<?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>1405-7743</journal-id>
<journal-title><![CDATA[Ingeniería, investigación y tecnología]]></journal-title>
<abbrev-journal-title><![CDATA[Ing. invest. y tecnol.]]></abbrev-journal-title>
<issn>1405-7743</issn>
<publisher>
<publisher-name><![CDATA[Universidad Nacional Autónoma de México, Facultad de Ingeniería]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S1405-77432017000400369</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Efecto de la biofibra de queratina en las propiedades de un biopolímero termoplástico: Estudio preliminar]]></article-title>
<article-title xml:lang="en"><![CDATA[Effect of keratin biofiber on the properties of a thermoplastic biopolymer: Preliminary study]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Sánchez-Olivares]]></surname>
<given-names><![CDATA[Guadalupe]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Medina-Torres]]></surname>
<given-names><![CDATA[Luis]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Calderas]]></surname>
<given-names><![CDATA[Fausto]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Sánchez-Solis]]></surname>
<given-names><![CDATA[Antonio]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Moreno-Morales]]></surname>
<given-names><![CDATA[Rigel Leonardo]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Ramírez-González]]></surname>
<given-names><![CDATA[Víctor]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Manero]]></surname>
<given-names><![CDATA[Octavio]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Centro de Innovación Aplicada en Tecnologías Competitivas Dirección de Investigación, Posgrado y Capacitación ]]></institution>
<addr-line><![CDATA[León, Gto ]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Universidad Nacional Autónoma de México Facultad de Química ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Centro de Innovación Aplicada en Tecnologías Competitivas Dirección de Investigación, Posgrado y Capacitación ]]></institution>
<addr-line><![CDATA[León, Gto ]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af4">
<institution><![CDATA[,Universidad Nacional Autónoma de México Instituto de Investigaciones en Materiales ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af5">
<institution><![CDATA[,Universidad Nacional Autónoma de México Instituto de Investigaciones en Materiales ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af6">
<institution><![CDATA[,Centro de Innovación Aplicada en Tecnologías Competitivas Dirección de Investigación, Posgrado y Capacitación ]]></institution>
<addr-line><![CDATA[León, Gto ]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af7">
<institution><![CDATA[,Universidad Nacional Autónoma de México Instituto de Investigaciones en Materiales ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Mexico</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>12</month>
<year>2017</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>12</month>
<year>2017</year>
</pub-date>
<volume>18</volume>
<numero>4</numero>
<fpage>369</fpage>
<lpage>378</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S1405-77432017000400369&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S1405-77432017000400369&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S1405-77432017000400369&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen En el presente trabajo se evaluó el efecto de la biofibra de queratina, obtenida de los desechos de la industria de la curtiduría de México, en un biopolímero termoplástico a base de almidón. Los materiales compuestos se obtuvieron por extrusión reactiva. Se utilizaron aditivos retardantes a la flama libres de compuestos halogenados para estudiar el efecto de la biofibra de forma comparativa. Los estudios termogravimétrico y reológico revelaron que la biofibra proporciona mayor estabilidad térmica al biopolímero, particularmente en combinación con un aditivo retardante a la flama, ya que se reduce la rapidez de pérdida de masa. Esto se atribuyó a la formación de estructuras más complejas resistentes a la alta temperatura. El análisis dinámico-mecánico, mostró que la biofibra tiene un efecto importante en el módulo de almacenamiento (E&#8217;), ya que se incrementa considerablemente cuando la biofibra se adiciona en combinación con los aditivos retardantes a la flama. La evaluación de las propiedades mecánicas (módulo de Young, resistencia a la tensión, deformación a la ruptura y tenacidad), confirmaron el efecto de la biofibra como agente de carga. Por otro lado, cuando la biofibra se adiciona sin aditivo retardante a la flama, la deformación a la ruptura y la tenacidad se incrementan considerablemente, lo cual se atribuyó a una buena adhesión de la biofibra con la matriz polimérica.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract In this work, the effect of keratin biofiber on the properties of a thermoplastic starch biopolymer (TPS) is investigated. The keratin biofiber was obtained from tannery industry waste. The materials were compounded by reactive extrusion and injection molding. Traditional halogen-free Flame Retardant (FR) additives were used for comparison. According to the thermogravimetric and rheological analyses, the addition of the keratin biofiber increases the thermal stability of the TPS, especially in combination with FR additives, since the mass loss rate was reduced. This behavior is attributed to the formation of more complex and resistant structures in the composite material. From dynamic-mechanical analysis, the keratin biofiber has an important effect on the storage modulus (E&#8217;) as it increases considerably. According to the mechanical properties, Yong&#8217;modulus, tensile strength, strain at break and tenacity results supported that keratin biofiber acts as filler in TPS. On the other hand, when keratin fiber is added without FR in TPS, strain at break and tenacity are increased considerably. This is attributed to a good adhesion of the keratin biofiber with the polymer matrix.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[biofibra]]></kwd>
<kwd lng="es"><![CDATA[queratina]]></kwd>
<kwd lng="es"><![CDATA[biopolímero]]></kwd>
<kwd lng="es"><![CDATA[estabilidad térmica]]></kwd>
<kwd lng="es"><![CDATA[refuerzo mecánico]]></kwd>
<kwd lng="es"><![CDATA[desechos de la curtiduría]]></kwd>
<kwd lng="en"><![CDATA[biofiber]]></kwd>
<kwd lng="en"><![CDATA[keratin]]></kwd>
<kwd lng="en"><![CDATA[biopolymer]]></kwd>
<kwd lng="en"><![CDATA[thermal stability]]></kwd>
<kwd lng="en"><![CDATA[mechanical reinforcement]]></kwd>
<kwd lng="en"><![CDATA[tannery industry waste]]></kwd>
</kwd-group>
</article-meta>
</front><back>
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