<?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>S1405-77432022000200104</article-id>
<article-id pub-id-type="doi">10.22201/fi.25940732e.2022.23.2.012</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Estudio reológico de soluciones poliméricas de carboximetil celulosa]]></article-title>
<article-title xml:lang="en"><![CDATA[Rheological behavior of polymer solutions of carboxymethyl cellulose]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Puente-Córdova]]></surname>
<given-names><![CDATA[Jesús Gabino]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Hernández-Ramírez]]></surname>
<given-names><![CDATA[Claudia Lizeth]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Reyes-Melo]]></surname>
<given-names><![CDATA[Martín Edgar]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Rentería-Baltiérrez]]></surname>
<given-names><![CDATA[Flor Yanhira]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Miranda-Valdez]]></surname>
<given-names><![CDATA[Isaac Yair]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad Autónoma de Nuevo León Facultad de Ingeniería Mecánica y Eléctrica Laboratorio de Reología de Polímeros]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Universidad Autónoma de Nuevo León Facultad de Ingeniería Mecánica y Eléctrica ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Universidad Autónoma de Nuevo León Facultad de Ingeniería Mecánica y Eléctrica Programa Doctoral en Ingeniería de Materiales]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af4">
<institution><![CDATA[,Universidad Autónoma de Nuevo León Facultad de Ciencias Químicas ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af5">
<institution><![CDATA[,Aalto University School of Chemical Engineering ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Finland</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>06</month>
<year>2022</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>06</month>
<year>2022</year>
</pub-date>
<volume>23</volume>
<numero>2</numero>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S1405-77432022000200104&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S1405-77432022000200104&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S1405-77432022000200104&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen La carboximetil celulosa CMC es un polímero biocompatible, cuyo proceso de síntesis consiste en modificar químicamente la macroestructura de la celulosa. Este derivado de celulosa se utiliza tradicionalmente tanto en la industria de alimentos como la farmacéutica. La optimización de estas aplicaciones se relaciona de manera directa con la comprensión y manipulación de la reología de las soluciones acuosas de la CMC. En este trabajo se estudiaron soluciones de CMC de diferente concentración mediante la interpretación de sus curvas experimentales de viscosidad, en función de la tasa de corte, del nivel de concentración y de la temperatura. Las curvas experimentales de viscosidad para las soluciones estudiadas mostraron un comportamiento reológico del tipo pseudoplástico que es menos evidente para las soluciones más diluidas. Se identificó que la viscosidad de las soluciones aumenta con el incremento de su concentración, pero disminuye con el incremento de la temperatura. Los resultados experimentales se ajustaron al modelo de Ostwald o ley de la potencia y al modelo de Cross, mostrando ambos modelos una buena correlación, pero presentan discrepancias con las curvas experimentales a tasas de corte inferiores a 200 s-1. Finalmente, se proponen dos modelos empíricos, que son una extensión del modelo de Ostwald, uno para predecir la magnitud de la viscosidad en función de la tasa de corte y la concentración de CMC, y otro que describe la viscosidad en función de la temperatura y la tasa de corte. Estos resultados constituyen una metodología sistemática para la evaluación de soluciones poliméricas de la CMC y derivados de celulosa.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract Carboxymethyl cellulose is a biocompatible polymer whose synthesis process consists of chemically modifying the macrostructure of cellulose. This cellulose derivative is traditionally used in both the food and pharmaceutical industries. Optimizing these applications is directly related to understanding and manipulating the rheology of aqueous CMC solutions. In this work, CMC solutions of different concentrations were studied by interpreting their experimental viscosity curves as a function of shear rate, concentration level, and temperature. The experimental viscosity curves for the solutions studied showed a shear-thinning rheological behavior that is less evident for the more dilute solutions. It was identified that the viscosity of the solutions increases with increasing concentration but decreases with increasing temperature. The experimental results were adjusted to the Ostwald model or power law and the Cross model, both models showing a good correlation, but they show discrepancies with the experimental curves at shear rates lower than 200 s-1. Finally, two empirical models are proposed, which are an extension of the Ostwald model, one to predict the magnitude of the viscosity as a function of the shear rate and the concentration of CMC, and another that describes the viscosity as a function of temperature and the shear rate. These results constitute a systematic methodology for the evaluation of polymeric solutions of CMC and cellulose derivatives.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Carboximetil celulosa]]></kwd>
<kwd lng="es"><![CDATA[viscosidad]]></kwd>
<kwd lng="es"><![CDATA[modelo reológico]]></kwd>
<kwd lng="es"><![CDATA[ley de la potencia]]></kwd>
<kwd lng="es"><![CDATA[pseudoplasticidad]]></kwd>
<kwd lng="en"><![CDATA[Carboxymethyl cellulose]]></kwd>
<kwd lng="en"><![CDATA[viscosity]]></kwd>
<kwd lng="en"><![CDATA[rheological model]]></kwd>
<kwd lng="en"><![CDATA[power law]]></kwd>
<kwd lng="en"><![CDATA[shear-thinning]]></kwd>
</kwd-group>
</article-meta>
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