{"id":142601,"date":"1993-01-01T00:00:00","date_gmt":"1993-01-01T00:00:00","guid":{"rendered":"https:\/\/www.deberes.net\/tesis\/sin-categoria\/estudio-de-la-influencia-de-los-cationes-pb2-y-cs-en-la-conformacion-de-la-polivinilpirrolidona\/"},"modified":"1993-01-01T00:00:00","modified_gmt":"1993-01-01T00:00:00","slug":"estudio-de-la-influencia-de-los-cationes-pb2-y-cs-en-la-conformacion-de-la-polivinilpirrolidona","status":"publish","type":"post","link":"https:\/\/www.deberes.net\/tesis\/quimica\/estudio-de-la-influencia-de-los-cationes-pb2-y-cs-en-la-conformacion-de-la-polivinilpirrolidona\/","title":{"rendered":"Estudio de la influencia de los cationes pb2+ y cs+ en la conformacion de la polivinilpirrolidona."},"content":{"rendered":"<h2>Tesis doctoral de <strong>  Busturia Berrade Ignacio De <\/strong><\/h2>\n<p>El objetivo de esta memoria ha sido estudiar el comportamiento termodinamico de la polivinilpirrolidona en las mezclas agua\/pb2+ y cs+ en funcion de la composicion del cation metalico, a las temperaturas 25, 30 y 37 c.Las tecnicas experimentales utilizadas han sido la viscosimetria, refractometria diferencial y, en menor medida, la difusion de luz a laser, lo que permitio concluir: 1) las determinaciones viscosimetricas y su variacion en funcion de la composicion del cation permite poner en evidencia la existencia de transiciones conformacionales en la pvp. 2) la aplicacion de las teorias de \u00abbruchard-stockmayer-fixman\u00bb y de \u00abkurata-stockmayer-roig\u00bb permiten cuantificar la magnitud del fenomeno y su localizacion. 3) el parametro intermolecular b muestra variaciones debidas al cambio conformacional. 4) la ecuacion de katime et al se aplica perfectamente a los resultados experimentales, tanto para el pb2+ como para el cs+ en todo el intervalo de composicion estudiado y para las tres temperaturas. 5) existe una relacion unica entre log(k\/kzita) y (a-0.5) si se emplean los valores actuales de kzita. 6) la refractometria permite detectar la existencia de transiciones conformacionales en polimeros disueltos en sistemas binarios.<\/p>\n<p>&nbsp;<\/p>\n<h3>Datos acad\u00e9micos de la tesis doctoral \u00ab<strong>Estudio de la influencia de los cationes pb2+ y cs+ en la conformacion de la polivinilpirrolidona.<\/strong>\u00ab<\/h3>\n<ul>\n<li><strong>T\u00edtulo de la tesis:<\/strong>\u00a0 Estudio de la influencia de los cationes pb2+ y cs+ en la conformacion de la polivinilpirrolidona. <\/li>\n<li><strong>Autor:<\/strong>\u00a0  Busturia Berrade Ignacio De <\/li>\n<li><strong>Universidad:<\/strong>\u00a0 Complutense de Madrid<\/li>\n<li><strong>Fecha de lectura de la tesis:<\/strong>\u00a0 01\/01\/1993<\/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 Mar\u00eda Teijon Rivera<\/li>\n<\/ul>\n<\/li>\n<li><strong>Tribunal<\/strong>\n<ul>\n<li>Presidente del tribunal: Jorge Tamarit Rodriguez <\/li>\n<li>Issa Antonio Katime Amashta (vocal)<\/li>\n<li>Carmelo Lopez-arias Calleja (vocal)<\/li>\n<li>Enrique Bl\u00e1zquez Fern\u00e1ndez (vocal)<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Tesis doctoral de Busturia Berrade Ignacio De El objetivo de esta memoria ha sido estudiar el comportamiento termodinamico de la [&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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