{"id":56681,"date":"2024-11-09T00:53:48","date_gmt":"2024-11-09T05:53:48","guid":{"rendered":"https:\/\/www.bjultrasonic.com\/ultrasonic-homogenizers-a-powerful-tool-for-particle-dispersion\/"},"modified":"2025-01-27T06:15:41","modified_gmt":"2025-01-27T11:15:41","slug":"ultrasonic-homogenizers-a-powerful-tool-for-particle-dispersion","status":"publish","type":"post","link":"https:\/\/www.bjultrasonic.com\/cs\/ultrasonic-homogenizers-a-powerful-tool-for-particle-dispersion\/","title":{"rendered":"Ultrazvukov\u00e9 homogeniz\u00e1tory: Kl\u00ed\u010d k disperzi \u010d\u00e1stic"},"content":{"rendered":"<p>Ultrazvukov\u00e9 homogeniz\u00e1tory se staly v posledn\u00edch letech nezbytn\u00fdm n\u00e1strojem v mnoha oblastech v\u011bdy a pr\u016fmyslu, zejm\u00e9na d\u00edky jejich efektivit\u011b p\u0159i dispergov\u00e1n\u00ed \u010d\u00e1stic.  D\u00edky principu ultrazvuku dok\u00e1\u017e\u00ed tyto p\u0159\u00edstroje dos\u00e1hnout v\u00fdsledk\u016f, kter\u00e9 jsou t\u011b\u017eko dosa\u017eiteln\u00e9 jin\u00fdmi metodami.  Tento \u010dl\u00e1nek se zam\u011b\u0159\u00ed na vysv\u011btlen\u00ed principu jejich fungov\u00e1n\u00ed a na jejich \u0161irok\u00e9 uplatn\u011bn\u00ed v dispergov\u00e1n\u00ed \u010d\u00e1stic r\u016fzn\u00e9 velikosti a vlastnost\u00ed.<\/p>\n<h3>Princip fungov\u00e1n\u00ed ultrazvukov\u00fdch homogeniz\u00e1tor\u016f<\/h3>\n<p>Ultrazvukov\u00e9 homogeniz\u00e1tory vyu\u017e\u00edvaj\u00ed vysoko-frekven\u010dn\u00ed ultrazvukov\u00e9 vlny k rozb\u00edjen\u00ed agreg\u00e1t\u016f a aglomer\u00e1t\u016f \u010d\u00e1stic v kapalin\u011b.  Tyto vlny generuj\u00ed kavita\u010dn\u00ed bubliny, kter\u00e9 p\u0159i implozi uvol\u0148uj\u00ed enormn\u00ed energii.  Tato energie pak vede k rozru\u0161en\u00ed \u010d\u00e1stic a jejich rovnom\u011brn\u00e9mu rozpt\u00fdlen\u00ed v roztoku.  Intenzita a frekvence ultrazvuku, stejn\u011b jako vlastnosti zpracov\u00e1van\u00e9 l\u00e1tky (viskozita, povrchov\u00e9 nap\u011bt\u00ed), ovliv\u0148uj\u00ed \u00fa\u010dinnost homogenizace.  Existuj\u00ed r\u016fzn\u00e9 typy ultrazvukov\u00fdch homogeniz\u00e1tor\u016f, li\u0161\u00edc\u00ed se v\u00fdkonem, typem sondy a dal\u0161\u00edmi parametry.  V\u00fdb\u011br vhodn\u00e9ho p\u0159\u00edstroje z\u00e1vis\u00ed na konkr\u00e9tn\u00edch po\u017eadavc\u00edch aplikace.<\/p>\n<h3>Aplikace ultrazvukov\u00fdch homogeniz\u00e1tor\u016f v dispergov\u00e1n\u00ed \u010d\u00e1stic<\/h3>\n<p>Ultrazvukov\u00e9 homogeniz\u00e1tory nach\u00e1zej\u00ed \u0161irok\u00e9 uplatn\u011bn\u00ed v mnoha oblastech, kde je nutn\u00e9 dos\u00e1hnout dokonal\u00e9 disperze \u010d\u00e1stic.  Mezi nejv\u00fdznamn\u011bj\u0161\u00ed pat\u0159\u00ed:<\/p>\n<ul>\n<li><strong>Nanotechnologie:<\/strong> P\u0159\u00edprava nano\u010d\u00e1stic a jejich disperze v r\u016fzn\u00fdch m\u00e9di\u00edch.<\/li>\n<li><strong>Farmaceutick\u00fd pr\u016fmysl:<\/strong> P\u0159\u00edprava l\u00e9kov\u00fdch forem, disperze l\u00e9\u010div\u00fdch l\u00e1tek.<\/li>\n<li><strong>Potravin\u00e1\u0159sk\u00fd pr\u016fmysl:<\/strong> Emulgov\u00e1n\u00ed, homogenizace potravin, p\u0159\u00edprava nano-potravin.<\/li>\n<li><strong>Kosmetick\u00fd pr\u016fmysl:<\/strong> P\u0159\u00edprava emulz\u00ed, disperze pigment\u016f a dal\u0161\u00edch slo\u017eek.<\/li>\n<li><strong>Materi\u00e1lov\u00fd v\u00fdzkum:<\/strong> P\u0159\u00edprava kompozitn\u00edch materi\u00e1l\u016f, disperze nano-plniva.<\/li>\n<\/ul>\n<h3>Parametry ovliv\u0148uj\u00edc\u00ed \u00fa\u010dinnost disperze<\/h3>\n<p>\u00da\u010dinnost disperze \u010d\u00e1stic pomoc\u00ed ultrazvukov\u00fdch homogeniz\u00e1tor\u016f z\u00e1vis\u00ed na n\u011bkolika faktorech.  Mezi nejd\u016fle\u017eit\u011bj\u0161\u00ed pat\u0159\u00ed:<\/p>\n<table class=\"table table-striped table-bordered\">\n<thead>\n<tr>\n<th>Faktor<\/th>\n<th>Vliv na \u00fa\u010dinnost disperze<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Frekvence ultrazvuku<\/td>\n<td>Vy\u0161\u0161\u00ed frekvence obecn\u011b vede k jemn\u011bj\u0161\u00ed disperzi<\/td>\n<\/tr>\n<tr>\n<td>Amplituta ultrazvuku<\/td>\n<td>Vy\u0161\u0161\u00ed amplituda vede k v\u011bt\u0161\u00ed energii, ale m\u016f\u017ee i k po\u0161kozen\u00ed \u010d\u00e1stic<\/td>\n<\/tr>\n<tr>\n<td>Doba homogenizace<\/td>\n<td>Dlouhodob\u011bj\u0161\u00ed homogenizace zlep\u0161uje disperzi<\/td>\n<\/tr>\n<tr>\n<td>Viskozita kapaliny<\/td>\n<td>Vy\u0161\u0161\u00ed viskozita sni\u017euje \u00fa\u010dinnost disperze<\/td>\n<\/tr>\n<tr>\n<td>Povrchov\u00e9 nap\u011bt\u00ed kapaliny<\/td>\n<td>Ni\u017e\u0161\u00ed povrchov\u00e9 nap\u011bt\u00ed zlep\u0161uje disperzi<\/td>\n<\/tr>\n<tr>\n<td>Velikost a tvar \u010d\u00e1stic<\/td>\n<td>Vliv na obt\u00ed\u017enost disperze<\/td>\n<\/tr>\n<tr>\n<td>Koncentrace \u010d\u00e1stic<\/td>\n<td>P\u0159\u00edli\u0161 vysok\u00e1 koncentrace m\u016f\u017ee br\u00e1nit disperzi<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h3>Srovn\u00e1n\u00ed s jin\u00fdmi metodami disperze<\/h3>\n<p>Ultrazvukov\u00e9 homogeniz\u00e1tory nab\u00edz\u00ed oproti jin\u00fdm metod\u00e1m disperze (nap\u0159. m\u00edcha\u010dky, vysokotlak\u00e9 homogeniz\u00e1tory) \u0159adu v\u00fdhod.  Nab\u00edzej\u00ed efektivn\u011bj\u0161\u00ed disperzi, zvl\u00e1\u0161t\u011b pro jemn\u00e9 \u010d\u00e1stice, a umo\u017e\u0148uj\u00ed zpracov\u00e1n\u00ed men\u0161\u00edch objem\u016f vzorku.  Nicm\u00e9n\u011b, jejich pou\u017eit\u00ed m\u016f\u017ee b\u00fdt omezen\u00e9 pro n\u011bkter\u00e9 vysoce visk\u00f3zn\u00ed materi\u00e1ly.  Volba vhodn\u00e9 metody z\u00e1vis\u00ed na konkr\u00e9tn\u00edch po\u017eadavc\u00edch dan\u00e9 aplikace.<\/p>\n<p>Ultrazvukov\u00e9 homogeniz\u00e1tory p\u0159edstavuj\u00ed efektivn\u00ed a univerz\u00e1ln\u00ed n\u00e1stroj pro dispergov\u00e1n\u00ed \u010d\u00e1stic v \u0161irok\u00e9 \u0161k\u00e1le aplikac\u00ed.  D\u00edky sv\u00e9 flexibilit\u011b a efektivit\u011b se st\u00e1vaj\u00ed st\u00e1le d\u016fle\u017eit\u011bj\u0161\u00ed sou\u010d\u00e1st\u00ed mnoha pr\u016fmyslov\u00fdch a v\u00fdzkumn\u00fdch proces\u016f.  Pochopen\u00ed principu jejich fungov\u00e1n\u00ed a faktor\u016f ovliv\u0148uj\u00edc\u00edch \u00fa\u010dinnost disperze je kl\u00ed\u010dov\u00e9 pro optim\u00e1ln\u00ed vyu\u017eit\u00ed t\u011bchto p\u0159\u00edstroj\u016f.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Ultrazvukov\u00e9 homogeniz\u00e1tory se staly v posledn\u00edch letech nezbytn\u00fdm n\u00e1strojem v mnoha oblastech v\u011bdy a pr\u016fmyslu, zejm\u00e9na d\u00edky jejich efektivit\u011b p\u0159i dispergov\u00e1n\u00ed \u010d\u00e1stic. D\u00edky principu ultrazvuku dok\u00e1\u017e\u00ed tyto p\u0159\u00edstroje dos\u00e1hnout v\u00fdsledk\u016f, kter\u00e9 jsou t\u011b\u017eko dosa\u017eiteln\u00e9 jin\u00fdmi metodami. Tento \u010dl\u00e1nek se zam\u011b\u0159\u00ed na vysv\u011btlen\u00ed principu jejich fungov\u00e1n\u00ed a na jejich \u0161irok\u00e9 uplatn\u011bn\u00ed v dispergov\u00e1n\u00ed \u010d\u00e1stic r\u016fzn\u00e9 velikosti<\/p>\n","protected":false},"author":1,"featured_media":42277,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[6415],"tags":[],"class_list":["post-56681","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog","prodpage-classic"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/www.bjultrasonic.com\/cs\/wp-json\/wp\/v2\/posts\/56681","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.bjultrasonic.com\/cs\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.bjultrasonic.com\/cs\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.bjultrasonic.com\/cs\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.bjultrasonic.com\/cs\/wp-json\/wp\/v2\/comments?post=56681"}],"version-history":[{"count":0,"href":"https:\/\/www.bjultrasonic.com\/cs\/wp-json\/wp\/v2\/posts\/56681\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.bjultrasonic.com\/cs\/wp-json\/wp\/v2\/media\/42277"}],"wp:attachment":[{"href":"https:\/\/www.bjultrasonic.com\/cs\/wp-json\/wp\/v2\/media?parent=56681"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.bjultrasonic.com\/cs\/wp-json\/wp\/v2\/categories?post=56681"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.bjultrasonic.com\/cs\/wp-json\/wp\/v2\/tags?post=56681"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}