{"id":61904,"date":"2018-03-09T22:49:48","date_gmt":"2018-03-09T22:49:48","guid":{"rendered":"https:\/\/www.deberes.net\/tesis\/sin-categoria\/fibras-polimericas-avanzadas-modificaion-superficial-e-interfacial\/"},"modified":"2018-03-09T22:49:48","modified_gmt":"2018-03-09T22:49:48","slug":"fibras-polimericas-avanzadas-modificaion-superficial-e-interfacial","status":"publish","type":"post","link":"https:\/\/www.deberes.net\/tesis\/quimica-de-interfases\/fibras-polimericas-avanzadas-modificaion-superficial-e-interfacial\/","title":{"rendered":"Fibras polimericas avanzadas modificaion superficial e interfacial"},"content":{"rendered":"<h2>Tesis doctoral de <strong> Katia Tamargo Martinez <\/strong><\/h2>\n<p>Las fibras polim\u00e9ricas de altas prestaciones ppta y pbo presentan unas propiedades mec\u00e1nicas que las hacen id\u00f3neas para su utilizaci\u00f3n como refuerzo en materiales compuestos de matriz pl\u00e1stica. Sin embargo, la fuerza de adhesi\u00f3n entre dichos constituyentes no es suficiente para que tenga lugar una correcta transmisi\u00f3n de los esfuerzos desde la matriz hacia la fibra. El presente trabajo tiene como objetivo mejorar las propiedades de adhesi\u00f3n de fibras de ppta y pbo con resinas epoxi.  para ello, se modificaron las superficies de las fibras de partida mediante tratamientos de plasmas fr\u00edos: i) generados con una radiaci\u00f3n microondas, estudi\u00e1ndose el efecto de diferentes par\u00e1metros experimentales (tiempo y potencia de exposici\u00f3n, gas empleado); ii) generados a partir de una descarga de barrera diel\u00e9ctrica (dbd), evalu\u00e1ndose el efecto de la densidad del plasma.  la espectroscopia raman ha permitido determinar la calidad de la interfase fibra matriz de los materiales compuestos monofilamentares preparados. Se observ\u00f3 que la adhesi\u00f3n en los sistemas epoxi-ppta fue m\u00e1s elevada que en los sistemas epoxi-pbo, si bien la resistencia a la tensi\u00f3n cortante de fricci\u00f3n fue m\u00e1s elevada para los sistemas epoxi pbo. Por otro lado, el grado de adhesi\u00f3n con la matriz epoxi mejor\u00f3 para los refuerzos modificados mediante plasma microondas de helio y de nitr\u00f3geno de 1 minuto, (khe 1, kn 1, zhe 1 y zn 1). Asimismo, se observ\u00f3 un efecto positivo, aunque en menor grado, para los refuerzos modificados con el plasma microondas de ox\u00edgeno de 4 minutos (ko 4 y zo 4). En los dem\u00e1s casos, no se apreciaron cambios significativos con respecto a las fibras sin modificar. Finalmente, se concluy\u00f3 que los patrones de deformaci\u00f3n de los sistemas cuando se someten a la acci\u00f3n de esfuerzos exteriores son distintos dependiendo del tipo de fibra analizado: mientras que los refuerzos de ppta tienden a fragmentarse, los de pbo tienden a despegarse. la caracterizaci\u00f3n qu\u00edmico<\/p>\n<p>&nbsp;<\/p>\n<h3>Datos acad\u00e9micos de la tesis doctoral \u00ab<strong>Fibras polimericas avanzadas modificaion superficial e interfacial<\/strong>\u00ab<\/h3>\n<ul>\n<li><strong>T\u00edtulo de la tesis:<\/strong>\u00a0 Fibras polimericas avanzadas modificaion superficial e interfacial <\/li>\n<li><strong>Autor:<\/strong>\u00a0 Katia Tamargo Martinez <\/li>\n<li><strong>Universidad:<\/strong>\u00a0 Oviedo<\/li>\n<li><strong>Fecha de lectura de la tesis:<\/strong>\u00a0 14\/12\/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>Amelia Martinez Alonso<\/li>\n<\/ul>\n<\/li>\n<li><strong>Tribunal<\/strong>\n<ul>\n<li>Presidente del tribunal:  L\u00f3pez garz\u00f3n Francisco javier <\/li>\n<li>Mar\u00eda Domingo garcia (vocal)<\/li>\n<li>mercedes Gracia garcia (vocal)<\/li>\n<li>rosa Mar\u00eda Torregrosa maci\u00e1 (vocal)<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Tesis doctoral de Katia Tamargo Martinez Las fibras polim\u00e9ricas de altas prestaciones ppta y pbo presentan unas propiedades mec\u00e1nicas que [&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":[8846,3417],"tags":[52240,136722,22103,123865,24497,19401],"class_list":["post-61904","post","type-post","status-publish","format-standard","hentry","category-oviedo","category-quimica-de-interfases","tag-amelia-Martinez-alonso","tag-katia-tamargo-Martinez","tag-lopez-garzon-francisco-javier","tag-maria-domingo-garcia","tag-mercedes-gracia-garcia","tag-rosa-maria-torregrosa-macia"],"_links":{"self":[{"href":"https:\/\/www.deberes.net\/tesis\/wp-json\/wp\/v2\/posts\/61904","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=61904"}],"version-history":[{"count":0,"href":"https:\/\/www.deberes.net\/tesis\/wp-json\/wp\/v2\/posts\/61904\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.deberes.net\/tesis\/wp-json\/wp\/v2\/media?parent=61904"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.deberes.net\/tesis\/wp-json\/wp\/v2\/categories?post=61904"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.deberes.net\/tesis\/wp-json\/wp\/v2\/tags?post=61904"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}