{"id":39777,"date":"1999-01-01T00:00:00","date_gmt":"1999-01-01T00:00:00","guid":{"rendered":""},"modified":"1999-01-01T00:00:00","modified_gmt":"1999-01-01T00:00:00","slug":"complejos-polimero-metal-estudio-de-las-modificaciones-conformacionales-en-la-polin-vinil-2-pirrolidona-inducidas-por-sales-de-molibdeno-y-vanadio-formacion-y-caracterizacion-de-los-correspondient","status":"publish","type":"post","link":"https:\/\/www.deberes.net\/tesis\/quimica\/complejos-polimero-metal-estudio-de-las-modificaciones-conformacionales-en-la-polin-vinil-2-pirrolidona-inducidas-por-sales-de-molibdeno-y-vanadio-formacion-y-caracterizacion-de-los-correspondient\/","title":{"rendered":"Complejos polimero-metal. estudio de las modificaciones conformacionales en la poli(n-vinil 2-pirrolidona) inducidas por sales de molibdeno y vanadio. formacion y caracterizacion de los correspondientes complejos."},"content":{"rendered":"<h2>Tesis doctoral de <strong> Miriam Lozano Cuenca <\/strong><\/h2>\n<p>Se ha estudiado la interacci\u00f3n que se establece entre el sulfato de vanadilo y el pentacloruro de molibdeno con la poli(n-vinil-2-pirrolidona) en medio acuoso, como paso previo a la formaci\u00f3n y caracterizaci\u00f3n de los correspondientes complejos pol\u00edmero-metal. las determinaciones viscosim\u00e9tricas y densitom\u00e9tricas indican modificaciones conformacionales en la pvp en presencia de ambas sales. las mezclas binarias agua\/mocl5 y voso4 se comportan como peores disolventes para la pvp que el agua pura, por lo que las cadenas carbonadas del pol\u00edmero han de modificar sus \u00e1ngulos de Valencia para poder adaptarse a las condiciones termodin\u00e1micas de la muestra, y con ello exponen u ocultan los sitios de interacci\u00f3n con la sal, origin\u00e1ndose estructura moleculares diversas que permiten la estabilidad del sistema en disoluci\u00f3n. Los s\u00f3lidos obtenidos por deshidrataci\u00f3n de las disoluciones agua\/pvp\/metal, tras di\u00e1lisis extrema, son complejos pol\u00edmero\/metal en los cuales la interacci\u00f3n entre la macromol\u00e9cula y los oxocationes molibdilo y vanadilo se establece a trav\u00e9s del grupo carbonilo de la pvp. La temperatura de transici\u00f3n v\u00edtrea es siempre inferior a la del pol\u00edmero puro, y la descomposici\u00f3n t\u00e9rmica se produce en varias etapas. los complejos pvp\/voso4 presentan una estructura globular, y los pvp\/mocl5 regular.<\/p>\n<p>&nbsp;<\/p>\n<h3>Datos acad\u00e9micos de la tesis doctoral \u00ab<strong>Complejos polimero-metal. estudio de las modificaciones conformacionales en la poli(n-vinil 2-pirrolidona) inducidas por sales de molibdeno y vanadio. formacion y caracterizacion de los correspondientes complejos.<\/strong>\u00ab<\/h3>\n<ul>\n<li><strong>T\u00edtulo de la tesis:<\/strong>\u00a0 Complejos polimero-metal. estudio de las modificaciones conformacionales en la poli(n-vinil 2-pirrolidona) inducidas por sales de molibdeno y vanadio. formacion y caracterizacion de los correspondientes complejos. <\/li>\n<li><strong>Autor:<\/strong>\u00a0 Miriam Lozano Cuenca <\/li>\n<li><strong>Universidad:<\/strong>\u00a0 Complutense de Madrid<\/li>\n<li><strong>Fecha de lectura de la tesis:<\/strong>\u00a0 01\/01\/1999<\/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>Rafael Lozano Fern\u00e1ndez<\/li>\n<\/ul>\n<\/li>\n<li><strong>Tribunal<\/strong>\n<ul>\n<li>Presidente del tribunal: benito Del castillo garcia <\/li>\n<li>Antonio Jerez mendez (vocal)<\/li>\n<li>amando Garrido pertierra (vocal)<\/li>\n<li>issa Antonio Katime amashta (vocal)<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Tesis doctoral de Miriam Lozano Cuenca Se ha estudiado la interacci\u00f3n que se establece entre el sulfato de vanadilo y [&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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