{"id":114408,"date":"2013-01-07T00:00:00","date_gmt":"2013-01-07T00:00:00","guid":{"rendered":"https:\/\/www.deberes.net\/tesis\/sin-categoria\/slow-dynamics-in-nanostructured-phases-of-diblock-gradient-and-random-copolymers-a-computational-investigation\/"},"modified":"2013-01-07T00:00:00","modified_gmt":"2013-01-07T00:00:00","slug":"slow-dynamics-in-nanostructured-phases-of-diblock-gradient-and-random-copolymers-a-computational-investigation","status":"publish","type":"post","link":"https:\/\/www.deberes.net\/tesis\/quimica-fisica\/slow-dynamics-in-nanostructured-phases-of-diblock-gradient-and-random-copolymers-a-computational-investigation\/","title":{"rendered":"Slow dynamics in nanostructured phases of diblock, gradient and random copolymers: a computational investigation"},"content":{"rendered":"<h2>Tesis doctoral de <strong> Mohammed Zakaria Slimani &#8212; <\/strong><\/h2>\n<p>En este trabajo se han investigado, mediante t\u00e9cnicas de simulaci\u00f3n computacional, diversos procesos din\u00e1micos lentos en fases nanoestructuradas de copol\u00edmeros. Estas incluyen fases ordenadas de copol\u00edmeros dibloque con morfolog\u00eda esf\u00e9rica, cil\u00edndrica y lamelar, fases desordenadas de copol\u00edmeros aleatorios, y fases lamelares de copol\u00edmeros gradiente. Se ha caracterizado la heterogeneidad din\u00e1mica de la relajaci\u00f3n segmental en funci\u00f3n de la distancia de los mon\u00f3meros a la interfase. El an\u00e1lisis revela que en las fases ordenadas de copol\u00edmeros dibloque los gradientes de movilidad, generalmente asumidos en an\u00e1lisis experimentales, son esencialmente un efecto interfacial, extendi\u00e9ndose a unos pocos (2-4) nan\u00f3metros. Por el contrario, la presencia de entornos de composici\u00f3n muy diferente para ambas especies qu\u00edmicas en los copol\u00edmeros gradiente lamelares da lugar a una heterogeneidad din\u00e1mica extrema. En el caso de los copol\u00edmeros aleatorios dicha heterogeneidad es mucho m\u00e1s reducida. Se han caracterizado, en los sistemas dibloque, las concentraciones efectivas y autoconcentraciones, un concepto generalmente utilizado en el an\u00e1lisis experimental de la din\u00e1mica segmental en mezclas polim\u00e9ricas, y que ha sido recientemente modificado para el caso de copol\u00edmeros dibloque ordenados. Las simulaciones revelan que dichas modificaciones son incorrectas y que pueden dar lugar a una interpretaci\u00f3n err\u00f3nea de los datos experimentales. Finalmente, se ha investigado la relajaci\u00f3n del modo normal a ambos lados de la transici\u00f3n orden-desorden. Se encuentra que en la fase ordenada esta relajaci\u00f3n ocurre en dos pasos. El primer paso resulta de la relajaci\u00f3n de los modos de rouse del bloque, mientras que el segundo es debido al movimiento de larga escala del punto de uni\u00f3n entre los dos bloques. Los resultados de simulaci\u00f3n son cr\u00edticamente comparados con experimentos de espectroscop\u00eda diel\u00e9ctrica.<\/p>\n<p>&nbsp;<\/p>\n<h3>Datos acad\u00e9micos de la tesis doctoral \u00ab<strong>Slow dynamics in nanostructured phases of diblock, gradient and random copolymers: a computational investigation<\/strong>\u00ab<\/h3>\n<ul>\n<li><strong>T\u00edtulo de la tesis:<\/strong>\u00a0 Slow dynamics in nanostructured phases of diblock, gradient and random copolymers: a computational investigation <\/li>\n<li><strong>Autor:<\/strong>\u00a0 Mohammed Zakaria Slimani &#8212; <\/li>\n<li><strong>Universidad:<\/strong>\u00a0 Pa\u00eds vasco\/euskal herriko unibertsitatea<\/li>\n<li><strong>Fecha de lectura de la tesis:<\/strong>\u00a0 01\/07\/2013<\/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>Angel Jose Moreno Segurado<\/li>\n<\/ul>\n<\/li>\n<li><strong>Tribunal<\/strong>\n<ul>\n<li>Presidente del tribunal: Juan Colmenero de leon <\/li>\n<li>alexey Lyulin &#8212; (vocal)<\/li>\n<li>tiberio Antonio Ezquerra sanz (vocal)<\/li>\n<li>wolfgang Paul &#8212; (vocal)<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Tesis doctoral de Mohammed Zakaria Slimani &#8212; En este trabajo se han investigado, mediante t\u00e9cnicas de simulaci\u00f3n computacional, diversos procesos [&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 center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""}},"footnotes":""},"categories":[12909,560],"tags":[226792,43966,137410,226791,46788,226793],"class_list":["post-114408","post","type-post","status-publish","format-standard","hentry","category-pais-vasco-euskal-herriko-unibertsitatea","category-quimica-fisica","tag-alexey-lyulin","tag-angel-jose-moreno-segurado","tag-juan-colmenero-de-leon","tag-mohammed-zakaria-slimani","tag-tiberio-antonio-ezquerra-sanz","tag-wolfgang-paul"],"_links":{"self":[{"href":"https:\/\/www.deberes.net\/tesis\/wp-json\/wp\/v2\/posts\/114408","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.deberes.net\/tesis\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.deberes.net\/tesis\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.deberes.net\/tesis\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.deberes.net\/tesis\/wp-json\/wp\/v2\/comments?post=114408"}],"version-history":[{"count":0,"href":"https:\/\/www.deberes.net\/tesis\/wp-json\/wp\/v2\/posts\/114408\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.deberes.net\/tesis\/wp-json\/wp\/v2\/media?parent=114408"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.deberes.net\/tesis\/wp-json\/wp\/v2\/categories?post=114408"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.deberes.net\/tesis\/wp-json\/wp\/v2\/tags?post=114408"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}