{"id":21800,"date":"2018-03-09T09:11:43","date_gmt":"2018-03-09T09:11:43","guid":{"rendered":"https:\/\/www.deberes.net\/tesis\/sin-categoria\/desarrollo-de-modelos-estructurales-para-la-cuantificacion-del-comportamiento-reologico-de-sistemas-coloidales\/"},"modified":"2018-03-09T09:11:43","modified_gmt":"2018-03-09T09:11:43","slug":"desarrollo-de-modelos-estructurales-para-la-cuantificacion-del-comportamiento-reologico-de-sistemas-coloidales","status":"publish","type":"post","link":"https:\/\/www.deberes.net\/tesis\/fisica\/desarrollo-de-modelos-estructurales-para-la-cuantificacion-del-comportamiento-reologico-de-sistemas-coloidales\/","title":{"rendered":"Desarrollo de modelos estructurales para la cuantificaci\u00f3n del comportamiento reol\u00f3gico de sistemas coloidales"},"content":{"rendered":"<h2>Tesis doctoral de <strong> Jorge Labanda Angulo <\/strong><\/h2>\n<p>Se ha desarrollado un modelo matem\u00e1tico para describir el comportamiento reol\u00f3gico en estado no estacionario de sistemas dispersos. El modelo emplea relativamente poco par\u00e1metros que se obtienen con ensayos reol\u00f3gicos independientes, evit\u00e1ndose as\u00ed falta de univocidad en la determinaci\u00f3n de estos par\u00e1metros. el modelo propuesto considera distintos aspectos:  1,- equilibrio.  2,- tixotrop\u00eda o evoluci\u00f3n con el tiempo del nivel de estructuras.  3,- elasticidad (con tiempo de relajaci\u00f3n pr\u00e1cticamente cera y con tiempo de relaci\u00f3n finito).  el modelo permite predecir razonablemente el comportamiento reol\u00f3gico complejo de las dispersiones de la arcilla laponite(r) y las soluciones de las resinas carbopol(r).  por un lado, se ha determinado los estados f\u00edsicos en reposo y la reolog\u00eda de las dispersiones de laponite(r)  en funci\u00f3n de:  1,- tiempo de envejecimiento.  2,- concentraci\u00f3n de laponite(r).  3,- fuerza i\u00f3nica.  4,- ph.  5,- concentraci\u00f3n y peso molecular del poliacrilato de sodio a\u00f1adido.  todas las dispersiones se hn analizado tras 1,3,6,9 y 12 d\u00edas desde su preparaci\u00f3n. El estudio de la reolog\u00eda de estas dispersiones se ha realizado mediante el modelo matem\u00e1tico propuesto formado por 1 estructura sin elasticidad. por otro lado, se ha analizado el comportamiento reol\u00f3gico de las resinas carbopol(r)  941 (pm=4.106 g\/mol) y carbopol(r) 940 (pm= 1.25.106 g\/mol) y una mezcla formada por 10% en peso de carbopol(r) 941 y 90% en peso de carbopol(r) 940. Las tres soluciones muestra comportamiento reol\u00f3gico diferente en el rango de gradientes de velocidad y tiempos analizados, y se ha estudiado mediante el modelo matem\u00e1tico propuesto formado por 2 estructuras con elasticidad.<\/p>\n<p>&nbsp;<\/p>\n<h3>Datos acad\u00e9micos de la tesis doctoral \u00ab<strong>Desarrollo de modelos estructurales para la cuantificaci\u00f3n del comportamiento reol\u00f3gico de sistemas coloidales<\/strong>\u00ab<\/h3>\n<ul>\n<li><strong>T\u00edtulo de la tesis:<\/strong>\u00a0 Desarrollo de modelos estructurales para la cuantificaci\u00f3n del comportamiento reol\u00f3gico de sistemas coloidales <\/li>\n<li><strong>Autor:<\/strong>\u00a0 Jorge Labanda Angulo <\/li>\n<li><strong>Universidad:<\/strong>\u00a0 Barcelona<\/li>\n<li><strong>Fecha de lectura de la tesis:<\/strong>\u00a0 26\/02\/2003<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<h3>Direcci\u00f3n y tribunal<\/h3>\n<ul>\n<li><strong>Director de la tesis<\/strong>\n<ul>\n<li>Joan Llorens Llacuna<\/li>\n<\/ul>\n<\/li>\n<li><strong>Tribunal<\/strong>\n<ul>\n<li>Presidente del tribunal: claudi Mans i teixido <\/li>\n<li>marc Barraco serra (vocal)<\/li>\n<li>m. rosa Marcos hernandez (vocal)<\/li>\n<li>salvador Borr\u00f3s g\u00f3mez (vocal)<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Tesis doctoral de Jorge Labanda Angulo Se ha desarrollado un modelo matem\u00e1tico para describir el comportamiento reol\u00f3gico en estado no [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center 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