<?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>0012-7353</journal-id>
<journal-title><![CDATA[DYNA]]></journal-title>
<abbrev-journal-title><![CDATA[Dyna rev.fac.nac.minas]]></abbrev-journal-title>
<issn>0012-7353</issn>
<publisher>
<publisher-name><![CDATA[Universidad Nacional de Colombia]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S0012-73532025000500082</article-id>
<article-id pub-id-type="doi">10.15446/dyna.v92n239.120724</article-id>
<title-group>
<article-title xml:lang="en"><![CDATA[Synthesis of surfactants based on alkyl glyceryl ester /ether and evaluation as wax inhibitor]]></article-title>
<article-title xml:lang="es"><![CDATA[Síntesis de surfactantes basados en ésteres/éteres de alquil glicerilo y evaluación como inhibidores de ceras]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Nunes]]></surname>
<given-names><![CDATA[Denise Gentili]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Nunes]]></surname>
<given-names><![CDATA[Giovani Cavalcanti]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Lachter]]></surname>
<given-names><![CDATA[Elizabeth Roditi]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Santos]]></surname>
<given-names><![CDATA[Agatha Oliveira]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Nunes]]></surname>
<given-names><![CDATA[Rita de Cássia Pessanha]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Lucas]]></surname>
<given-names><![CDATA[Elizabete Fernandes]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
<xref ref-type="aff" rid="Aaf"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Tecnológica Celso Suckow da Fonseca Centro Federal de Educação ]]></institution>
<addr-line><![CDATA[Rio de Janeiro ]]></addr-line>
<country>Brazil</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Universidade do Estado do Rio de Janeiro  ]]></institution>
<addr-line><![CDATA[Rio de janeiro ]]></addr-line>
<country>Brazil</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Universidade Federal do Rio de Janeiro Instituto de Química ]]></institution>
<addr-line><![CDATA[Rio de Janeiro ]]></addr-line>
<country>Brazil</country>
</aff>
<aff id="Af4">
<institution><![CDATA[,Universidade Federal do Rio de Janeiro Instituto de Macromoléculas ]]></institution>
<addr-line><![CDATA[Rio de Janeiro ]]></addr-line>
<country>Brazil</country>
</aff>
<aff id="Af5">
<institution><![CDATA[,Universidade Federal do Rio de Janeiro  ]]></institution>
<addr-line><![CDATA[Rio de Janeiro ]]></addr-line>
<country>Brazil</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>12</month>
<year>2025</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>12</month>
<year>2025</year>
</pub-date>
<volume>92</volume>
<numero>239</numero>
<fpage>82</fpage>
<lpage>90</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_arttext&amp;pid=S0012-73532025000500082&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_abstract&amp;pid=S0012-73532025000500082&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_pdf&amp;pid=S0012-73532025000500082&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract This study evaluated glycerol esters (GEC12, GEC14) and ethers (GEtC14, GEtC18) as alternative paraffin inhibitors compared with a commercial product (PI-CX). Rheological tests were performed on two crude oils (A and C). A cold finger assay was performed to measure wax deposition in a model system. PI-CX showed the best performance overall, but the synthesized molecules were also effective for oil A, reducing gelation temperature, viscosity, and yield stress. GEC12 showed slightly superior performance among the synthesized inhibitors. In the model system these inhibitors had the same performance. Although PI-CX proved to be more efficient, the new compounds are low cost, biodegradable, and effective under severe conditions (5 °C). Oil C, which did not gel down to -5 °C, showed no improvement with inhibitors, indicating that not all oils require treatment. The results support the potential of these glycerol-based compounds as sustainable alternatives for paraffin inhibition in specific crude oils.]]></p></abstract>
<abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen Este estudio evaluó los ésteres de glicerol (GEC12, GEC14) y los éteres (GEtC14, GEtC18) como inhibidores de parafina alternativos en comparación con un producto comercial (PI-CX). Se realizaron pruebas reológicas en dos petróleos crudos (A y C). Se realizó un ensayo de dedo frío para medir la deposición de cera en un sistema modelo. PI-CX mostró el mejor rendimiento en general, pero las moléculas sintetizadas también fueron efectivas para el petróleo A, reduciendo la temperatura de gelificación, la viscosidad y el límite elástico. GEC12 mostró un rendimiento ligeramente superior entre los inhibidores sintetizados. En el sistema modelo, estos inhibidores tuvieron el mismo rendimiento. Aunque PI-CX demostró ser más eficiente, los nuevos compuestos son de bajo costo, biodegradables y efectivos en condiciones severas (5 °C). El petróleo C, que no gelificó a -5 °C, no mostró ninguna mejora con los inhibidores, lo que indica que ni todos los petróleos requieren tratamiento. Los resultados respaldan el potencial de estos compuestos basados en glicerol como alternativas sostenibles para la inhibición de parafina en petróleos crudos específicos.]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[petroleum]]></kwd>
<kwd lng="en"><![CDATA[rheology]]></kwd>
<kwd lng="en"><![CDATA[paraffin inhibitors]]></kwd>
<kwd lng="en"><![CDATA[glycerol esters]]></kwd>
<kwd lng="en"><![CDATA[glycerol ethers]]></kwd>
<kwd lng="es"><![CDATA[petróleo]]></kwd>
<kwd lng="es"><![CDATA[reología]]></kwd>
<kwd lng="es"><![CDATA[inhibidores de parafina]]></kwd>
<kwd lng="es"><![CDATA[ésteres de glicerol]]></kwd>
<kwd lng="es"><![CDATA[éteres de glicerol]]></kwd>
</kwd-group>
</article-meta>
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