal surface. Also it could be measured the number and size of produced crystals with order of nano-meter by fast-dynamic light scattering method. Also, to obtain of information for crystal growth unit, the solution structure in the region of interface of growing crystal have been observed by interference optical microscope, NMR and ESC.It was found that the concentration gradient and that's region appear with the supersaturation, the direction of crystal and addition ion concentration. From the results of NMR and ESC, the existence of molecular conglomeration and complex ions in supersaturated solution was inferred. Still more, to apply to products of crystals the above results, we try to examine for control of the crystal size distribution of products in a batch crystallizer, an in-situ measurement method of solid concentration at different heights in a crystallizer was proposed by using the light sensor with infrared light emitting diodes and phototarnsisters. And this method was applied to get the information about the crystal concentration in a batch crystallizer and to control of crystal dispersion by the change of the agitation rate based on the above information. It was found that this system proposed in this work could follow the crystalization process and was useful the control of the crystal size distribution accuratel.","subitem_description_type":"Other"}]},"item_28_full_name_3":{"attribute_name":"著者別名","attribute_value_mlt":[{"nameIdentifiers":[{}],"names":[{"name":"SHIMIZU, Kenji"}]}]},"item_28_text_4":{"attribute_name":"著者(機関)","attribute_value_mlt":[{"subitem_text_value":"岩手大学工学部"}]},"item_28_version_type_27":{"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":"清水, 健司"}],"nameIdentifiers":[{}]}]},"item_files":{"attribute_name":"ファイル情報","attribute_type":"file","attribute_value_mlt":[{"accessrole":"open_date","date":[{"dateType":"Available","dateValue":"2016-11-14"}],"displaytype":"detail","filename":"kaken09650838.pdf","filesize":[{"value":"3.2 MB"}],"format":"application/pdf","licensetype":"license_note","mimetype":"application/pdf","url":{"label":"kaken09650838.pdf","url":"https://iwate-u.repo.nii.ac.jp/record/9647/files/kaken09650838.pdf"},"version_id":"0daadf55-db80-46d2-adf1-d4e36745d3ac"}]},"item_keyword":{"attribute_name":"キーワード","attribute_value_mlt":[{"subitem_subject":"Crystal growth unit","subitem_subject_scheme":"Other"},{"subitem_subject":"Crystal size distribution","subitem_subject_scheme":"Other"},{"subitem_subject":"Crystallization","subitem_subject_scheme":"Other"},{"subitem_subject":"In-situ measurement","subitem_subject_scheme":"Other"},{"subitem_subject":"Light sensor","subitem_subject_scheme":"Other"},{"subitem_subject":"Micro gravity","subitem_subject_scheme":"Other"},{"subitem_subject":"Nucleation","subitem_subject_scheme":"Other"},{"subitem_subject":"Solution structure","subitem_subject_scheme":"Other"},{"subitem_subject":"その場測定","subitem_subject_scheme":"Other"},{"subitem_subject":"その場観察","subitem_subject_scheme":"Other"},{"subitem_subject":"光センサ","subitem_subject_scheme":"Other"},{"subitem_subject":"反応晶析","subitem_subject_scheme":"Other"},{"subitem_subject":"微小重力","subitem_subject_scheme":"Other"},{"subitem_subject":"微結晶挙動","subitem_subject_scheme":"Other"},{"subitem_subject":"溶液構造","subitem_subject_scheme":"Other"},{"subitem_subject":"結晶化","subitem_subject_scheme":"Other"},{"subitem_subject":"結晶成長","subitem_subject_scheme":"Other"},{"subitem_subject":"結晶成長ユニット","subitem_subject_scheme":"Other"},{"subitem_subject":"結晶成長制御","subitem_subject_scheme":"Other"},{"subitem_subject":"結晶核発生","subitem_subject_scheme":"Other"},{"subitem_subject":"結晶粒度分布","subitem_subject_scheme":"Other"},{"subitem_subject":"結晶系面近傍","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":"research report","resourceuri":"http://purl.org/coar/resource_type/c_18ws"}]},"item_title":"結晶化現象における成長ユニットの解明に関する研究","item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"結晶化現象における成長ユニットの解明に関する研究"}]},"item_type_id":"28","owner":"3","path":["1516"],"pubdate":{"attribute_name":"公開日","attribute_value":"2011-11-04"},"publish_date":"2011-11-04","publish_status":"0","recid":"9647","relation_version_is_last":true,"title":["結晶化現象における成長ユニットの解明に関する研究"],"weko_creator_id":"3","weko_shared_id":-1},"updated":"2023-05-16T11:01:11.456553+00:00"}