{"id":67,"date":"2012-03-14T16:12:55","date_gmt":"2012-03-14T14:12:55","guid":{"rendered":"http:\/\/www.web.fs.uni-lj.si\/cem\/?page_id=67"},"modified":"2023-05-15T09:06:42","modified_gmt":"2023-05-15T08:06:42","slug":"rheological-characterization","status":"publish","type":"page","link":"https:\/\/web.fs.uni-lj.si\/cem\/?page_id=67&lang=en","title":{"rendered":"Rheological characterization"},"content":{"rendered":"<p style=\"text-align: center;\"><strong>RHEOLOGICAL CHARACTERIZATION<\/strong><\/p>\n<div id=\"wrapper\">\n<div class=\"firefox_white\" style=\"float: left; width: 52%;\">\n\n\t\t<style type=\"text\/css\">\n\t\t\t#gallery-1 {\n\t\t\t\tmargin: auto;\n\t\t\t}\n\t\t\t#gallery-1 .gallery-item {\n\t\t\t\tfloat: left;\n\t\t\t\tmargin-top: 10px;\n\t\t\t\ttext-align: center;\n\t\t\t\twidth: 50%;\n\t\t\t}\n\t\t\t#gallery-1 img {\n\t\t\t\tborder: 2px solid #cfcfcf;\n\t\t\t}\n\t\t\t#gallery-1 .gallery-caption {\n\t\t\t\tmargin-left: 0;\n\t\t\t}\n\t\t\t\/* see gallery_shortcode() in wp-includes\/media.php *\/\n\t\t<\/style>\n\t\t<div id='gallery-1' class='gallery galleryid-67 gallery-columns-2 gallery-size-thumbnail'><dl class='gallery-item'>\n\t\t\t<dt class='gallery-icon landscape'>\n\t\t\t\t<a href='https:\/\/web.fs.uni-lj.si\/cem\/wp-content\/uploads\/2012\/04\/Rheology-1-MARS-rheometer-and-refrigerated-circulator.png'><img loading=\"lazy\" decoding=\"async\" width=\"200\" height=\"142\" src=\"https:\/\/web.fs.uni-lj.si\/cem\/wp-content\/uploads\/2012\/04\/Rheology-1-MARS-rheometer-and-refrigerated-circulator-200x142.png\" class=\"attachment-thumbnail size-thumbnail\" alt=\"\" aria-describedby=\"gallery-1-865\" srcset=\"https:\/\/web.fs.uni-lj.si\/cem\/wp-content\/uploads\/2012\/04\/Rheology-1-MARS-rheometer-and-refrigerated-circulator-200x142.png 200w, https:\/\/web.fs.uni-lj.si\/cem\/wp-content\/uploads\/2012\/04\/Rheology-1-MARS-rheometer-and-refrigerated-circulator-300x214.png 300w, https:\/\/web.fs.uni-lj.si\/cem\/wp-content\/uploads\/2012\/04\/Rheology-1-MARS-rheometer-and-refrigerated-circulator-420x300.png 420w, https:\/\/web.fs.uni-lj.si\/cem\/wp-content\/uploads\/2012\/04\/Rheology-1-MARS-rheometer-and-refrigerated-circulator.png 776w\" sizes=\"(max-width: 200px) 100vw, 200px\" \/><\/a>\n\t\t\t<\/dt>\n\t\t\t\t<dd class='wp-caption-text gallery-caption' id='gallery-1-865'>\n\t\t\t\tMARS rheometer and refrigerated circulator\n\t\t\t\t<\/dd><\/dl><dl class='gallery-item'>\n\t\t\t<dt class='gallery-icon landscape'>\n\t\t\t\t<a href='https:\/\/web.fs.uni-lj.si\/cem\/wp-content\/uploads\/2012\/04\/Rheology-2-MARS-rheometer.png'><img loading=\"lazy\" decoding=\"async\" width=\"200\" height=\"142\" src=\"https:\/\/web.fs.uni-lj.si\/cem\/wp-content\/uploads\/2012\/04\/Rheology-2-MARS-rheometer-200x142.png\" class=\"attachment-thumbnail size-thumbnail\" alt=\"\" aria-describedby=\"gallery-1-866\" srcset=\"https:\/\/web.fs.uni-lj.si\/cem\/wp-content\/uploads\/2012\/04\/Rheology-2-MARS-rheometer-200x142.png 200w, https:\/\/web.fs.uni-lj.si\/cem\/wp-content\/uploads\/2012\/04\/Rheology-2-MARS-rheometer-300x214.png 300w, https:\/\/web.fs.uni-lj.si\/cem\/wp-content\/uploads\/2012\/04\/Rheology-2-MARS-rheometer-420x300.png 420w, https:\/\/web.fs.uni-lj.si\/cem\/wp-content\/uploads\/2012\/04\/Rheology-2-MARS-rheometer.png 776w\" sizes=\"(max-width: 200px) 100vw, 200px\" \/><\/a>\n\t\t\t<\/dt>\n\t\t\t\t<dd class='wp-caption-text gallery-caption' id='gallery-1-866'>\n\t\t\t\tMARS rheometer\n\t\t\t\t<\/dd><\/dl><br style=\"clear: both\" \/><dl class='gallery-item'>\n\t\t\t<dt class='gallery-icon landscape'>\n\t\t\t\t<a href='https:\/\/web.fs.uni-lj.si\/cem\/wp-content\/uploads\/2012\/04\/Rheology-3-Plate-plate-measuring-geometry.png'><img loading=\"lazy\" decoding=\"async\" width=\"200\" height=\"142\" src=\"https:\/\/web.fs.uni-lj.si\/cem\/wp-content\/uploads\/2012\/04\/Rheology-3-Plate-plate-measuring-geometry-200x142.png\" class=\"attachment-thumbnail size-thumbnail\" alt=\"\" aria-describedby=\"gallery-1-867\" srcset=\"https:\/\/web.fs.uni-lj.si\/cem\/wp-content\/uploads\/2012\/04\/Rheology-3-Plate-plate-measuring-geometry-200x142.png 200w, https:\/\/web.fs.uni-lj.si\/cem\/wp-content\/uploads\/2012\/04\/Rheology-3-Plate-plate-measuring-geometry-300x214.png 300w, https:\/\/web.fs.uni-lj.si\/cem\/wp-content\/uploads\/2012\/04\/Rheology-3-Plate-plate-measuring-geometry-420x300.png 420w, https:\/\/web.fs.uni-lj.si\/cem\/wp-content\/uploads\/2012\/04\/Rheology-3-Plate-plate-measuring-geometry.png 776w\" sizes=\"(max-width: 200px) 100vw, 200px\" \/><\/a>\n\t\t\t<\/dt>\n\t\t\t\t<dd class='wp-caption-text gallery-caption' id='gallery-1-867'>\n\t\t\t\tPlate-plate measuring geometry\n\t\t\t\t<\/dd><\/dl><dl class='gallery-item'>\n\t\t\t<dt class='gallery-icon landscape'>\n\t\t\t\t<a href='https:\/\/web.fs.uni-lj.si\/cem\/wp-content\/uploads\/2012\/04\/Rheology-4-Ceramic-shaft-cone-and-plate.png'><img loading=\"lazy\" decoding=\"async\" width=\"200\" height=\"142\" src=\"https:\/\/web.fs.uni-lj.si\/cem\/wp-content\/uploads\/2012\/04\/Rheology-4-Ceramic-shaft-cone-and-plate-200x142.png\" class=\"attachment-thumbnail size-thumbnail\" alt=\"\" aria-describedby=\"gallery-1-868\" srcset=\"https:\/\/web.fs.uni-lj.si\/cem\/wp-content\/uploads\/2012\/04\/Rheology-4-Ceramic-shaft-cone-and-plate-200x142.png 200w, https:\/\/web.fs.uni-lj.si\/cem\/wp-content\/uploads\/2012\/04\/Rheology-4-Ceramic-shaft-cone-and-plate-300x214.png 300w, https:\/\/web.fs.uni-lj.si\/cem\/wp-content\/uploads\/2012\/04\/Rheology-4-Ceramic-shaft-cone-and-plate-420x300.png 420w, https:\/\/web.fs.uni-lj.si\/cem\/wp-content\/uploads\/2012\/04\/Rheology-4-Ceramic-shaft-cone-and-plate.png 776w\" sizes=\"(max-width: 200px) 100vw, 200px\" \/><\/a>\n\t\t\t<\/dt>\n\t\t\t\t<dd class='wp-caption-text gallery-caption' id='gallery-1-868'>\n\t\t\t\tCeramic shaft cone and plate\n\t\t\t\t<\/dd><\/dl><br style=\"clear: both\" \/><dl class='gallery-item'>\n\t\t\t<dt class='gallery-icon landscape'>\n\t\t\t\t<a href='https:\/\/web.fs.uni-lj.si\/cem\/wp-content\/uploads\/2012\/04\/Rheology-5-Solid-clamp-measuring-geometry.png'><img loading=\"lazy\" decoding=\"async\" width=\"200\" height=\"142\" src=\"https:\/\/web.fs.uni-lj.si\/cem\/wp-content\/uploads\/2012\/04\/Rheology-5-Solid-clamp-measuring-geometry-200x142.png\" class=\"attachment-thumbnail size-thumbnail\" alt=\"\" aria-describedby=\"gallery-1-869\" srcset=\"https:\/\/web.fs.uni-lj.si\/cem\/wp-content\/uploads\/2012\/04\/Rheology-5-Solid-clamp-measuring-geometry-200x142.png 200w, https:\/\/web.fs.uni-lj.si\/cem\/wp-content\/uploads\/2012\/04\/Rheology-5-Solid-clamp-measuring-geometry-300x214.png 300w, https:\/\/web.fs.uni-lj.si\/cem\/wp-content\/uploads\/2012\/04\/Rheology-5-Solid-clamp-measuring-geometry-420x300.png 420w, https:\/\/web.fs.uni-lj.si\/cem\/wp-content\/uploads\/2012\/04\/Rheology-5-Solid-clamp-measuring-geometry.png 776w\" sizes=\"(max-width: 200px) 100vw, 200px\" \/><\/a>\n\t\t\t<\/dt>\n\t\t\t\t<dd class='wp-caption-text gallery-caption' id='gallery-1-869'>\n\t\t\t\tSolid clamp measuring geometry\n\t\t\t\t<\/dd><\/dl><dl class='gallery-item'>\n\t\t\t<dt class='gallery-icon landscape'>\n\t\t\t\t<a href='https:\/\/web.fs.uni-lj.si\/cem\/wp-content\/uploads\/2012\/04\/Rheology-6-Transparent-solid-specimen.png'><img loading=\"lazy\" decoding=\"async\" width=\"200\" height=\"142\" src=\"https:\/\/web.fs.uni-lj.si\/cem\/wp-content\/uploads\/2012\/04\/Rheology-6-Transparent-solid-specimen-200x142.png\" class=\"attachment-thumbnail size-thumbnail\" alt=\"\" aria-describedby=\"gallery-1-870\" srcset=\"https:\/\/web.fs.uni-lj.si\/cem\/wp-content\/uploads\/2012\/04\/Rheology-6-Transparent-solid-specimen-200x142.png 200w, https:\/\/web.fs.uni-lj.si\/cem\/wp-content\/uploads\/2012\/04\/Rheology-6-Transparent-solid-specimen-300x214.png 300w, https:\/\/web.fs.uni-lj.si\/cem\/wp-content\/uploads\/2012\/04\/Rheology-6-Transparent-solid-specimen-420x300.png 420w, https:\/\/web.fs.uni-lj.si\/cem\/wp-content\/uploads\/2012\/04\/Rheology-6-Transparent-solid-specimen.png 776w\" sizes=\"(max-width: 200px) 100vw, 200px\" \/><\/a>\n\t\t\t<\/dt>\n\t\t\t\t<dd class='wp-caption-text gallery-caption' id='gallery-1-870'>\n\t\t\t\tTransparent solid specimen\n\t\t\t\t<\/dd><\/dl><br style=\"clear: both\" \/>\n\t\t<\/div>\n\n<\/div>\n<div class=\"firefox_white\" style=\"float: right; width: 44%;\">\n<p><strong>Rheological measurements<\/strong> at <strong>CEM<\/strong> are performed in a controlled stress rheometer. A rotational controlled-stress rheometer consists of two symmetrical, coaxial geometries between which the molten or solid polymer to be measured is placed. One of the two geometries rotates while the other one remains at rest. An induction electrical motor applies a constant torque and a rotational optical encoder measures the rotational speed of the movable surface. The sample between the surfaces limits how fast and how much the movable geometry can rotate and these two parameters are related to the sample\u2019s viscosity and compliance, respectively.<\/p>\n<p>Our lab is equipped with three rotational rheometers:<\/p>\n<ul>\n<li><strong>Anton Paar MCR 302<\/strong><\/li>\n<li><strong>Anton Paar MCR 702<\/strong><\/li>\n<li><strong>ThermoFischer Haake MARSII<\/strong><\/li>\n<\/ul>\n<p>RHC Laboratory can test <strong>polymeric materials<\/strong> in either <strong>molten or solid state<\/strong> for rheological properties in a wide range of temperatures and loading conditions. Rheological tests available:<\/p>\n<ul>\n<li><strong>Viscosity measurements \u2013 \u03b7(\u03c9, T) or \u03b7(shear rate, T);<span style=\"line-height: 100%;\">\u00a0\u03b7 = viscosity, T= Temperature, \u03c9 = angular frequency<\/span><\/strong><\/li>\n<li><strong>Dynamic measurements \u2013 J\u2019(\u03c9, T), J\u2019\u2019(\u03c9, T), tan \u03b4(\u03c9, T);\u00a0J\u2019 = Storage compliance, J\u201d = Loss compliance<\/strong><\/li>\n<li><strong>Long term creep measurements &#8211; J(t,T).\u00a0<span style=\"text-align: left;\">\u03b4 = damping characteristic, J = Shear creep compliance<\/span><\/strong><\/li>\n<\/ul>\n<h1><strong>Contact:<\/strong><\/h1>\n<p style=\"text-align: left;\"><strong>Dr. Lidija Slemenik Per\u0161e<\/strong><\/p>\n<p style=\"text-align: left;\"><a href=\"mailto:lidija.slemenikperse@fs.uni-lj.si\">lidija.slemenikperse@fs.uni-lj.si<\/a><\/p>\n<p style=\"text-align: left;\"><strong>Telefone:<\/strong>\u00a0<a href=\"tel:01 6207 100\">01 6207 100<\/a><\/p>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>RHEOLOGICAL CHARACTERIZATION Rheological measurements at CEM are performed in a controlled stress rheometer. A rotational controlled-stress rheometer consists of two symmetrical, coaxial geometries between which the molten or solid polymer to be measured is placed. One of the two geometries rotates while the other one remains at rest. An induction electrical motor applies a constant [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":51,"menu_order":8,"comment_status":"closed","ping_status":"closed","template":"showcase.php","meta":{"_et_pb_use_builder":"","_et_pb_old_content":"","_et_gb_content_width":"","footnotes":""},"class_list":["post-67","page","type-page","status-publish","hentry"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/web.fs.uni-lj.si\/cem\/index.php?rest_route=\/wp\/v2\/pages\/67","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/web.fs.uni-lj.si\/cem\/index.php?rest_route=\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/web.fs.uni-lj.si\/cem\/index.php?rest_route=\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/web.fs.uni-lj.si\/cem\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/web.fs.uni-lj.si\/cem\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=67"}],"version-history":[{"count":5,"href":"https:\/\/web.fs.uni-lj.si\/cem\/index.php?rest_route=\/wp\/v2\/pages\/67\/revisions"}],"predecessor-version":[{"id":2260,"href":"https:\/\/web.fs.uni-lj.si\/cem\/index.php?rest_route=\/wp\/v2\/pages\/67\/revisions\/2260"}],"up":[{"embeddable":true,"href":"https:\/\/web.fs.uni-lj.si\/cem\/index.php?rest_route=\/wp\/v2\/pages\/51"}],"wp:attachment":[{"href":"https:\/\/web.fs.uni-lj.si\/cem\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=67"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}