{"id":13190,"date":"2024-09-03T11:56:25","date_gmt":"2024-09-03T02:56:25","guid":{"rendered":"https:\/\/www.mecc-nano.com\/?p=13190"},"modified":"2024-10-02T15:17:40","modified_gmt":"2024-10-02T06:17:40","slug":"__trashed","status":"publish","type":"post","link":"https:\/\/mecc-jp.com\/nano\/latest-news\/13190\/","title":{"rendered":"HELP Vol. 01: How to Spin Gelatin Effectively"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">The launch of \u2018HELP\u2019 has finally begun!<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">In the first session, we conducted an experiment on how to effectively spin \u2018gelatin,\u2019 which tends to solidify easily.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">&gt;&gt;<a href=\"https:\/\/mecc-jp.com\/nano\/latest-news\/12828\/\">What is &#8220;HELP&#8221;?<\/a><\/p>\n\n\n\n<p class=\"has-text-align-center has-medium-font-size wp-block-paragraph\">Members who participated in this \u2018HELP\u2019 experiment: Gao, Masagaki, and Wang.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Making solution for spinning nanofibers using gelatin<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">The three( Gao, Masagaki, and Wang) began preparing the solution for spinning gelatin using our electrospinning device, NANON.<\/p>\n\n\n\n<p class=\"has-medium-font-size wp-block-paragraph\">However\u2026<\/p>\n\n\n\n<p class=\"has-text-align-center has-vivid-red-color has-text-color has-link-color has-large-font-size wp-elements-1 wp-block-paragraph\"><strong>The 30wt% gelatin aqueous solution solidified!<\/strong><\/p>\n\n\n\n<div style=\"height:32px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<div class=\"wp-block-liquid-speech-balloon liquid-speech-balloon-wrap liquid-speech-balloon-06\"><div class=\"liquid-speech-balloon-avatar\"><\/div><div class=\"liquid-speech-balloon-text\"><p>Gelatin solidifies so quickly\u2026<br>Is there any way to prevent it from solidifying?<\/p><div class=\"liquid-speech-balloon-arrow\"><\/div><\/div><\/div>\n\n\n\n<div class=\"wp-block-liquid-speech-balloon liquid-speech-balloon-wrap liquid-speech-balloon-07\"><div class=\"liquid-speech-balloon-avatar\"><\/div><div class=\"liquid-speech-balloon-text\"><p>Isn\u2019t there an experienced spinning expert at MECC?<br>Let\u2019s go ask in the lab!<\/p><div class=\"liquid-speech-balloon-arrow\"><\/div><\/div><\/div>\n\n\n\n<p class=\"wp-block-paragraph\">They went and asked the lab member Ms. Nakatsuka for help.<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img decoding=\"async\" src=\"https:\/\/www.mecc-jp.com\/nano\/wp-content\/uploads\/2024\/08\/240828_1.webp\" alt=\"\" class=\"wp-image-4321\"\/><figcaption class=\"wp-element-caption\">HELP members asking questions to Mr. Nakatsuka<\/figcaption><\/figure>\n<\/div>\n\n\n<div class=\"wp-block-liquid-speech-balloon liquid-speech-balloon-wrap liquid-speech-balloon-08 liquid-speech-balloon-right\"><div class=\"liquid-speech-balloon-avatar\"><\/div><div class=\"liquid-speech-balloon-text\"><p>Nakatsuka-san! HELP PLEASE!!<br>We wanted to spin gelatin and made a solution, but it turned solid.<\/p><div class=\"liquid-speech-balloon-arrow\"><\/div><\/div><\/div>\n\n\n\n<div class=\"wp-block-liquid-speech-balloon liquid-speech-balloon-wrap liquid-speech-balloon-09\"><div class=\"liquid-speech-balloon-avatar\"><\/div><div class=\"liquid-speech-balloon-text\"><p>Gelatin solidifies with only water, so I think you should mix it with something.<\/p><div class=\"liquid-speech-balloon-arrow\"><\/div><\/div><\/div>\n\n\n\n<div class=\"wp-block-liquid-speech-balloon liquid-speech-balloon-wrap liquid-speech-balloon-08 liquid-speech-balloon-right\"><div class=\"liquid-speech-balloon-avatar\"><\/div><div class=\"liquid-speech-balloon-text\"><p>For example?<\/p><div class=\"liquid-speech-balloon-arrow\"><\/div><\/div><\/div>\n\n\n\n<div class=\"wp-block-liquid-speech-balloon liquid-speech-balloon-wrap liquid-speech-balloon-09\"><div class=\"liquid-speech-balloon-avatar\"><\/div><div class=\"liquid-speech-balloon-text\"><p>PEO and PVA, which are easier to spin\u2026<br>Also, there\u2019s a method of dissolving gelatin in acetic acid instead of water.<\/p><div class=\"liquid-speech-balloon-arrow\"><\/div><\/div><\/div>\n\n\n\n<div class=\"wp-block-liquid-speech-balloon liquid-speech-balloon-wrap liquid-speech-balloon-07  liquid-speech-balloon-bubble liquid-speech-balloon-short\"><div class=\"liquid-speech-balloon-avatar\"><\/div><div class=\"liquid-speech-balloon-text\"><p>As expected, she is knowledgeble for spining!<\/p><div class=\"liquid-speech-balloon-arrow\"><\/div><\/div><\/div>\n\n\n\n<div style=\"height:32px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h4 class=\"wp-block-heading\">They received &nbsp;the advice and &nbsp;started&nbsp; making &nbsp;a solution again!<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">The three of them made their own gelatin solution with reference to the know-how taught by Ms. Nakatsuka.<\/p>\n\n\n\n<div class=\"wp-block-liquid-speech-balloon liquid-speech-balloon-wrap liquid-speech-balloon-06\"><div class=\"liquid-speech-balloon-avatar\"><\/div><div class=\"liquid-speech-balloon-text\"><p>Then I&#8217;m going to mix PEO in a 15wt% gelatin aqueous solution in a 3:7 ratio!<\/p><div class=\"liquid-speech-balloon-arrow\"><\/div><\/div><\/div>\n\n\n\n<div class=\"wp-block-liquid-speech-balloon liquid-speech-balloon-wrap liquid-speech-balloon-07\"><div class=\"liquid-speech-balloon-avatar\"><\/div><div class=\"liquid-speech-balloon-text\"><p>If it&#8217;s acetic acid, increasing the concentration of gelatin may work.<br>I think I&#8217;ll mix PVA in a 30wt% gelatin acetic acid solution in a 5:5 ratio!<\/p><div class=\"liquid-speech-balloon-arrow\"><\/div><\/div><\/div>\n\n\n\n<div class=\"wp-block-liquid-speech-balloon liquid-speech-balloon-wrap liquid-speech-balloon-08\"><div class=\"liquid-speech-balloon-avatar\"><\/div><div class=\"liquid-speech-balloon-text\"><p>I&#8217;ll try to put it all in! I&nbsp; will mix&nbsp; PVA and PEO in a 30wt% gelatin acetic acid aqueous solution in a 5:2.5:2.5 ratio\u266a<\/p><div class=\"liquid-speech-balloon-arrow\"><\/div><\/div><\/div>\n\n\n\n<ul class=\"wp-block-list has-pale-cyan-blue-background-color has-background\">\n<li style=\"font-style:normal;font-weight:600\">Gao: 15wt% gelatin aqueous solution: PEO 3:7<\/li>\n\n\n\n<li><strong>Masagaki: 30wt% gelatin acetic acid solution: PVA 5:5<\/strong><\/li>\n\n\n\n<li style=\"font-style:normal;font-weight:600\">Wang: 30wt% Gelatin Acetic Acid Aqueous Solution: PVA: PEO 5:2.5:2.5<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">They led &nbsp;these solutions sit overnight.<\/p>\n\n\n\n<div style=\"height:32px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h4 class=\"wp-block-heading\">The result of&nbsp; the solution of gelatin that we made<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">What happened to each gelatin solution &#8230;<br><\/p>\n\n\n\n<ul class=\"wp-block-list has-pale-cyan-blue-background-color has-background\">\n<li style=\"font-style:normal;font-weight:600\">Gao: 15wt% gelatin aqueous solution: PEO 3:7<br>\u21d2 turned solid<\/li>\n<\/ul>\n\n\n\n<ul class=\"wp-block-list has-pale-cyan-blue-background-color has-background\">\n<li style=\"font-style:normal;font-weight:600\">Masagaki: 30wt% gelatin acetic acid solution: PVA 5:5<br>\u21d2turned solid<\/li>\n<\/ul>\n\n\n\n<ul class=\"wp-block-list has-pale-cyan-blue-background-color has-background\">\n<li style=\"font-style:normal;font-weight:600\">Wang: 30wt% Gelatin Acetic Acid Aqueous Solution: PVA: PEO 5:2.5:2.5<br>\u21d2didn&#8217;t turn solid\u3002<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Even though they followed Mr. Nakatsuka&#8217;s advice and made the solution, two of our three solutions solidified again.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">So, they asked Ms. Nakatsuka for HELP again and &nbsp;received the following advice:<\/p>\n\n\n\n<ul class=\"wp-block-list has-pale-pink-background-color has-background\">\n<li style=\"font-style:normal;font-weight:600;text-decoration:underline\">Gao: 15wt% gelatin aqueous solution: PEO 3:7<br>\u21d2If you heat it and spin it while it is warm, it may work.<\/li>\n<\/ul>\n\n\n\n<ul class=\"wp-block-list has-pale-pink-background-color has-background\">\n<li style=\"font-style:normal;font-weight:600;text-decoration:underline\">Masagaki: 30wt% gelatin acetic acid solution: PVA 5:5<br>\u21d2Try lowering the concentration from 30 wt% to 20 wt%.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Finally they succeeded in making a gelatin solution<\/p>\n\n\n\n<div style=\"height:32px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h3 class=\"wp-block-heading\">Spinning experiment&nbsp; a gelatin solution using NANON<\/h3>\n\n\n\n<div class=\"wp-block-liquid-speech-balloon liquid-speech-balloon-wrap liquid-speech-balloon-09\"><div class=\"liquid-speech-balloon-avatar\"><\/div><div class=\"liquid-speech-balloon-text\" style=\"color:#000000\"><p>This time will be a short time spinning so let&#8217;s start with this parameter below using a tubeless spinnerette that can spin even a small amount of solution without waste!<br><strong>\u30fbVoltage: 15~20kV<br>\u30fbFR 1ml\/h<br>\u30fbSpinning distance: 150mm<br>\u30fbNEEDLE THICKNESS: 27G<\/strong><\/p><div class=\"liquid-speech-balloon-arrow\"><\/div><\/div><\/div>\n\n\n\n<p class=\"wp-block-paragraph\">Start spinning experiments!<\/p>\n\n\n\n<figure class=\"wp-block-gallery has-nested-images columns-default is-cropped wp-block-gallery-1 is-layout-flex wp-block-gallery-is-layout-flex\">\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" data-id=\"4332\" src=\"https:\/\/www.mecc-jp.com\/nano\/wp-content\/uploads\/2024\/08\/20c658540070b45dc99c41d30b1a7c8f.webp\" alt=\"\" class=\"wp-image-4332\"\/><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" data-id=\"4330\" src=\"https:\/\/www.mecc-jp.com\/nano\/wp-content\/uploads\/2024\/08\/697ce639f16f08c1ae5b178c4b6a77a8.webp\" alt=\"\" class=\"wp-image-4330\"\/><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" data-id=\"4331\" src=\"https:\/\/www.mecc-jp.com\/nano\/wp-content\/uploads\/2024\/08\/1f6c98113d3d88b0b432b9c77d97d44d.webp\" alt=\"\" class=\"wp-image-4331\"\/><\/figure>\n<figcaption class=\"blocks-gallery-caption wp-element-caption\">Gelatin solution spinning<\/figcaption><\/figure>\n\n\n\n<h4 class=\"wp-block-heading\">The spinning result of 15wt% gelatin aqueous solution: PEO<\/h4>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full is-resized\"><img decoding=\"async\" src=\"https:\/\/www.mecc-jp.com\/nano\/wp-content\/uploads\/2024\/08\/1.webp\" alt=\"\" class=\"wp-image-4323\" style=\"aspect-ratio:1;object-fit:cover;width:339px;height:auto\"\/><\/figure>\n<\/div>\n\n\n<div style=\"height:21px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p class=\"has-text-align-center has-small-font-size wp-block-paragraph\">\uff3c 15wt% gelatin aqueous solution: PEO 3:7 \uff0f<\/p>\n\n\n<div class=\"wp-block-image is-style-rounded\">\n<figure class=\"aligncenter size-full is-resized\"><img decoding=\"async\" src=\"https:\/\/www.mecc-jp.com\/nano\/wp-content\/uploads\/2024\/08\/0bd2f3d4f09398c8fb434acf9c307663-edited.jpg\" alt=\"\" class=\"wp-image-4334\" style=\"aspect-ratio:1;object-fit:cover;width:323px;height:auto\"\/><\/figure>\n<\/div>\n\n\n<div style=\"height:35px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<ul class=\"wp-block-list has-white-color has-vivid-cyan-blue-background-color has-text-color has-background has-link-color wp-elements-2\">\n<li>Spinning can be done in the range of voltage 12~26kV.<\/li>\n\n\n\n<li>When lowered to 11 kV, droplets drip<\/li>\n\n\n\n<li>When raised to 27 kV, the jet does not come out<\/li>\n<\/ul>\n\n\n\n<div class=\"wp-block-liquid-speech-balloon liquid-speech-balloon-wrap liquid-speech-balloon-06\"><div class=\"liquid-speech-balloon-avatar\"><\/div><div class=\"liquid-speech-balloon-text\"><p>I thought it would cool down and turned solied &nbsp;in about 10 minutes and stop spinning, but It was able to be spinning&nbsp; for almost 30 minutes!<\/p><div class=\"liquid-speech-balloon-arrow\"><\/div><\/div><\/div>\n\n\n\n<figure class=\"wp-block-gallery aligncenter has-nested-images columns-default is-cropped wp-block-gallery-2 is-layout-flex wp-block-gallery-is-layout-flex\">\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" data-id=\"4335\" src=\"https:\/\/www.mecc-jp.com\/nano\/wp-content\/uploads\/2024\/08\/8de17ab9096c093a0c9b525ba9f069c1.webp\" alt=\"\" class=\"wp-image-4335\"\/><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" data-id=\"4336\" src=\"https:\/\/www.mecc-jp.com\/nano\/wp-content\/uploads\/2024\/08\/06bb05c81fc6a23d00350013ed69d652.webp\" alt=\"\" class=\"wp-image-4336\"\/><\/figure>\n<figcaption class=\"blocks-gallery-caption wp-element-caption\">15wt% gelatin aqueous solution: PEO 3:7 spun at 18 kV<\/figcaption><\/figure>\n\n\n\n<figure class=\"wp-block-gallery aligncenter has-nested-images columns-default is-cropped wp-block-gallery-3 is-layout-flex wp-block-gallery-is-layout-flex\">\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" data-id=\"4337\" src=\"https:\/\/www.mecc-jp.com\/nano\/wp-content\/uploads\/2024\/08\/10b8604ae80fe6911e5511ac9fffb8b8.webp\" alt=\"\" class=\"wp-image-4337\"\/><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" data-id=\"4338\" src=\"https:\/\/www.mecc-jp.com\/nano\/wp-content\/uploads\/2024\/08\/bd8188db40aed246038fcb13397bdde0.webp\" alt=\"\" class=\"wp-image-4338\"\/><\/figure>\n<figcaption class=\"blocks-gallery-caption wp-element-caption\">15wt% gelatin aqueous solution: PEO 3:7 spun at 25 kV<\/figcaption><\/figure>\n\n\n\n<div style=\"height:21px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h5 class=\"wp-block-heading\">20wt% gelatin acetate solution: fiber diameter of PVA<\/h5>\n\n\n\n<div style=\"height:21px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<ul class=\"wp-block-list has-white-color has-vivid-cyan-blue-background-color has-text-color has-background has-link-color wp-elements-3\">\n<li>Spinning at 18kV: 398.1615nm<\/li>\n\n\n\n<li>Spinning at 25kV: 462.82nm<\/li>\n<\/ul>\n\n\n\n<div style=\"height:21px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<div class=\"wp-block-liquid-speech-balloon liquid-speech-balloon-wrap liquid-speech-balloon-06\"><div class=\"liquid-speech-balloon-avatar\"><\/div><div class=\"liquid-speech-balloon-text\"><p>When the voltage was increased, uniform fibers could be spun.<br>Even if it turned solied, it was possible to spin it without using organic solvents by heating it, so the range of applications for gelatin in the medical and beauty fields seems to be expanding!<\/p><div class=\"liquid-speech-balloon-arrow\"><\/div><\/div><\/div>\n\n\n\n<div style=\"height:35px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h4 class=\"wp-block-heading\">Spinning results of 20wt% gelatin acetic acid solution: PVA<\/h4>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full is-resized\"><img decoding=\"async\" src=\"https:\/\/www.mecc-jp.com\/nano\/wp-content\/uploads\/2024\/08\/3.webp\" alt=\"\" class=\"wp-image-4324\" style=\"aspect-ratio:1;object-fit:cover;width:339px;height:auto\"\/><\/figure>\n<\/div>\n\n\n<div style=\"height:21px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p class=\"has-text-align-center has-small-font-size wp-block-paragraph\">\uff3c 20wt% gelatin acetic acid solution: PVA \uff0f<\/p>\n\n\n<div class=\"wp-block-image is-style-rounded\">\n<figure class=\"aligncenter size-full is-resized\"><img decoding=\"async\" src=\"https:\/\/www.mecc-jp.com\/nano\/wp-content\/uploads\/2024\/08\/aed4f4c40ae669a4325930def6b95968.jpg\" alt=\"\" class=\"wp-image-4344\" style=\"aspect-ratio:1;object-fit:cover;width:323px;height:auto\"\/><\/figure>\n<\/div>\n\n\n<div style=\"height:35px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<ul class=\"wp-block-list has-white-color has-vivid-cyan-blue-background-color has-text-color has-background has-link-color wp-elements-4\">\n<li>Spinning can be done in the range of voltage 15kV~30kV<\/li>\n\n\n\n<li>When lowered to 10 kV, droplets drip<\/li>\n\n\n\n<li>When I started at 15 kV and went up to 20 kV, the jet was not stable.<\/li>\n<\/ul>\n\n\n\n<div style=\"height:21px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<div class=\"wp-block-liquid-speech-balloon liquid-speech-balloon-wrap liquid-speech-balloon-07\"><div class=\"liquid-speech-balloon-avatar\"><\/div><div class=\"liquid-speech-balloon-text\"><p>When the voltage was lowered until a droplet appeared and the voltage was raised again, and the jet became stable at 23 kV. After that, we were able to confirm that it can spin up to 30 kV.<\/p><div class=\"liquid-speech-balloon-arrow\"><\/div><\/div><\/div>\n\n\n\n<div style=\"height:21px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<figure class=\"wp-block-gallery aligncenter has-nested-images columns-default is-cropped wp-block-gallery-4 is-layout-flex wp-block-gallery-is-layout-flex\">\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" data-id=\"4345\" src=\"https:\/\/www.mecc-jp.com\/nano\/wp-content\/uploads\/2024\/08\/d6088981f9f761028001fb0dc087c0c9.webp\" alt=\"\" class=\"wp-image-4345\"\/><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" data-id=\"4346\" src=\"https:\/\/www.mecc-jp.com\/nano\/wp-content\/uploads\/2024\/08\/feec12d59fcc85fb7f82929ff066eb5b.webp\" alt=\"\" class=\"wp-image-4346\"\/><\/figure>\n<figcaption class=\"blocks-gallery-caption wp-element-caption\">20wt% gelatin acetic acid solution: PVA 5:5 at the end of the spun circle<\/figcaption><\/figure>\n\n\n\n<figure class=\"wp-block-gallery aligncenter has-nested-images columns-default is-cropped wp-block-gallery-5 is-layout-flex wp-block-gallery-is-layout-flex\">\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" data-id=\"4347\" src=\"https:\/\/www.mecc-jp.com\/nano\/wp-content\/uploads\/2024\/08\/2eb90a905ee6ec93924c6f0905361002.webp\" alt=\"\" class=\"wp-image-4347\"\/><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" data-id=\"4348\" src=\"https:\/\/www.mecc-jp.com\/nano\/wp-content\/uploads\/2024\/08\/5098b8d54b3111eba697131ef0c13e96.webp\" alt=\"\" class=\"wp-image-4348\"\/><\/figure>\n<figcaption class=\"blocks-gallery-caption wp-element-caption\">20wt% gelatin acetic acid solution: PVA 5:5 in the middle of the spun circle\u592e<\/figcaption><\/figure>\n\n\n\n<div style=\"height:32px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h5 class=\"wp-block-heading\">20wt% gelatin acetate solution: fiber diameter of PVA<\/h5>\n\n\n\n<ul class=\"wp-block-list has-white-color has-vivid-cyan-blue-background-color has-text-color has-background has-link-color wp-elements-5\">\n<li>Spinning circle end: 111.3563nm<\/li>\n\n\n\n<li>Median spinning circle: 100.3597nm<\/li>\n<\/ul>\n\n\n\n<div style=\"height:21px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<div class=\"wp-block-liquid-speech-balloon liquid-speech-balloon-wrap liquid-speech-balloon-07\"><div class=\"liquid-speech-balloon-avatar\"><\/div><div class=\"liquid-speech-balloon-text\"><p>There are many beads in the center of the spinning circle, and the fiber diameter is thinner than the nanofibers of the other two!<\/p><div class=\"liquid-speech-balloon-arrow\"><\/div><\/div><\/div>\n\n\n\n<div class=\"wp-block-liquid-speech-balloon liquid-speech-balloon-wrap liquid-speech-balloon-09 liquid-speech-balloon-right\"><div class=\"liquid-speech-balloon-avatar\"><\/div><div class=\"liquid-speech-balloon-text\"><p>The center of the spinning circle is so dark and wet that you can see it visually, so it may be improved by spinning while moving it sideways instead of spinning at one point.<\/p><div class=\"liquid-speech-balloon-arrow\"><\/div><\/div><\/div>\n\n\n\n<div style=\"height:37px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h4 class=\"wp-block-heading\">Spinning result of 30wt% gelatin acetic acid aqueous solution: PVA:PEO<\/h4>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full is-resized\"><img decoding=\"async\" src=\"https:\/\/www.mecc-jp.com\/nano\/wp-content\/uploads\/2024\/08\/2.webp\" alt=\"\" class=\"wp-image-4325\" style=\"aspect-ratio:1;object-fit:cover;width:339px;height:auto\"\/><\/figure>\n<\/div>\n\n\n<div style=\"height:21px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p class=\"has-text-align-center has-small-font-size wp-block-paragraph\">\uff3c 30wt% gelatin acetic acid aqueous solution: PVA: PEO\uff0f<\/p>\n\n\n<div class=\"wp-block-image is-style-rounded\">\n<figure class=\"aligncenter size-full is-resized\"><img decoding=\"async\" src=\"https:\/\/www.mecc-jp.com\/nano\/wp-content\/uploads\/2024\/08\/b7995dd28cca6d2c14328d5408f79b2a.jpg\" alt=\"\" class=\"wp-image-4339\" style=\"aspect-ratio:1;object-fit:cover;width:323px\"\/><\/figure>\n<\/div>\n\n\n<div style=\"height:35px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<ul class=\"wp-block-list has-white-color has-vivid-cyan-blue-background-color has-text-color has-background has-link-color wp-elements-6\">\n<li>Spinning voltage up to 12~30kV<\/li>\n\n\n\n<li>When lowered to 11 kV, droplets drip<\/li>\n<\/ul>\n\n\n\n<div style=\"height:21px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<div class=\"wp-block-liquid-speech-balloon liquid-speech-balloon-wrap liquid-speech-balloon-08\"><div class=\"liquid-speech-balloon-avatar\"><\/div><div class=\"liquid-speech-balloon-text\"><p>I feel that fibers spun in the range of 18kV ~ 25kV and fibers spun in the range of 25kV ~ 30kV look different in terms of gloss. Maybe the fibers have changed!<\/p><div class=\"liquid-speech-balloon-arrow\"><\/div><\/div><\/div>\n\n\n\n<div style=\"height:21px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<figure class=\"wp-block-gallery aligncenter has-nested-images columns-default is-cropped wp-block-gallery-6 is-layout-flex wp-block-gallery-is-layout-flex\">\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" data-id=\"4340\" src=\"https:\/\/www.mecc-jp.com\/nano\/wp-content\/uploads\/2024\/08\/da51849cc91bc02b934c9df4b6157b53.webp\" alt=\"\" class=\"wp-image-4340\"\/><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" data-id=\"4341\" src=\"https:\/\/www.mecc-jp.com\/nano\/wp-content\/uploads\/2024\/08\/4a370df6c2ffd1a37423ec78adad5694.webp\" alt=\"\" class=\"wp-image-4341\"\/><\/figure>\n<figcaption class=\"blocks-gallery-caption wp-element-caption\">30wt% gelatin acetic acid aqueous solution: PVA:PEO 5:2.5:2.5 spun at 12 kV<\/figcaption><\/figure>\n\n\n\n<figure class=\"wp-block-gallery aligncenter has-nested-images columns-default is-cropped wp-block-gallery-7 is-layout-flex wp-block-gallery-is-layout-flex\">\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" data-id=\"4342\" src=\"https:\/\/www.mecc-jp.com\/nano\/wp-content\/uploads\/2024\/08\/e7eee0d879a27e7fee13cf82de16b2be.jpg\" alt=\"\" class=\"wp-image-4342\"\/><\/figure>\n\n\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" data-id=\"4343\" src=\"https:\/\/www.mecc-jp.com\/nano\/wp-content\/uploads\/2024\/08\/bd8188db40aed246038fcb13397bdde0-1.webp\" alt=\"\" class=\"wp-image-4343\"\/><\/figure>\n<figcaption class=\"blocks-gallery-caption wp-element-caption\">30wt% gelatin acetic acid aqueous solution: PVA:PEO 5:2.5:2.5 spun at 25~30kV<\/figcaption><\/figure>\n\n\n\n<div style=\"height:31px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h5 class=\"wp-block-heading\">30wt% Gelatin Acetic Acid Aqueous Solution: PVA:PEO Fiber Diameter<\/h5>\n\n\n\n<ul class=\"wp-block-list has-white-color has-vivid-cyan-blue-background-color has-text-color has-background has-link-color wp-elements-7\">\n<li>Spinning at 12kV: 610.75nm<\/li>\n\n\n\n<li>Spinning at 25~30kV: 375.516nm<\/li>\n<\/ul>\n\n\n\n<div style=\"height:21px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<div class=\"wp-block-liquid-speech-balloon liquid-speech-balloon-wrap liquid-speech-balloon-08\"><div class=\"liquid-speech-balloon-avatar\"><\/div><div class=\"liquid-speech-balloon-text\"><p>Compared to those spun with other solutions, the fiber diameter is thicker! When the voltage was high, the fibers became thinner, but the fibers were no longer uniform. When the voltage was low, the fiber diameter became thicker and more uniform.<\/p><div class=\"liquid-speech-balloon-arrow\"><\/div><\/div><\/div>\n\n\n\n<div style=\"height:35px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h3 class=\"wp-block-heading has-light-green-cyan-background-color has-background\">In order to produce nanofibers successfully by spinning a gelatin solution,<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">What did you think of the first HELP project?<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Gelatin with a concentration of 15 wt%~30 wt% was successfully with different approaches.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\" style=\"text-decoration:underline\">What we learned to spin gelatin, which tends to solidified easily<\/p>\n\n\n\n<ul class=\"wp-block-list has-vivid-cyan-blue-color has-text-color has-link-color wp-elements-8\">\n<li class=\"has-medium-font-size\"><strong>When the solution solidified, try heating it.<\/strong><\/li>\n\n\n\n<li><strong>Mix easy-to-spin materials such as PEO and PVA<\/strong><\/li>\n\n\n\n<li class=\"has-medium-font-size\"><strong>Reducing the concentration of gelatin<\/strong><\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Tell us! HELP\uff01<\/h3>\n\n\n\n<figure class=\"wp-block-gallery has-nested-images columns-default is-cropped wp-block-gallery-8 is-layout-flex wp-block-gallery-is-layout-flex\">\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" data-id=\"4358\" src=\"https:\/\/www.mecc-jp.com\/nano\/wp-content\/uploads\/2024\/08\/deb74c153a488f8782633160a6f21c07-edited.png\" alt=\"\" class=\"wp-image-4358\"\/><\/figure>\n\n\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" data-id=\"4357\" src=\"https:\/\/www.mecc-jp.com\/nano\/wp-content\/uploads\/2024\/08\/b21b9cb75457b68dccd17b813fd6cfe3.png\" alt=\"\" class=\"wp-image-4357\"\/><\/figure>\n<figcaption class=\"blocks-gallery-caption wp-element-caption\">Let&#8217;s make the HELP project a success<\/figcaption><\/figure>\n\n\n\n<div style=\"height:29px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<div class=\"wp-block-liquid-speech-balloon liquid-speech-balloon-wrap liquid-speech-balloon-06\"><div class=\"liquid-speech-balloon-avatar\"><\/div><div class=\"liquid-speech-balloon-text\"><p>When the gelatin was spun, the jet seemed to be stable, but droplets sometimes dripped along the way. I wonder why.<\/p><div class=\"liquid-speech-balloon-arrow\"><\/div><\/div><\/div>\n\n\n\n<div class=\"wp-block-liquid-speech-balloon liquid-speech-balloon-wrap liquid-speech-balloon-07\"><div class=\"liquid-speech-balloon-avatar\"><\/div><div class=\"liquid-speech-balloon-text\"><p>I wonder if there is a way to spin gelatin alone\u3002<\/p><div class=\"liquid-speech-balloon-arrow\"><\/div><\/div><\/div>\n\n\n\n<div class=\"wp-block-liquid-speech-balloon liquid-speech-balloon-wrap liquid-speech-balloon-08\"><div class=\"liquid-speech-balloon-avatar\"><\/div><div class=\"liquid-speech-balloon-text\"><p>How can you spin it well?<br>If you have any advice, please let us know. HELP\uff01<\/p><div class=\"liquid-speech-balloon-arrow\"><\/div><\/div><\/div>\n\n\n\n<div style=\"height:29px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<div class=\"wp-block-buttons is-content-justification-center is-layout-flex wp-container-core-buttons-is-layout-fe48e5de wp-block-buttons-is-layout-flex\">\n<div class=\"wp-block-button has-custom-width wp-block-button__width-100\"><a class=\"wp-block-button__link has-vivid-cyan-blue-background-color has-background wp-element-button\" href=\"https:\/\/mecc-jp.com\/nano\/contact\/\" style=\"border-radius:24px\" target=\"_blank\" rel=\"noreferrer noopener\">Please let us know through our contact form!<\/a><\/div>\n<\/div>\n\n\n\n<div style=\"height:57px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p class=\"wp-block-paragraph\"><a href=\"https:\/\/mecc-jp.com\/nano\/latest-news\/12897\/\">>><strong> HELP Vol.02<\/strong> <strong>&#8220;Let\u2019s Create Samples of Artificial Blood Vessels and Stent Covers for the Exhibition in China!&#8221;<\/strong><\/a><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n","protected":false},"excerpt":{"rendered":"<p>The launch of \u2018HELP\u2019 has finally begun! In the first session, we conducted an experiment on how to effectively spin \u2018gelatin,\u2019 which tends to solidify easily. &gt;&gt;What is &#8220;HELP&#8221;? Members who participated in this \u2018HELP\u2019 experiment: Gao<a href=\"https:\/\/mecc-jp.com\/nano\/latest-news\/13190\/\" class=\"excerpt_link\">\u226b more<\/a><\/p>\n","protected":false},"author":4,"featured_media":12903,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[2],"tags":[],"class_list":["post-13190","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-latest-news"],"_links":{"self":[{"href":"https:\/\/mecc-jp.com\/nano\/wp-json\/wp\/v2\/posts\/13190","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/mecc-jp.com\/nano\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/mecc-jp.com\/nano\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/mecc-jp.com\/nano\/wp-json\/wp\/v2\/users\/4"}],"replies":[{"embeddable":true,"href":"https:\/\/mecc-jp.com\/nano\/wp-json\/wp\/v2\/comments?post=13190"}],"version-history":[{"count":7,"href":"https:\/\/mecc-jp.com\/nano\/wp-json\/wp\/v2\/posts\/13190\/revisions"}],"predecessor-version":[{"id":13328,"href":"https:\/\/mecc-jp.com\/nano\/wp-json\/wp\/v2\/posts\/13190\/revisions\/13328"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/mecc-jp.com\/nano\/wp-json\/wp\/v2\/media\/12903"}],"wp:attachment":[{"href":"https:\/\/mecc-jp.com\/nano\/wp-json\/wp\/v2\/media?parent=13190"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/mecc-jp.com\/nano\/wp-json\/wp\/v2\/categories?post=13190"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/mecc-jp.com\/nano\/wp-json\/wp\/v2\/tags?post=13190"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}