{"id":8118,"date":"2026-08-04T15:27:33","date_gmt":"2026-08-04T06:27:33","guid":{"rendered":"https:\/\/tuat-chemphys.net\/?p=8118"},"modified":"2026-09-24T20:25:59","modified_gmt":"2026-09-24T11:25:59","slug":"%e3%80%8c%e6%b2%b9%e3%81%ae%e3%81%a4%e3%81%b6%e3%80%8d%e3%81%a7%e7%b2%92%e5%ad%90%e3%81%8c%e5%a4%89%e3%82%8f%e3%82%8b%ef%bc%9f%e3%82%aa%e3%82%a4%e3%83%ab%e3%82%a2%e3%82%a6%e3%83%88%e6%b3%95%e3%81%a8","status":"publish","type":"post","link":"https:\/\/tuat-chemphys.net\/?p=8118","title":{"rendered":"\u300c\u6cb9\u6ef4\u300d\u306e\u306a\u304b\u3067\u4f55\u304c\u8d77\u304d\u3066\u3044\u308b\uff1f\u30aa\u30a4\u30eb\u30a2\u30a6\u30c8\u6cd5\u3067\u7d50\u6676\u306e\u5927\u304d\u3055\u3092\u30b3\u30f3\u30c8\u30ed\u30fc\u30ebWhat happens inside the &#8220;oil droplet&#8221;? Controlling crystal size using the oil-out method."},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">\u6db2\u4f53\u306e\u5206\u96e2\u304c\u751f\u307f\u51fa\u3059\u3001\u7279\u7570\u306a\u6eb6\u6db2\u7d44\u6210\u3068\u64cd\u4f5c\u6761\u4ef6\u306e\u5f71\u97ff\u3068\u306fWhat are the effects of the unique solution composition and operating conditions resulting from liquid-liquid phase separation?<\/p>\n\n\n\n<p class=\"wp-block-paragraph\" style=\"font-size:22px\"><strong>\u25a0\u80cc\u666f\u3068\u554f\u984c\u610f\u8b58<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\" style=\"font-size:17px\">\u533b\u85ac\u54c1\u3084\u98df\u54c1\u306a\u3069\u306e\u88fd\u9020\u30d7\u30ed\u30bb\u30b9\u3067\u306f\u3001\u6eb6\u6db2\u304b\u3089\u76ee\u7684\u306e\u56fa\u4f53\u3092\u56de\u53ce\u3059\u308b\u300c\u975e\u6eb6\u5a92\u6676\u6790\u300d\u3068\u547c\u3070\u308c\u308b\u6280\u8853\u304c\u5e83\u304f\u7528\u3044\u3089\u308c\u3066\u3044\u307e\u3059\u3002\u3053\u306e\u30d7\u30ed\u30bb\u30b9\u306b\u3066\u3001\u76ee\u7684\u7269\u8cea\u304c\u56fa\u4f53\u3068\u3057\u3066\u767a\u751f\u305b\u305a\u3001\u6eb6\u6db2\u4e2d\u306b\u5225\u306e\u6db2\u76f8\u304c\u751f\u3058\u30662\u3064\u306e\u6db2\u4f53\u306b\u5206\u304b\u308c\u308b\u73fe\u8c61\u306f\u300c\u30aa\u30a4\u30eb\u30a2\u30a6\u30c8\uff08\u6cb9\u72b6\u5206\u96e2\uff09\u300d\u3068\u547c\u3070\u308c\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\" style=\"font-size:17px\">\u30aa\u30a4\u30eb\u30a2\u30a6\u30c8\u306f\u7d50\u6676\u5316\u3092\u963b\u5bb3\u3057\u3001\u88fd\u54c1\u306e\u54c1\u8cea\u5b89\u5b9a\u6027\u3084\u518d\u73fe\u6027\u3092\u4f4e\u4e0b\u3055\u305b\u308b\u3053\u3068\u304c\u591a\u3044\u305f\u3081\u3001\u3053\u308c\u307e\u3067\u306e\u7814\u7a76\u3067\u306f\u4e3b\u306b\u30aa\u30a4\u30eb\u30a2\u30a6\u30c8\u3092\u56de\u907f\u30fb\u9632\u6b62\u3059\u308b\u624b\u6cd5\u304c\u691c\u8a0e\u3055\u308c\u3066\u304d\u307e\u3057\u305f\u3002\u3057\u304b\u3057\u3001\u30aa\u30a4\u30eb\u30a2\u30a6\u30c8\u767a\u751f\u6642\u306b\u5f62\u6210\u3055\u308c\u308b\u5c40\u6240\u7684\u306a\u6eb6\u6db2\u7d44\u6210\u3084\u305d\u306e\u74b0\u5883\u3092\u6d3b\u7528\u3057\u305f\u7d50\u6676\u5316\u306b\u95a2\u3059\u308b\u77e5\u898b\u306f\u5341\u5206\u306b\u6574\u7406\u3055\u308c\u3066\u3044\u307e\u305b\u3093\u3067\u3057\u305f\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\" style=\"font-size:22px\"><strong>\u25a0\u7814\u7a76\u306e\u5de5\u592b\u3068\u65b0\u3057\u3044\u70b9<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\" style=\"font-size:17px\">\u672c\u7814\u7a76\u3067\u306f\u3001\u901a\u5e38\u306f\u56de\u907f\u3055\u308c\u308b\u30aa\u30a4\u30eb\u30a2\u30a6\u30c8\u3092\u3001\u9006\u306b\u6d3b\u7528\u3059\u308b\u8996\u70b9\u306b\u7acb\u3061\u3001\u30aa\u30a4\u30eb\u30a2\u30a6\u30c8\u306b\u3088\u3063\u3066<br>\u751f\u3058\u308b\u7279\u7570\u306a\u6eb6\u6db2\u7d44\u6210\u3084\u3001\u652a\u62cc\u306e\u56de\u8ee2\u901f\u5ea6\u30fb\u6e29\u5ea6\u3068\u3044\u3063\u305f\u64cd\u4f5c\u6761\u4ef6\u304c\u7d50\u6676\u7c92\u5b50\u306e\u7279\u6027\uff08\u4e00\u6b21\u7c92\u5b50\u5f84\u3001\u4e8c\u6b21\u7c92\u5b50\u5f84\u3001\u51dd\u96c6\u6319\u52d5\u306a\u3069\uff09\u306b\u53ca\u307c\u3059\u5f71\u97ff\u3092\u7cfb\u7d71\u7684\u306b\u8abf\u67fb\u3057\u307e\u3057\u305f\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\" style=\"font-size:17px\"><strong>\u7279\u7570\u306a\u6eb6\u6db2\u7d44\u6210\u306e\u5f71\u97ff\uff1a<\/strong>\u30aa\u30a4\u30eb\u30a2\u30a6\u30c8\u6642\u306b\u5f62\u6210\u3055\u308c\u308b\u6db2\u6ef4\u5185\u90e8\u306e\u9ad8\u3044\u904e\u98fd\u548c\u5ea6\u304c\u6838\u751f\u6210\u3092\u4fc3\u9032\u3057\u3001\u4e00\u6b21\u7c92\u5b50\u5f84\u306e\u6e1b\u5c11\u3084\u51dd\u96c6\u7c92\u5b50\u6570\u306e\u5909\u5316\u306b\u5f71\u97ff\u3092\u53ca\u307c\u3057\u3066\u3044\u308b\u3053\u3068\u304c\u5b9f\u9a13\u7d50\u679c\u304b\u3089\u793a\u3055\u308c\u307e\u3057\u305f\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\" style=\"font-size:17px\"><strong>\u64cd\u4f5c\u6761\u4ef6\uff08\u56de\u8ee2\u901f\u5ea6\u30fb\u6e29\u5ea6\uff09\u306e\u5f71\u97ff\uff1a<\/strong>\u56de\u8ee2\u901f\u5ea6\u306e\u4e0a\u6607\u3084\u6e29\u5ea6\u306e\u4f4e\u4e0b\u306b\u4f34\u3044\u3001\u305b\u3093\u65ad\u5fdc\u529b\u3084\u904e\u98fd\u548c\u5ea6\u306e\u5909\u5316\u3092\u901a\u3058\u3066\u4e00\u6b21\u7c92\u5b50\u5f84\u304c\u6e1b\u5c11\u3059\u308b\u3053\u3068\u3084\u3001\u56de\u8ee2\u901f\u5ea6\u3084\u6e29\u5ea6\u306e\u5909\u66f4\u306b\u3088\u308a\u4e00\u6b21\u7c92\u5b50\u5f84\u304a\u3088\u3073\u4e8c\u6b21\u7c92\u5b50\u5f84\u3092\u7d042\u500d\u306e\u7bc4\u56f2\u3067\u5909\u5316\u3055\u305b\u5f97\u308b\u3053\u3068\u304c\u78ba\u8a8d\u3055\u308c\u307e\u3057\u305f\u3002<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p class=\"wp-block-paragraph\" style=\"font-size:22px\"><strong>\u307e\u3068\u3081<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\" style=\"font-size:17px\">\u672c\u7814\u7a76\u306b\u3088\u308a\u3001\u30aa\u30a4\u30eb\u30a2\u30a6\u30c8\u3092\u4f34\u3046\u975e\u6eb6\u5a92\u6676\u6790\u3067\u306e\u7d50\u6676\u7c92\u5b50\u306e\u30b5\u30a4\u30ba\u3084\u51dd\u96c6\u6319\u52d5\u306b\u3064\u3044\u3066\u3001\u904e\u98fd\u548c\u5ea6\u306e\u6307\u6a19\u3084\u64cd\u4f5c\u6761\u4ef6\u3068\u306e\u95a2\u4fc2\u6027\u304c\u793a\u3055\u308c\u307e\u3057\u305f\u3002<br>\u3053\u308c\u3089\u306e\u7d50\u679c\u306f\u3001\u3053\u308c\u307e\u3067\u56de\u907f\u306e\u5bfe\u8c61\u3068\u306a\u3063\u3066\u3044\u305f\u30aa\u30a4\u30eb\u30a2\u30a6\u30c8\u73fe\u8c61\u3092\u3001\u9006\u306b\u5229\u7528\u3059\u308b\u3053\u3068\u3067\u7d50\u6676\u7c92\u5b50\u306e\u7279\u6027\u3092\u5236\u5fa1\u3059\u308b\u65b0\u305f\u306a\u77e5\u898b\u3092\u4e0e\u3048\u308b\u3082\u306e\u3068\u3057\u3066\u793a\u3055\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\" style=\"font-size:17px\"><\/p>\n<\/blockquote>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<p class=\"has-primary-color has-text-color has-background has-link-color wp-elements-1 wp-block-paragraph\" style=\"background-color:#e8ffff\"><strong><a href=\"https:\/\/doi.org\/10.1016\/j.molliq.2025.128603\" data-type=\"page\" data-id=\"8120\">10.1016\/j.molliq.2025.128603<\/a>\u3000Full Article<\/strong> &#8220;Effects of solution composition and operational conditions on the characteristics of particles via oiling-out&#8221;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\" style=\"font-size:17px\">Characterization of Crystal Particles Utilizing the Oil-Out Phenomenon in Non-Solvent-Addition Crystallization<\/p>\n\n\n\n<p class=\"wp-block-paragraph\" style=\"font-size:20px\">\u25a0 <strong>Background and Problem Statement<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">&#8220;Non-solvent crystallization&#8221; is a widely used technique in the manufacturing processes of pharmaceuticals and foods to recover a target solid from a solution. During this process, a phenomenon sometimes occurs where the target substance does not immediately form a solid; instead, a separate liquid phase emerges within the solution, resulting in a separation into two liquid phases. This phenomenon is known as &#8220;oil-out&#8221; (or oily phase separation).<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Since oil-out often hinders crystallization and compromises product quality stability and reproducibility, previous research has primarily focused on methods to avoid or prevent it. However, there has been insufficient understanding regarding crystallization processes that leverage the unique local solution compositions and environments formed during oil-out.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\" style=\"font-size:20px\"><strong>\u25a0 Research Approach and Novelty<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">This study adopts a perspective that actively utilizes oil-out\u2014a phenomenon typically avoided\u2014to systematically investigate how the unique solution compositions generated by oil-out and operational conditions (such as stirring speed and temperature) affect crystal particle characteristics (e.g., primary particle size, secondary particle size, and aggregation behavior).<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Impact of unique solution composition:<\/strong> Experimental results demonstrated that the high degree of supersaturation within the droplets formed during oil-out promotes nucleation, thereby influencing the reduction in primary particle size and changes in the number of aggregated particles.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Impact of operational conditions (stirring speed and temperature): <\/strong>It was confirmed that primary particle size decreases as stirring speed increases or temperature drops\u2014changes driven by variations in shear stress and supersaturation levels. Furthermore, the study demonstrated that primary and secondary particle sizes could be varied by approximately twofold through adjustments to stirring speed and temperature.<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p class=\"wp-block-paragraph\" style=\"font-size:17px\"><strong>Summary<\/strong><br>This study has demonstrated the relationships between crystal particle size and aggregation behavior in non-solvent crystallization involving oil-out and parameters such as the degree of supersaturation and operating conditions.<br>These results provide new insights into controlling crystal particle characteristics by actively utilizing the oil-out phenomenon\u2014a process previously regarded as something to be avoided.<\/p>\n<\/blockquote>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<p class=\"has-background wp-block-paragraph\" style=\"background-color:#dfe9fa;font-size:15px\"><strong>\u672c\u8a18\u4e8b\u306f\u3001\u516c\u958b\u6e08\u307f\u8ad6\u6587\u306b\u57fa\u3065\u304d\u5b66\u79d1\u5e83\u5831\u7528\u306b\u7de8\u96c6\u3057\u305f\u7d39\u4ecb\u6587\u3067\u3059\u3002This article is an outreach-style summary prepared for the department website based on the published paper.<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u533b\u85ac\u54c1\u3084\u98df\u54c1\u306a\u3069\u306e\u88fd\u9020\u30d7\u30ed\u30bb\u30b9\u3067\u306f\u3001\u6eb6\u6db2\u304b\u3089\u76ee\u7684\u306e\u56fa\u4f53\u3092\u56de\u53ce\u3059\u308b\u300c\u975e\u6eb6\u5a92\u6676\u6790\u300d\u3068\u547c\u3070\u308c\u308b\u6280\u8853\u304c\u5e83\u304f\u7528\u3044\u3089\u308c\u3066\u3044\u307e\u3059\u3002&#8221;Non-solvent crystallization&#8221; is a widely used technique in the manufacturing processes of pharmaceuticals and foods to recover a target solid from a solution. <\/p>\n","protected":false},"author":5,"featured_media":8119,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"advanced_seo_description":"","jetpack_seo_html_title":"","jetpack_seo_noindex":false,"jetpack_seo_schema_type":"","_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_feature_clip_id":0,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":true,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2},"jetpack_post_was_ever_published":true},"categories":[9],"tags":[13,14],"class_list":["post-8118","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-research","tag-eco-friendly-systems","tag-advanced-materials-creation"],"jetpack_publicize_connections":[],"jetpack_sharing_enabled":true,"jetpack-related-posts":[{"id":7245,"url":"https:\/\/tuat-chemphys.net\/?p=7245","url_meta":{"origin":8118,"position":0},"title":"[PhD Seminar] Controlling Medicine Crystals with Fluid Dynamics: The Power of Taylor-Couette Vortex\u3010\u535a\u58eb\u8ad6\u6587\u516c\u8074\u4f1a\u3011\u6d41\u4f53\u529b\u5b66\u3067\u85ac\u3092\u5275\u308b\uff1a\u30c6\u30a4\u30e9\u30fc\u30fb\u30af\u30a8\u30c3\u30c8\u6d41\u308c\u306b\u3088\u308b\u7d50\u6676\u306e\u5236\u5fa1 (2\/9 10:30)","author":"unet","date":"2026-02","format":false,"excerpt":"This research explores how specialized \"vortex\" flows can be used to create high-quality medicinal crystals. \u533b\u85ac\u54c1\u88fd\u9020\u306e\u65b0\u3057\u3044\u624b\u6cd5\u306b\u95a2\u3059\u308b\u535a\u58eb\u8ad6\u6587\u516c\u8074\u4f1a\u3092\u958b\u50ac\u3057\u307e\u3059\u3002\u672c\u7814\u7a76\u306f\u3001\u7279\u6b8a\u306a\u300c\u6e26\u300d\u306e\u6d41\u308c\u3092\u5229\u7528\u3057\u3066\u3001\u9ad8\u54c1\u8cea\u306a\u85ac\u306e\u7d50\u6676\u3092\u4f5c\u308a\u51fa\u3059\u6280\u8853\u306b\u3064\u3044\u3066\u63a2\u6c42\u3057\u3066\u3044\u307e\u3059\u3002","rel":"","context":"In &quot;Doctoral Thesis \u535a\u58eb\u8ad6\u6587&quot;","block_context":{"text":"Doctoral Thesis \u535a\u58eb\u8ad6\u6587","link":"https:\/\/tuat-chemphys.net\/?cat=22"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/tuat-chemphys.net\/wp-content\/uploads\/2026\/02\/image-2.png?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/tuat-chemphys.net\/wp-content\/uploads\/2026\/02\/image-2.png?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/tuat-chemphys.net\/wp-content\/uploads\/2026\/02\/image-2.png?resize=525%2C300&ssl=1 1.5x"},"classes":[]},{"id":8202,"url":"https:\/\/tuat-chemphys.net\/?p=8202","url_meta":{"origin":8118,"position":1},"title":"Guest Seminar: \u30ca\u30ce\u7d50\u6676\u304b\u3089\u30c7\u30d0\u30a4\u30b9\u3078\uff1a\u5168\u30b9\u30b1\u30fc\u30eb\u3092\u8cab\u304f\u5316\u5b66\u4e3b\u5c0e\u306e\u5236\u5fa1 From Nanocrystals to Devices: Chemistry Driven Control Across Length Scales (Sept. 4, 14:00)","author":"unet","date":"2026-09","format":false,"excerpt":"Maria Ib\u00e1\u00f1ez \u6559\u6388 (Prof. Maria Ib\u00e1\u00f1ez) \u30aa\u30fc\u30b9\u30c8\u30ea\u30a2\u79d1\u5b66\u6280\u8853\u7814\u7a76\u6240 (ISTA) Institute of Science and Technology Austria (ISTA)","rel":"","context":"In &quot;Guest Seminar&quot;","block_context":{"text":"Guest Seminar","link":"https:\/\/tuat-chemphys.net\/?cat=8"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/tuat-chemphys.net\/wp-content\/uploads\/2026\/09\/image-1.png?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/tuat-chemphys.net\/wp-content\/uploads\/2026\/09\/image-1.png?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/tuat-chemphys.net\/wp-content\/uploads\/2026\/09\/image-1.png?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/tuat-chemphys.net\/wp-content\/uploads\/2026\/09\/image-1.png?resize=700%2C400&ssl=1 2x, 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