{"id":34198,"date":"1998-01-01T00:00:00","date_gmt":"1998-01-01T00:00:00","guid":{"rendered":"https:\/\/www.deberes.net\/tesis\/sin-categoria\/microestructura-molecular-del-pvc-influencia-en-las-reacciones-de-hidrogenacion-y-cloracion-y-consecuencias-en-el-estudio-de-la-relacion-estructura-propiedades\/"},"modified":"1998-01-01T00:00:00","modified_gmt":"1998-01-01T00:00:00","slug":"microestructura-molecular-del-pvc-influencia-en-las-reacciones-de-hidrogenacion-y-cloracion-y-consecuencias-en-el-estudio-de-la-relacion-estructura-propiedades","status":"publish","type":"post","link":"https:\/\/www.deberes.net\/tesis\/quimica\/microestructura-molecular-del-pvc-influencia-en-las-reacciones-de-hidrogenacion-y-cloracion-y-consecuencias-en-el-estudio-de-la-relacion-estructura-propiedades\/","title":{"rendered":"Microestructura molecular del pvc. influencia en las reacciones de hidrogenacion y cloracion y consecuencias en el estudio de la relacion estructura-propiedades."},"content":{"rendered":"<h2>Tesis doctoral de <strong>  Contreras Ramirez Jes\u00fas Miguel <\/strong><\/h2>\n<p>Inicialmente la memoria recoge el estdio del efecto de la microestructura molecular derivada de la tacticidad del pvc (secuencias t\u00e1cticas y conformaciones asociadas con ellas) sobre los mecanismos de las reacciones de hidrogenaci\u00f3n y de cloraci\u00f3n. Para ello y mediante t\u00e9cnicas de rmn e ir se investiga la evoluci\u00f3n de la microestructura molecular con el grado de conversi\u00f3n para ambas reacciones, diferenciando la microestructura-tacticidad (definida anteriormente) y la microestructura relacionada con los cambios en la composici\u00f3n qu\u00edmica de las unidades monom\u00e9ricas de pvc que reaccionan, resultantes de las respectivas reacciones de modificaci\u00f3n y a la que denominamos microestructura composicional. Los resultados permiten establecer la dependencia entre la microestructura-tacticidad (reactividad preferente de las configuraciones mmr y rrmr terminales de secuencias isot\u00e1cticas y sindiot\u00e1cticas respectivamente) y los mecanismos de reacci\u00f3n. Dicha dependencia es cr\u00edtica en el caso de la hidrogenaci\u00f3n y menos determinante en el de la cloraci\u00f3n.  a trav\u00e9s de los pol\u00edmeros-modelo obtenidos de microestructura bien definida se establecen correlaciones entre la microestructura y las propiedades: estabilidad t\u00e9rmica, tg, relajaci\u00f3n beta y distribuci\u00f3n de cargas de espacio, lleg\u00e1ndose a la conclusi\u00f3n de que la microestructura-tacticidad es un factor determinante en los procesos f\u00edsicos responsables de las propiedades f\u00edsicas del pvc.  el trabajo ofrece contribuciones originales de importancia cient\u00edfica y tecnol\u00f3gica.<\/p>\n<p>&nbsp;<\/p>\n<h3>Datos acad\u00e9micos de la tesis doctoral \u00ab<strong>Microestructura molecular del pvc. influencia en las reacciones de hidrogenacion y cloracion y consecuencias en el estudio de la relacion estructura-propiedades.<\/strong>\u00ab<\/h3>\n<ul>\n<li><strong>T\u00edtulo de la tesis:<\/strong>\u00a0 Microestructura molecular del pvc. influencia en las reacciones de hidrogenacion y cloracion y consecuencias en el estudio de la relacion estructura-propiedades. <\/li>\n<li><strong>Autor:<\/strong>\u00a0  Contreras Ramirez Jes\u00fas Miguel <\/li>\n<li><strong>Universidad:<\/strong>\u00a0 Complutense de Madrid<\/li>\n<li><strong>Fecha de lectura de la tesis:<\/strong>\u00a0 01\/01\/1998<\/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> Millan Rodriguez Jos\u00e9 Luis<\/li>\n<\/ul>\n<\/li>\n<li><strong>Tribunal<\/strong>\n<ul>\n<li>Presidente del tribunal:  Soto Camara Jos\u00e9 Luis <\/li>\n<li>Felix Arranz Alonso (vocal)<\/li>\n<li>Juan  Jos\u00e9 Freire Gomez (vocal)<\/li>\n<li>Mar\u00eda n G\u00f3mez-fatou Rodr\u00edguez (vocal)<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Tesis doctoral de Contreras Ramirez Jes\u00fas Miguel Inicialmente la memoria recoge el estdio del efecto de la microestructura molecular derivada [&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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