Characterization of terpolymers containing 1,2,4‐oxadiazolic pendant groups with potential application as workover fluids |
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| Authors: | Isabel Vega Melisa Lamanna Eliana Fissore Norma D'Accorso Ana M. Rojas |
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| Affiliation: | 1. Empresa de Servicios Especiales San Antonio Pride S.A., Carlos Pellegrini 1133, Buenos Aires C1053ABW, Argentina;2. Centro de Investigaciones en Hidratos de Carbono (CIHIDECAR‐CONICET), Departamento de Quimica Organica, University of Buenos Aires, Int., Güiraldes 2160, Cdad. Universitaria, Buenos Aires C1428EGA, Argentina;3. Departamento de Industrias, Facultad de Ciencias Exactas y Naturales, University of Buenos Aires, Int., Güiraldes 2160, Cdad. Universitaria, Buenos Aires C1428EGA, Argentina |
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| Abstract: | Presence of planar, bulky heterocyclic pendant groups, attached to polymer chains, alters the thermal properties and, once gelled, they modify their rheological properties as well. The authors report generation of stiff gels coming from terpolymers containing 1,2,4‐oxadiazolic pendant groups, obtained by chemical modification of commercial polyacrylonitrile. The gels formed in basic aqueous solutions were compared and the effect of substituents linked to the heterocycles on thermal stability and viscoelastic properties was also analyzed. The structural modifications were followed by FTIR. The potential use of these terpolymers as workover fluids is discussed. © 2010 Wiley Periodicals, Inc. J Appl Polym Sci, 2011 |
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| Keywords: | terpolymers polyacrylonitrile heterocyclic pendant groups viscoelastic properties workover fluids |
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