{"id":109371,"date":"2018-03-11T10:34:48","date_gmt":"2018-03-11T10:34:48","guid":{"rendered":"https:\/\/www.deberes.net\/tesis\/sin-categoria\/high-solids-content-low-viscosity-latexes-with-small-particle-size\/"},"modified":"2018-03-11T10:34:48","modified_gmt":"2018-03-11T10:34:48","slug":"high-solids-content-low-viscosity-latexes-with-small-particle-size","status":"publish","type":"post","link":"https:\/\/www.deberes.net\/tesis\/ingenieria-y-tecnologia-quimicas\/high-solids-content-low-viscosity-latexes-with-small-particle-size\/","title":{"rendered":"High solids content low viscosity latexes with small particle size"},"content":{"rendered":"<h2>Tesis doctoral de <strong> Ines De Fatima Afonso Mariz <\/strong><\/h2>\n<p>La s\u00edntesis de alto contenido en s\u00f3lidos es un \u00e1rea de investigaci\u00f3n que en los \u00faltimos a\u00f1os ha presentado un creciente inter\u00e9s debido a las m\u00faltiples ventajas que presentan \u00e9stos l\u00e1texes; se necesitan menos capas para cubrir el substrato, el secado es m\u00e1s r\u00e1pido, proporcionan una mayor flexibilidad en la formulaci\u00f3n del producto y permiten ahorrar tanto en el almacenamiento como en el transporte. No obstante, el m\u00e1ximo contenido en s\u00f3lidos alcanzable est\u00e1 limitado por la viscosidad de la dispersi\u00f3n que aumenta con el contenido en s\u00f3lidos. Por lo tanto, para sintetizar l\u00e1tex de alto contenido en s\u00f3lidos y baja viscosidad es necesario controlar la distribuci\u00f3n de tama\u00f1os de part\u00edcula de la dispersi\u00f3n. En los trabajos descritos en bibliograf\u00eda se han producido l\u00e1texes de alto contenido en s\u00f3lidos pero con tama\u00f1os de part\u00edcula muy grandes para reducir la viscosidad, y relativamente baja viscosidad sintetizando l\u00e1texes bimodales con gran diferencia entre las part\u00edculas de tama\u00f1os grande y peque\u00f1o, siendo las part\u00edculas grandes de tama\u00f1os de alrededor de 1 \u00c2\u00b5. Sin embargo, los l\u00e1texes con part\u00edculas de tama\u00f1o grande no son tan buenos en la formaci\u00f3n de film. Es por esto que el objetivo principal de esta tesis ha sido el desarrollo de estrategias de polimerizaci\u00f3n que conduzcan a la s\u00edntesis de l\u00e1texes de alto contenido en s\u00f3lidos con baja viscosidad y tama\u00f1os de part\u00edcula menores que 350 nm. Primero se investig\u00f3 la s\u00edntesis de l\u00e1texes de alto contenido en s\u00f3lidos con distribuciones unimodales. Luego se ha investigado detalladamente la reolog\u00eda de las dispersiones polim\u00e9ricas concentradas. Finalmente, se dise\u00f1\u00f3 una estrategia reproducible y f\u00e1cilmente escalable para sintetizar l\u00e1texes con distribuciones bimodales que permite producir la distribuci\u00f3n de tama\u00f1os de part\u00edcula deseada y as\u00ed aumentar el contenido en s\u00f3lidos y bajar la viscosidad. Finalmente, se han formulado pinturas en base agua con l\u00e1texes con distintas distribuciones y se comprob\u00f3 que los l\u00e1texes sintetizados de alto contenido en s\u00f3lidos, baja viscosidad y tama\u00f1os de part\u00edcula peque\u00f1os mejoran las propiedades de las pinturas.<\/p>\n<p>&nbsp;<\/p>\n<h3>Datos acad\u00e9micos de la tesis doctoral \u00ab<strong>High solids content low viscosity latexes with small particle size<\/strong>\u00ab<\/h3>\n<ul>\n<li><strong>T\u00edtulo de la tesis:<\/strong>\u00a0 High solids content low viscosity latexes with small particle size <\/li>\n<li><strong>Autor:<\/strong>\u00a0 Ines De Fatima Afonso Mariz <\/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 21\/06\/2011<\/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>Jos\u00e9 Carlos De La Cal Del Rio<\/li>\n<\/ul>\n<\/li>\n<li><strong>Tribunal<\/strong>\n<ul>\n<li>Presidente del tribunal: timothy Mckenna <\/li>\n<li>mario Rui costa (vocal)<\/li>\n<li>ian Millichamp (vocal)<\/li>\n<li>keltoum Ouzineb (vocal)<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Tesis doctoral de Ines De Fatima Afonso Mariz La s\u00edntesis de alto contenido en s\u00f3lidos es un \u00e1rea 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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