<?xml version="1.0" encoding="ISO-8859-1"?><article xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<front>
<journal-meta>
<journal-id>1870-249X</journal-id>
<journal-title><![CDATA[Journal of the Mexican Chemical Society]]></journal-title>
<abbrev-journal-title><![CDATA[J. Mex. Chem. Soc]]></abbrev-journal-title>
<issn>1870-249X</issn>
<publisher>
<publisher-name><![CDATA[Sociedad Química de México A.C.]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S1870-249X2011000400008</article-id>
<title-group>
<article-title xml:lang="en"><![CDATA[Preparation and Characterization of Hybrid Materials of Epoxy Resin Type Bisphenol A With Silicon and Titanium Oxides by Sol Gel Process]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Carrillo-Castillo]]></surname>
<given-names><![CDATA[Amanda]]></given-names>
</name>
<xref ref-type="aff" rid="A01"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Osuna-Alarcón]]></surname>
<given-names><![CDATA[Juan G.]]></given-names>
</name>
<xref ref-type="aff" rid="A01"/>
</contrib>
</contrib-group>
<aff id="A01">
<institution><![CDATA[,Universidad Autónoma de Coahuila Facultad de Ciencias Químicas ]]></institution>
<addr-line><![CDATA[Saltillo Coahuila]]></addr-line>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>12</month>
<year>2011</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>12</month>
<year>2011</year>
</pub-date>
<volume>55</volume>
<numero>4</numero>
<fpage>233</fpage>
<lpage>237</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S1870-249X2011000400008&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S1870-249X2011000400008&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S1870-249X2011000400008&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="en"><p><![CDATA[Hybrid materials were synthesized from epoxy resins as a result bisphenol type A-silicon oxide and epoxy resin bisphenol type A-titanium oxide were obtained. The synthesis was done by sol-gel process using tetraethyl orthosilicate (TEOS) and titanium isopropox-ide (ITi) as inorganic precursors. The molar ratio of bisphenol A to the inorganic precursors was the studied variable. The materials were characterized by thermal analysis, infrared spectroscopy (FTIR), scanning electron microscopy (SEM) and energy-dispersive X-ray spectroscopy (EDAX). The hybrid nature of the materials was demonstrated through thermal analysis and infrared spectroscopy. In both systems, as the amount of alkoxide increased, the bands described above were more defined. This behavior indicates the interactions between the resin and the alkoxides. Hybrids with TEOS showed a smoother and homogeneus surface in its entirety, without irregularities. Hybrids with titanium isopropoxide had low roughness. Both TEOS and ITi hybrids showed a decrease on the atomic weight percentage of carbon due to a slight reduction of the organic part on the surface.]]></p></abstract>
<abstract abstract-type="short" xml:lang="es"><p><![CDATA[Fueron sintetizados materiales híbridos a partir de resinas epóxicas del tipo bisfenol A con óxido de silicio y óxido de titanio, respectivamente. Para la síntesis de los materiales se utilizó el proceso sol-gel usando tetraetilortosilicato (OSTE) e isopropóxido de titanio como precursores inorgánicos. Se estudió la relación molar de bisfenol A con los diferentes precursores inorgánicos. Los materiales fueron caracterizados por análisis térmico, espectroscopia de infrarrojo (IR), microscopía electrónica de barrido (MEB) y energía dispersiva de rayos X (EDX). La síntesis de materiales híbridos fue demostrada mediante análisis térmico y espectroscopía de infrarrojo. En ambos sistemas al incrementar la cantidad del alcóxido la intensidad de las bandas descritas anteriormente se presentaron más definidas. Este comportamiento indica la interacción entre la resina y los alcóxidos. Híbridos con OSTE mostraron una superficie lisa y homogénea sin irregularidades. Híbridos con isopropóxido de titanio de igual forma mostraron una superficie homogénea pero con baja rugosidad. Ambos sistemas híbridos mostraron una disminución del porcentaje de peso atómico de carbono, debido a una disminución de la parte orgánica en la superficie.]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[Synthesis]]></kwd>
<kwd lng="en"><![CDATA[epoxy resin]]></kwd>
<kwd lng="en"><![CDATA[sol-gel process]]></kwd>
<kwd lng="en"><![CDATA[hybrid materials]]></kwd>
<kwd lng="es"><![CDATA[Síntesis]]></kwd>
<kwd lng="es"><![CDATA[resina epóxica]]></kwd>
<kwd lng="es"><![CDATA[proceso sol-gel]]></kwd>
<kwd lng="es"><![CDATA[materiales híbridos]]></kwd>
</kwd-group>
</article-meta>
</front><body><![CDATA[ <p align="justify"><font face="verdana" size="4">Article</font></p>     <p align="justify"><font face="verdana" size="4">&nbsp;</font></p>     <p align="center"><font face="verdana" size="4"><b>Preparation and Characterization of Hybrid Materials of Epoxy Resin Type Bisphenol A With Silicon and Titanium Oxides by Sol Gel Process</b></font></p>     <p align="center"><font face="verdana" size="2">&nbsp;</font></p>     <p align="center"><font face="verdana" size="2"><b>Amanda Carrillo&#150;Castillo* and Juan G. Osuna&#150;Alarc&oacute;n</b></font></p>     <p align="justify"><font face="verdana" size="2">&nbsp;</font></p>     <p align="justify"><font face="verdana" size="2"><i>Universidad Aut&oacute;noma de Coahuila. Facultad de Ciencias Qu&iacute;micas. Blvd. Venustiano Carranza y Jos&eacute; C&aacute;rdenas Vald&eacute;s, CP. 25000. Saltillo, Coahuila. </i><a href="mailto:acc.carrillo@gmail.com">acc.carrillo@gmail.com</a></font></p>     <p align="justify"><font face="verdana" size="2">&nbsp;</font></p>     <p align="justify"><font face="verdana" size="2">Received April 6, 2011.    <br> Accepted August 31, 2011.</font></p>     ]]></body>
<body><![CDATA[<p align="justify"><font face="verdana" size="2">&nbsp;</font></p>     <p align="justify"><font face="verdana" size="2"><b>Abstract</b></font></p>     <p align="justify"><font face="verdana" size="2">Hybrid materials were synthesized from epoxy resins as a result bisphenol type A&#150;silicon oxide and epoxy resin bisphenol type A&#150;titanium oxide were obtained. The synthesis was done by sol&#150;gel process using tetraethyl orthosilicate (TEOS) and titanium isopropox&#150;ide (ITi) as inorganic precursors. The molar ratio of bisphenol A to the inorganic precursors was the studied variable. The materials were characterized by thermal analysis, infrared spectroscopy (FTIR), scanning electron microscopy (SEM) and energy&#150;dispersive X&#150;ray spectroscopy (EDAX). The hybrid nature of the materials was demonstrated through thermal analysis and infrared spectroscopy. In both systems, as the amount of alkoxide increased, the bands described above were more defined. This behavior indicates the interactions between the resin and the alkoxides. Hybrids with TEOS showed a smoother and homogeneus surface in its entirety, without irregularities. Hybrids with titanium isopropoxide had low roughness. Both TEOS and ITi hybrids showed a decrease on the atomic weight percentage of carbon due to a slight reduction of the organic part on the surface. </font></p>     <p align="justify"><font face="verdana" size="2"><b>Key words: </b>Synthesis, epoxy resin, sol&#150;gel process, hybrid materials.</font></p>     <p align="justify"><font face="verdana" size="2">&nbsp;</font></p>     <p align="justify"><font face="verdana" size="2"><b>Resumen</b></font></p>     <p align="justify"><font face="verdana" size="2">Fueron sintetizados materiales h&iacute;bridos a partir de resinas ep&oacute;xicas del tipo bisfenol A con &oacute;xido de silicio y &oacute;xido de titanio, respectivamente. Para la s&iacute;ntesis de los materiales se utiliz&oacute; el proceso sol&#150;gel usando tetraetilortosilicato (OSTE) e isoprop&oacute;xido de titanio como precursores inorg&aacute;nicos. Se estudi&oacute; la relaci&oacute;n molar de bisfenol A con los diferentes precursores inorg&aacute;nicos. Los materiales fueron caracterizados por an&aacute;lisis t&eacute;rmico, espectroscopia de infrarrojo (IR), microscop&iacute;a electr&oacute;nica de barrido (MEB) y energ&iacute;a dispersiva de rayos X (EDX). La s&iacute;ntesis de materiales h&iacute;bridos fue demostrada mediante an&aacute;lisis t&eacute;rmico y espectroscop&iacute;a de infrarrojo. En ambos sistemas al incrementar la cantidad del alc&oacute;xido la intensidad de las bandas descritas anteriormente se presentaron m&aacute;s definidas. Este comportamiento indica la interacci&oacute;n entre la resina y los alc&oacute;xidos. H&iacute;bridos con OSTE mostraron una superficie lisa y homog&eacute;nea sin irregularidades. H&iacute;bridos con isoprop&oacute;xido de titanio de igual forma mostraron una superficie homog&eacute;nea pero con baja rugosidad. Ambos sistemas h&iacute;bridos mostraron una disminuci&oacute;n del porcentaje de peso at&oacute;mico de carbono, debido a una disminuci&oacute;n de la parte org&aacute;nica en la superficie.</font></p>     <p align="justify"><font face="verdana" size="2"><b>Palabras clave: </b>S&iacute;ntesis, resina ep&oacute;xica, proceso sol&#150;gel, materiales h&iacute;bridos.</font></p>     <p align="justify"><font face="verdana" size="2">&nbsp;</font></p>     <p align="justify"><font face="verdana" size="2"><a href="/pdf/jmcs/v55n4/v55n4a8.pdf" target="_blank">DESCARGAR ART&Iacute;CULO EN FORMATO PDF</a></font></p>     ]]></body>
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