{"id":77943,"date":"2018-03-09T23:23:34","date_gmt":"2018-03-09T23:23:34","guid":{"rendered":"https:\/\/www.deberes.net\/tesis\/sin-categoria\/sorcion-de-enaftalenos-en-pola%c2%admeros-de-b-ciclodextrina\/"},"modified":"2018-03-09T23:23:34","modified_gmt":"2018-03-09T23:23:34","slug":"sorcion-de-enaftalenos-en-pola%c2%admeros-de-b-ciclodextrina","status":"publish","type":"post","link":"https:\/\/www.deberes.net\/tesis\/quimica-fisica\/sorcion-de-enaftalenos-en-pola%c2%admeros-de-b-ciclodextrina\/","title":{"rendered":"Sorci\u00f3n de enaftalenos en pol\u00edmeros de b-ciclodextrina"},"content":{"rendered":"<h2>Tesis doctoral de <strong> I\u00f1igo Xabier Garcia Zubiri <\/strong><\/h2>\n<p>Titulo: sorcion de naftalenos en pol\u00edmeros de b-ciclodextrina  resumen: esta tesis estudia los mecanismos que intervienen en la sorci\u00f3n de derivados naftal\u00e9nicos en pol\u00edmeros de &#038; 61538;-ciclodextrina. Se analiz\u00f3 previamente la complejaci\u00f3n con el mon\u00f3mero de ciclodextrina, en disoluci\u00f3n utilizando espectroscopia de fluorescencia y c\u00e1lculos de mec\u00e1nica molecular, y por espectroscopia infrarroja y an\u00e1lisis t\u00e9rmico para las dispersiones s\u00f3lidas. Estos naftalenos forman complejos con estequiometr\u00eda 1:1, y la espectroscopia infrarroja parece ser una herramienta apropiada para el estudio de las interacciones entre cielodextri\u00f1as y compuestos arom\u00e1ticos. Se sintetizaron pol\u00edmeros insoluoles de &#61538;-cd por entrecruzamiento de &#61538;-ciclodextrina con agentes bifuncionales: epiclorhidrina, dicloruro succ\u00ednico, 1,6-diisocianato de hexametileno (hmdi) y 2,4-diisocianato de tolueno (tdi) para obtener pol\u00edmeros de ciclodextrina con diferentes polaridades en sus redes. Los estudios de sorci\u00f3n muestran que hay dos mecanismos distintos en la retenci\u00f3n de naft\u00e1lenos en la matriz polim\u00e9rica: inclusi\u00f3n en la cavidad de las ciclodextrinas y sorci\u00f3n en la red de entrecruzante. El an\u00e1lisis termodin\u00e1mico de las isotermas de sorci\u00f3n y la aplicaci\u00f3n de modelos de isotermas indican que el proceso est\u00e1 gobernado principalmente por los complejos de inclusi\u00f3n en las mol\u00e9culas de cd para las redes polares o con entrecruzantes de cadena corta. Sin embargo, para redes menos polares es la retenci\u00f3n en los puentes de entrecruzante el mecanismo de sorci\u00f3n m\u00e1s importante. La estabilidad de las dispersiones s\u00f3lidas de naftalenos con pol\u00edmeros es mucho mayor que la de las dispersiones con cd. Los pol\u00edmeros de sacarosa an\u00e1logos (los mismos grupos qu\u00edmicos pero diferentes topolog\u00edas) muestran sorci\u00f3n y estabilidad menor que los pol\u00edmeros de ciclodextrina correspondientes. As\u00ed, se encuentra un efecto sin\u00e9rgico para los pol\u00edmeros de cd: tanto las unidades &#61538;-cd como las estructuras de red contribuyen a la mayor cantidad de mol\u00e9culas hu\u00e9sped sorbidas y a su estabilizaci\u00f3n<\/p>\n<p>&nbsp;<\/p>\n<h3>Datos acad\u00e9micos de la tesis doctoral \u00ab<strong>Sorci\u00f3n de enaftalenos en pol\u00edmeros de b-ciclodextrina<\/strong>\u00ab<\/h3>\n<ul>\n<li><strong>T\u00edtulo de la tesis:<\/strong>\u00a0 Sorci\u00f3n de enaftalenos en pol\u00edmeros de b-ciclodextrina <\/li>\n<li><strong>Autor:<\/strong>\u00a0 I\u00f1igo Xabier Garcia Zubiri <\/li>\n<li><strong>Universidad:<\/strong>\u00a0 Navarra<\/li>\n<li><strong>Fecha de lectura de la tesis:<\/strong>\u00a0 16\/12\/2005<\/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>Jos\u00e9 Ram\u00f3n Isasi Allica<\/li>\n<\/ul>\n<\/li>\n<li><strong>Tribunal<\/strong>\n<ul>\n<li>Presidente del tribunal: Miguel S\u00e1nchez gonz\u00e1lez <\/li>\n<li>Luis Carlos Cesteros iturbe (vocal)<\/li>\n<li>Mar\u00eda n G\u00f3mez-fatou rodr\u00edguez (vocal)<\/li>\n<li>Juan  Jos\u00e9 Iruin sanz (vocal)<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Tesis doctoral de I\u00f1igo Xabier Garcia Zubiri Titulo: sorcion de naftalenos en pol\u00edmeros de b-ciclodextrina resumen: esta tesis estudia los [&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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