Theoretical–experimental study of the action of trace amounts of formaldehyde, propionaldehyde, and butyraldehyde as inhibitors of the ziegler–natta catalyst and the synthesis of an ethylene–propylene copolymer

dc.creatorHernández Fernández, Joaquín
dc.creatorOrtega-Toro, Rodrigo
dc.creatorCastro-Suarez, John R.
dc.date2023-09-11T19:11:48Z
dc.date2023-09-11T19:11:48Z
dc.date2023-02-22
dc.date.accessioned2023-10-03T19:10:27Z
dc.date.available2023-10-03T19:10:27Z
dc.identifierHernández-Fernández, J.; Ortega-Toro, R.; Castro-Suarez, J.R. Theoretical–Experimental Study of the Action of Trace Amounts of Formaldehyde, Propionaldehyde, and Butyraldehyde as Inhibitors of the Ziegler–Natta Catalyst and the Synthesis of an Ethylene–Propylene Copolymer. Polymers 2023, 15, 1098. https://doi.org/10.3390/ polym15051098
dc.identifierhttps://hdl.handle.net/11323/10477
dc.identifier10.3390/polym15051098
dc.identifier2073-4360
dc.identifierCorporación Universidad de la Costa
dc.identifierREDICUC - Repositorio CUC
dc.identifierhttps://repositorio.cuc.edu.co/
dc.identifier.urihttps://repositorioslatinoamericanos.uchile.cl/handle/2250/9168539
dc.descriptionThe copolymer synthesis process can be affected by failures in the production process or by contaminating compounds such as ketones, thiols, and gases, among others. These impurities act as an inhibiting agent of the Ziegler–Natta (ZN) catalyst affecting its productivity and disturbing the polymerization reaction. In this work, the effect of formaldehyde, propionaldehyde, and butyraldehyde on the ZN catalyst and the way in which it affects the final properties of the ethylene-propylene copolymer is presented by analyzing 30 samples with different concentrations of the mentioned aldehydes along with three control samples. It was determined that the presence of formaldehyde 26 ppm, propionaldehyde 65.2 ppm, and butyraldehyde 181.2 ppm considerably affect the productivity levels of the ZN catalyst; this effect increases as the concentration of aldehydes is higher in the process; likewise, these impurities affect the properties of the final product, such as the fluidity index (MFI), thermogravimetric analysis (TGA), bending, tension, and impact, which leads to a polymer with low-quality standards and less resistance to breakage. The computational analysis showed that the complexes formed by formaldehyde, propionaldehyde, and butyraldehyde with the active center of the catalyst are more stable than those obtained by the ethylene-Ti and propylene-Ti complexes, presenting values of −40.5, −47.22, −47.5, −5.2 and −1.3 kcal mol−1 respectively
dc.format15 páginas
dc.formatapplication/pdf
dc.formatapplication/pdf
dc.languageeng
dc.publisherMDPI AG
dc.publisherSwitzerland
dc.relationPolymers
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dc.rights© 2023 by the authors. Licensee MDPI, Basel, Switzerland.
dc.rightsAtribución 4.0 Internacional (CC BY 4.0)
dc.rightshttps://creativecommons.org/licenses/by/4.0/
dc.rightsinfo:eu-repo/semantics/openAccess
dc.rightshttp://purl.org/coar/access_right/c_abf2
dc.sourcehttps://www.mdpi.com/2073-4360/15/5/1098
dc.subjectFormaldehyde–propionaldehyde and butyraldehyde
dc.subjectGreen ethylene
dc.subjectZiegler–Natta
dc.subjectPolypropylene
dc.subjectCatalyst
dc.subjectDegradation
dc.subjectRandom copolymer
dc.titleTheoretical–experimental study of the action of trace amounts of formaldehyde, propionaldehyde, and butyraldehyde as inhibitors of the ziegler–natta catalyst and the synthesis of an ethylene–propylene copolymer
dc.typeArtículo de revista
dc.typehttp://purl.org/coar/resource_type/c_2df8fbb1
dc.typeText
dc.typeinfo:eu-repo/semantics/article
dc.typehttp://purl.org/redcol/resource_type/ART
dc.typeinfo:eu-repo/semantics/publishedVersion
dc.typehttp://purl.org/coar/version/c_970fb48d4fbd8a85


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