{"id":74702,"date":"2018-03-09T23:19:49","date_gmt":"2018-03-09T23:19:49","guid":{"rendered":"https:\/\/www.deberes.net\/tesis\/sin-categoria\/cristalizacion-y-transporte-de-gases-en-mezclas-de-polipropileno-isotactico-con-un-pola%c2%admero-cristal-la%c2%adquido\/"},"modified":"2018-03-09T23:19:49","modified_gmt":"2018-03-09T23:19:49","slug":"cristalizacion-y-transporte-de-gases-en-mezclas-de-polipropileno-isotactico-con-un-pola%c2%admero-cristal-la%c2%adquido","status":"publish","type":"post","link":"https:\/\/www.deberes.net\/tesis\/quimica\/cristalizacion-y-transporte-de-gases-en-mezclas-de-polipropileno-isotactico-con-un-pola%c2%admero-cristal-la%c2%adquido\/","title":{"rendered":"Cristalizaci\u00f3n y transporte de gases en mezclas de polipropileno isot\u00e1ctico con un pol\u00edmero cristal l\u00edquido"},"content":{"rendered":"<h2>Tesis doctoral de <strong>  Torre Gurutzealde Francisco Javier <\/strong><\/h2>\n<p>Este tesis estudia el comportamiento de mezclas de un pol\u00edmero cristal l\u00edquido, vectra a950, con polipropileno isot\u00e1ctico, que es un termopl\u00e1stico industrial. En concreto, en este trabajo se analiza el efecto del vectra a950 en los procesos de cristalizaci\u00f3n y fusi\u00f3n y en la morfolog\u00eda cristalina del polipropileno, determin\u00e1ndose tambi\u00e9n las propiedades barrera de las mezclas obtenidas.  las muestras estudiadas se prepararon usando diversos m\u00e9todos de mezclado. el polipropileno se emple\u00f3 en forma de granza y el pol\u00edmero cristal l\u00edquido en forma de granza, de fibra corta y de fibra larga, lo que dio lugar a diferentes morfolog\u00edas. Las principales t\u00e9cnicas experimentales utilizadas han sido, adem\u00e1s de las tradicionales en estos temas (calorimetr\u00eda diferencial de barrido, termomicroscop\u00eda \u00f3ptica, microscop\u00eda electr\u00f3nica de barrido, difracci\u00f3n de rayos x, gravimetr\u00eda de sorci\u00f3n), otra m\u00e1s novedosas como la radiaci\u00f3n sincrotr\u00f3n y la microscop\u00eda de fuerza at\u00f3mica.  se ha estudiado la cristalizaci\u00f3n, tanto din\u00e1mica como isot\u00e9rmica, as\u00ed como el comportamiento de fusi\u00f3n del polipropileno isot\u00e1ctico, tras la cristalizaci\u00f3n isot\u00e9rmica, en los materiales obtenidos mezclando dicho polipropileno con el pol\u00edmero cristal l\u00edquido en forma de granza. El an\u00e1lisis detallado del proceso de cristalizaci\u00f3n, tanto din\u00e1mica como isot\u00e9rmica, ha permitido determinar que el pol\u00edmero cristal liquido es capaz de promover la nucleaci\u00f3n del polipropileno isot\u00e1ctico, obteni\u00e9ndose diferentes formas cristalinas del mismo en funci\u00f3n del porcentaje de vectra a950 introducido. por otro lado, tambi\u00e9n se ha estudiado el efecto del vectra en la cristalizaci\u00f3n secundaria del polipropileno. Adem\u00e1s, se ha analizado la influencia del pol\u00edmenro cristal l\u00edquido sobre los cambios morfol\u00f3gicos que tiene lugar durante el proceso de calentamiento, tras la cristalizaci\u00f3n isot\u00e9rmica, hasta la fusi\u00f3n completa, en funci\u00f3n de la velocid<\/p>\n<p>&nbsp;<\/p>\n<h3>Datos acad\u00e9micos de la tesis doctoral \u00ab<strong>Cristalizaci\u00f3n y transporte de gases en mezclas de polipropileno isot\u00e1ctico con un pol\u00edmero cristal l\u00edquido<\/strong>\u00ab<\/h3>\n<ul>\n<li><strong>T\u00edtulo de la tesis:<\/strong>\u00a0 Cristalizaci\u00f3n y transporte de gases en mezclas de polipropileno isot\u00e1ctico con un pol\u00edmero cristal l\u00edquido <\/li>\n<li><strong>Autor:<\/strong>\u00a0  Torre Gurutzealde Francisco Javier <\/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 17\/06\/2005<\/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>Mar\u00eda  Milagros Cortazar Diez<\/li>\n<\/ul>\n<\/li>\n<li><strong>Tribunal<\/strong>\n<ul>\n<li>Presidente del tribunal:  Pastor barajas Jos\u00e9 Mar\u00eda <\/li>\n<li>Mar\u00eda n G\u00f3mez-fatou rodr\u00edguez (vocal)<\/li>\n<li>Javier Mart\u00ednez de salazar bascu\u00f1ana (vocal)<\/li>\n<li>Jos\u00e9 ignacio Iribarren laco (vocal)<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Tesis doctoral de Torre Gurutzealde Francisco Javier Este tesis estudia el comportamiento de mezclas de un pol\u00edmero cristal l\u00edquido, vectra [&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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