{"id":61133,"date":"2018-03-09T22:48:58","date_gmt":"2018-03-09T22:48:58","guid":{"rendered":"https:\/\/www.deberes.net\/tesis\/sin-categoria\/preparacion-de-nanocomposites-mediante-fotocurado-uv-estudio-de-propiedades-termicas-opticas-y-permeabilidad-a-gases\/"},"modified":"2018-03-09T22:48:58","modified_gmt":"2018-03-09T22:48:58","slug":"preparacion-de-nanocomposites-mediante-fotocurado-uv-estudio-de-propiedades-termicas-opticas-y-permeabilidad-a-gases","status":"publish","type":"post","link":"https:\/\/www.deberes.net\/tesis\/valladolid\/preparacion-de-nanocomposites-mediante-fotocurado-uv-estudio-de-propiedades-termicas-opticas-y-permeabilidad-a-gases\/","title":{"rendered":"Preparacion de nanocomposites mediante fotocurado uv. estudio de propiedades t\u00e9rmicas, \u00f3pticas  y permeabilidad a gases"},"content":{"rendered":"<h2>Tesis doctoral de <strong>  Garcia Casas Mar\u00eda  Jes\u00fas <\/strong><\/h2>\n<p>El desarrollo de materiales nanocompuestos de matriz polim\u00e9rica constituye una l\u00ednea de investigaci\u00f3n de gran inter\u00e9s dentro del \u00e1rea de las nuevas tecnolog\u00edas, ya que ofrece la posibilidad de preparar materiales con propiedades a medida dirigidos a \u00e1reas muy diversas. Se han preparado mediante irradiaci\u00f3n uv, materiales compuestos fotocurables basados en adhesivos acr\u00edlicos y nanocargas comerciales, s\u00edlices y di\u00f3xido de titanio, con distinto tama\u00f1o de part\u00edcula y diferentes tratamientos superficiales, as\u00ed como nanosilicatos del tipo montmorillonita. El objetivo ha sido establecer la influencia del tama\u00f1o y la concentraci\u00f3n de los nanoaditivos en la cin\u00e9tica y grado de conversi\u00f3n final inducido por luz policrom\u00e1tica continua (seguimiento por espectroscopia infrarroja en tiempo real) o inducido con luz l\u00e1ser pulsada (seguimiento por fluorescencia en tiempo real). En general, se observa una dependencia de la conversi\u00f3n final con el tama\u00f1o y la concentraci\u00f3n de nanopart\u00edculas de s\u00edlice. Se obtienen conversiones y velocidades de polimerizaci\u00f3n ligeramente m\u00e1s altas con las nanopart\u00edculas de menor tama\u00f1o. se ha llevado a cabo la caracterizaci\u00f3n morfol\u00f3gica mediante microscop\u00eda de fuerza at\u00f3mica, \u00e1ngulos de contacto y microscop\u00eda electr\u00f3nica de barrido y tambi\u00e9n, el estudio de propiedades t\u00e9rmicas, de transporte de disolventes y de gases, as\u00ed como estudios de absorci\u00f3n de agua a trav\u00e9s de los materiales nanocompuestos. se han medido los \u00edndices de refracci\u00f3n de los materiales nanocompuestos mediante elipsometr\u00eda espectrosc\u00f3pica de \u00e1ngulo variable. Se observa que los \u00edndices de refracci\u00f3n tienden a disminuir con el aumento de contenido de s\u00edlice mientras que, aumenta linealmente con el contenido de nanopart\u00edculas de tio2. Este resultado permitir\u00eda, mediante un m\u00e9todo sencillo, la obtenci\u00f3n de materiales con \u00edndices de refracci\u00f3n a medida modificando la concentraci\u00f3n y naturaleza de la carga. por \u00faltimo, se ha estu<\/p>\n<p>&nbsp;<\/p>\n<h3>Datos acad\u00e9micos de la tesis doctoral \u00ab<strong>Preparacion de nanocomposites mediante fotocurado uv. estudio de propiedades t\u00e9rmicas, \u00f3pticas  y permeabilidad a gases<\/strong>\u00ab<\/h3>\n<ul>\n<li><strong>T\u00edtulo de la tesis:<\/strong>\u00a0 Preparacion de nanocomposites mediante fotocurado uv. estudio de propiedades t\u00e9rmicas, \u00f3pticas  y permeabilidad a gases <\/li>\n<li><strong>Autor:<\/strong>\u00a0  Garcia Casas Mar\u00eda  Jes\u00fas <\/li>\n<li><strong>Universidad:<\/strong>\u00a0 Valladolid<\/li>\n<li><strong>Fecha de lectura de la tesis:<\/strong>\u00a0 30\/10\/2007<\/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>Carmen Peinado Margalef<\/li>\n<\/ul>\n<\/li>\n<li><strong>Tribunal<\/strong>\n<ul>\n<li>Presidente del tribunal: pablo Espinet rubio <\/li>\n<li>paula Bosch sarobe (vocal)<\/li>\n<li>pilar Tiemblo magro (vocal)<\/li>\n<li>milagros Pi\u00f1ol lacambra (vocal)<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Tesis doctoral de Garcia Casas Mar\u00eda Jes\u00fas El desarrollo de materiales nanocompuestos de matriz polim\u00e9rica constituye una l\u00ednea de investigaci\u00f3n [&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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