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dc.contributor.author
Dietrich, Maira  
dc.contributor.author
Sarmoria, Claudia  
dc.contributor.author
Brandolin, Adriana  
dc.contributor.author
Asteasuain, Mariano  
dc.date.available
2023-07-11T17:32:37Z  
dc.date.issued
2022-04-28  
dc.identifier.citation
Dietrich, Maira; Sarmoria, Claudia; Brandolin, Adriana; Asteasuain, Mariano; Modeling low-density polyethylene (LDPE) production in tubular reactors: Connecting polymerization conditions with polymer microstructure and rheological behavior; Wiley VCH Verlag; Macromolecular Reaction Engineering; 16; 4; 28-4-2022; 1-15  
dc.identifier.issn
1862-832X  
dc.identifier.uri
http://hdl.handle.net/11336/203321  
dc.description.abstract
The production of low-density polyethylene (LDPE) in high-pressure tubular reactors is widely studied due to its extensive use worldwide. Reaction conditions have a crucial impact on the polymer molecular architecture, which, in turn, influences the rheological behavior of the polymer in the molten state, a very important variable during subsequent processing. Up to now, the relationships between reactor polymerization conditions, polymer microstructure, and final rheological properties are not completely established, although they could be a very useful tool for rapid process control and optimization. This work presents an integrated model of the high-pressure polymerization of ethylene in tubular reactors, consisting of the combination of a deterministic model of the tubular reactor that calculates molecular properties of the polymer and an empirical rheological model for branched molecules. The integrated model predicts conversion, temperature, and average molecular properties, as well as the bivariate molecular weight-long chain branching distribution, the branching index, and the shear viscosity flow curve for LDPE under different operating conditions. Results compare well with experimental data of an actual industrial reactor. Additionally, the effect of polymerization conditions on molecular and rheological properties is analyzed.  
dc.format
application/pdf  
dc.language.iso
eng  
dc.publisher
Wiley VCH Verlag  
dc.rights
info:eu-repo/semantics/restrictedAccess  
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/  
dc.subject
BIVARIATE MOLECULAR WEIGHT DISTRIBUTION/LONG-CHAIN BRANCHING DISTRIBUTION  
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LONG-CHAIN BRANCHES  
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LOW-DENSITY POLYETHYLENE  
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MATHEMATICAL MODEL  
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RHEOLOGICAL PROPERTIES  
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TUBULAR REACTOR  
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Otras Ingeniería Química  
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Ingeniería Química  
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INGENIERÍAS Y TECNOLOGÍAS  
dc.title
Modeling low-density polyethylene (LDPE) production in tubular reactors: Connecting polymerization conditions with polymer microstructure and rheological behavior  
dc.type
info:eu-repo/semantics/article  
dc.type
info:ar-repo/semantics/artículo  
dc.type
info:eu-repo/semantics/publishedVersion  
dc.date.updated
2023-07-07T18:22:21Z  
dc.journal.volume
16  
dc.journal.number
4  
dc.journal.pagination
1-15  
dc.journal.pais
Alemania  
dc.journal.ciudad
Weinheim  
dc.description.fil
Fil: Dietrich, Maira. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Planta Piloto de Ingeniería Química. Universidad Nacional del Sur. Planta Piloto de Ingeniería Química; Argentina  
dc.description.fil
Fil: Sarmoria, Claudia. Universidad Nacional del Sur. Departamento de Ingeniería Química; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Planta Piloto de Ingeniería Química. Universidad Nacional del Sur. Planta Piloto de Ingeniería Química; Argentina  
dc.description.fil
Fil: Brandolin, Adriana. Universidad Nacional del Sur. Departamento de Ingeniería Química; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Planta Piloto de Ingeniería Química. Universidad Nacional del Sur. Planta Piloto de Ingeniería Química; Argentina  
dc.description.fil
Fil: Asteasuain, Mariano. Universidad Nacional del Sur. Departamento de Ingeniería Química; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Planta Piloto de Ingeniería Química. Universidad Nacional del Sur. Planta Piloto de Ingeniería Química; Argentina  
dc.journal.title
Macromolecular Reaction Engineering  
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://onlinelibrary.wiley.com/doi/full/10.1002/mren.202200003?campaign=wolearlyview  
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1002/mren.202200003