{"id":144653,"date":"1993-01-01T00:00:00","date_gmt":"1993-01-01T00:00:00","guid":{"rendered":"https:\/\/www.deberes.net\/tesis\/sin-categoria\/viscoelasticidad-y-reologia-de-mezclas-basadas-en-polimeros-liquido-cristalinos\/"},"modified":"1993-01-01T00:00:00","modified_gmt":"1993-01-01T00:00:00","slug":"viscoelasticidad-y-reologia-de-mezclas-basadas-en-polimeros-liquido-cristalinos","status":"publish","type":"post","link":"https:\/\/www.deberes.net\/tesis\/quimica\/viscoelasticidad-y-reologia-de-mezclas-basadas-en-polimeros-liquido-cristalinos\/","title":{"rendered":"Viscoelasticidad y reolog\u00eda de mezclas basadas en polimeros liquido-cristalinos"},"content":{"rendered":"<h2>Tesis doctoral de <strong> Ane Miren Zaldua Huici <\/strong><\/h2>\n<p>Las medidas de viscoelasticidad realizadas en ensayos de flexion han resultado un instrumento de gran utilidad para el estudio de los polimeros liquido-cristalinos:  x7g, vectra a y vectra b; y de las mezclas con termoplasticos, dilucidandose mediante esta tecnica aspectos tales como la naturaleza de las transiciones y la compatibilidad de los sistemas. Las medidas realizadas en reometria de extrusion capilar han permitido constatar que los flujos en traccion que se producen a la entrada del capilar orientan los dominios de polimero liquido-cristalino en la direccion del flujo, llegandose a formar dominios fibrosos. Dichos dominos hacen disminuir considerablemente la viscosidad y es por ello que al mezclar estos polimeros con termoplasticos actuan de coadyuvantes de procesado. Por otro lado, las medidas de flujo en rendiaj nos han permitido estudiar la elasticidad de fundido de las mezclas expresada en terminos de presion a la salida e hinchamiento post-extrusion.  las medidas dinamicas realizadas en traccion han servido para demostrar las excelentes prestaciones de las fibras obtenidas mediante extrusion y posterior hilado de los polimeros liquido-cristalinos y de sus mezclas. La obtencion de las fibras por este metodo se diferencia del procesado comun de los polimeros cargados en que el componente de refuerzo se forma durante el procesado.<\/p>\n<p>&nbsp;<\/p>\n<h3>Datos acad\u00e9micos de la tesis doctoral \u00ab<strong>Viscoelasticidad y reolog\u00eda de mezclas basadas en polimeros liquido-cristalinos<\/strong>\u00ab<\/h3>\n<ul>\n<li><strong>T\u00edtulo de la tesis:<\/strong>\u00a0 Viscoelasticidad y reolog\u00eda de mezclas basadas en polimeros liquido-cristalinos <\/li>\n<li><strong>Autor:<\/strong>\u00a0 Ane Miren Zaldua Huici <\/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\/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>Pedro Antonio Santamar\u00eda Ibarburu<\/li>\n<\/ul>\n<\/li>\n<li><strong>Tribunal<\/strong>\n<ul>\n<li>Presidente del tribunal: Jos\u00e9 Manuel Pere\u00f1a Conde <\/li>\n<li> Pe\u00f1a Jauregui Juan  Jos\u00e9 (vocal)<\/li>\n<li>Antonio Mu\u00f1oz Escalona (vocal)<\/li>\n<li>Mar\u00eda  Milagros Cortazar Diez (vocal)<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Tesis doctoral de Ane Miren Zaldua Huici Las medidas de viscoelasticidad realizadas en ensayos de flexion han resultado un instrumento [&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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