<?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>S1870-249X2009000400008</article-id>
<title-group>
<article-title xml:lang="en"><![CDATA[Characterization of Copolymer Based in Polyurethane and Polyaniline (PU/PANI)]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Rangel-Vázquez]]></surname>
<given-names><![CDATA[Norma Aurea]]></given-names>
</name>
<xref ref-type="aff" rid="A01"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Salgado-Delgado]]></surname>
<given-names><![CDATA[René]]></given-names>
</name>
<xref ref-type="aff" rid="A02"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[García-Hernández]]></surname>
<given-names><![CDATA[Edgar]]></given-names>
</name>
<xref ref-type="aff" rid="A02"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Mendoza-Martínez]]></surname>
<given-names><![CDATA[Ana María]]></given-names>
</name>
<xref ref-type="aff" rid="A03"/>
</contrib>
</contrib-group>
<aff id="A01">
<institution><![CDATA[,Instituto Tecnológico de Querétaro Departamento de Metalmecánica ]]></institution>
<addr-line><![CDATA[Querétaro Querétaro]]></addr-line>
<country>México</country>
</aff>
<aff id="A02">
<institution><![CDATA[,Instituto Tecnológico de Zacatepec División de Estudios de Posgrado e Investigación ]]></institution>
<addr-line><![CDATA[Zacatepec Morelos]]></addr-line>
<country>México</country>
</aff>
<aff id="A03">
<institution><![CDATA[,Instituto Tecnológico de Ciudad Madero División de Estudios de Posgrado e Investigación ]]></institution>
<addr-line><![CDATA[Cd. Madero Tamaulipas]]></addr-line>
<country>México</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>12</month>
<year>2009</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>12</month>
<year>2009</year>
</pub-date>
<volume>53</volume>
<numero>4</numero>
<fpage>248</fpage>
<lpage>252</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S1870-249X2009000400008&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S1870-249X2009000400008&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S1870-249X2009000400008&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="en"><p><![CDATA[The present work describes the synthesis and characterization of polyurethane (PU), polyaniline (PANI) and three IPNs (90/10, 80/20, 70/30) ratios were characterized by Fourier transformed infrared (FTIR) to analyze the generated functional groups of the synthesis. The combination PU/PANI was accomplished through the interconnection of the two polymers via condensation of PU prepolymer terminal NCO groups and the amine groups of PANI. DMA studies indicated that the PU had higher glass transition temperatures (Tg) with the increase of PANI. SEM micrographics were obtained to 1000X of the PU, PANI and the ratios 90/10, 80/20 and 70/30 of PU/PANI. A morphological interpretation was proposed in which PANI chains formed a phase dispersed in a PU matrix, linked together by an interphase, that could be responsible for the connectivity between the two polymers and determine excellent mechanical properties.]]></p></abstract>
<abstract abstract-type="short" xml:lang="es"><p><![CDATA[El presente trabajo describe la síntesis y caracterización del Poliuretano, (PU), Polianilina (PANI) y tres IPNs (90/10, 80/20, 70/30). Estos materiales fueron caracterizados mediante espectroscopia de infrarrojo por transformadas de Fourier (FTIR) para analizar los grupos funcionales generados de la síntesis. La combinación PU/ PANI se llevó a cabo a través de la interconexión de los dos polímeros vía condensación de grupos de NCO terminales del prepolímero de PU y las aminas de la PANI. Los estudios de DMA indicaron que el PU presentó temperaturas de transición vítreas (Tg) mayores con el incremento de PANI. Se obtuvieron las micrografías de SEM a 1000X del PU, PANI y las relaciones 90/10, 80/20 y 70/30 de PU/PANI, en donde, las cadenas de PANI formadas se dispersaron en la matriz de PU, se produjo una interfase, la cual fue la responsable de la conectividad entre los dos polímeros y determinaron excelentes propiedades mecánicas.]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[Polyurethane]]></kwd>
<kwd lng="en"><![CDATA[Polyaniline]]></kwd>
<kwd lng="en"><![CDATA[IPN]]></kwd>
<kwd lng="en"><![CDATA[FTIR]]></kwd>
<kwd lng="en"><![CDATA[DMA]]></kwd>
<kwd lng="en"><![CDATA[SEM]]></kwd>
<kwd lng="es"><![CDATA[Poliuretano]]></kwd>
<kwd lng="es"><![CDATA[polianilina]]></kwd>
<kwd lng="es"><![CDATA[IPN]]></kwd>
<kwd lng="es"><![CDATA[FTIR]]></kwd>
<kwd lng="es"><![CDATA[DMA]]></kwd>
<kwd lng="es"><![CDATA[SEM]]></kwd>
</kwd-group>
</article-meta>
</front><body><![CDATA[ <p align="justify"><font face="verdana" size="4">Article</font></p>     <p align="center"><font face="verdana" size="2">&nbsp;</font></p>     <p align="center"><font face="verdana" size="4"><b>Characterization of Copolymer Based in Polyurethane and Polyaniline (PU/PANI)</b></font></p>     <p align="center"><font face="verdana" size="2">&nbsp;</font></p>     <p align="center"><font face="verdana" size="2"><b>Norma Aurea Rangel&#150;V&aacute;zquez,<sup>1</sup> Ren&eacute; Salgado&#150;Delgado,<sup>2</sup> Edgar Garc&iacute;a&#150;Hern&aacute;ndez,<sup>2 </sup>and Ana Mar&iacute;a Mendoza&#150;Mart&iacute;nez<sup>3</sup></b></font></p>     <p align="justify"><font face="verdana" size="2">&nbsp;</font></p>     <p align="justify"><font face="verdana" size="2"><i><sup>1</sup> Departamento de Metalmec&aacute;nica del Instituto Tecnol&oacute;gico de Quer&eacute;taro, Avenida Tecnol&oacute;gico y M. Escobedo Col. Centro CP. 76000, Quer&eacute;taro, Quer&eacute;taro, M&eacute;xico. Tel (01&#150;52) 442 19 11 840.</i> <a href="mailto:nornia_rangel79@yahoo.com.mx">nornia_rangel79@yahoo.com.mx</a>.</font></p>     <p align="justify"><font face="verdana" size="2"><i><sup>2</sup> Divisi&oacute;n de Estudios de Posgrado e Investigaci&oacute;n del Instituto Tecnol&oacute;gico de Zacatepec. Calzada Instituto Tecnol&oacute;gico Num. 27, Col. Ampliaci&oacute;n Plan de Ayala, CP. 62780 Zacatepec, Morelos, M&eacute;xico.</i></font></p>     <p align="justify"><font face="verdana" size="2"><i><sup>3</sup> Divisi&oacute;n de Estudios de Posgrado e Investigaci&oacute;n del Instituto Tecnol&oacute;gico de Ciudad Madero. Juventino Rosas S/N, Col. Los Mangos, Cd. Madero, Tamaulipas, M&eacute;xico.</i></font></p>     <p align="justify"><font face="verdana" size="2">&nbsp;</font></p>     ]]></body>
<body><![CDATA[<p align="justify"><font face="verdana" size="2">Received September 12, 2009    <br>   Accepted January 28, 2010</font></p>     <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">The present work describes the synthesis and characterization of polyurethane (PU), polyaniline (PANI) and three IPNs (90/10, 80/20, 70/30) ratios were characterized by Fourier transformed infrared (FTIR) to analyze the generated functional groups of the synthesis. The combination PU/PANI was accomplished through the interconnection of the two polymers via condensation of PU prepolymer terminal NCO groups and the amine groups of PANI. DMA studies indicated that the PU had higher glass transition temperatures (Tg) with the increase of PANI. SEM micrographics were obtained to 1000X of the PU, PANI and the ratios 90/10, 80/20 and 70/30 of PU/PANI. A morphological interpretation was proposed in which PANI chains formed a phase dispersed in a PU matrix, linked together by an interphase, that could be responsible for the connectivity between the two polymers and determine excellent mechanical properties.</font></p>     <p align="justify"><font face="verdana" size="2"><b>Key words: </b>Polyurethane, Polyaniline, IPN, FTIR, DMA, SEM.</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">El presente trabajo describe la s&iacute;ntesis y caracterizaci&oacute;n del Poliuretano, (PU), Polianilina (PANI) y tres IPNs (90/10, 80/20, 70/30). Estos materiales fueron caracterizados mediante espectroscopia de infrarrojo por transformadas de Fourier (FTIR) para analizar los grupos funcionales generados de la s&iacute;ntesis. La combinaci&oacute;n PU/ PANI se llev&oacute; a cabo a trav&eacute;s de la interconexi&oacute;n de los dos pol&iacute;meros v&iacute;a condensaci&oacute;n de grupos de NCO terminales del prepol&iacute;mero de PU y las aminas de la PANI. Los estudios de DMA indicaron que el PU present&oacute; temperaturas de transici&oacute;n v&iacute;treas (Tg) mayores con el incremento de PANI. Se obtuvieron las micrograf&iacute;as de SEM a 1000X del PU, PANI y las relaciones 90/10, 80/20 y 70/30 de PU/PANI, en donde, las cadenas de PANI formadas se dispersaron en la matriz de PU, se produjo una interfase, la cual fue la responsable de la conectividad entre los dos pol&iacute;meros y determinaron excelentes propiedades mec&aacute;nicas.</font></p>     <p align="justify"><font face="verdana" size="2"><b>Palabras claves: </b>Poliuretano, polianilina, IPN, FTIR, DMA, SEM.</font></p>     ]]></body>
<body><![CDATA[<p align="justify"><font face="verdana" size="2">&nbsp;</font></p>     <p align="justify"><font face="verdana" size="2"><a href="/pdf/jmcs/v53n4/v53n4a8.pdf" target="_blank">DESCARGAR ART&Iacute;CULO EN FORMATO PDF</a></font></p>     <p align="justify"><font face="verdana" size="2">&nbsp;</font></p>     <p align="justify"><font face="verdana" size="2"><b>Acknowledgements</b></font></p>     <p align="justify"><font face="verdana" size="2">To DGEST for scholarship.</font></p>     <p align="justify"><font face="verdana" size="2">&nbsp;</font></p>     <p align="justify"><font face="verdana" size="2"><b>References</b></font></p>     <!-- ref --><p align="justify"><font face="verdana" size="2">1. Wai, P. S.; Tadokoro, M.; Watanabe, J.; Kuramoto, N. <i>Synth. 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