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dc.contributor.author
Rintoul, Ignacio
dc.date.available
2017-07-17T21:29:53Z
dc.date.issued
2017-03
dc.identifier.citation
Rintoul, Ignacio; Kinetic control of aqueous polymerization using radicals generated in different spin states; MDPI; Processes; 5; 2; 3-2017; 15-27
dc.identifier.issn
2227-9717
dc.identifier.uri
http://hdl.handle.net/11336/20779
dc.description.abstract
1) Background: Magnetic fields can interact with liquid matter in a homogeneous and instantaneous way, without physical contact, independently of its temperature, pressure and agitation degree and without modifying recipes nor heat and mass transfer conditions. In addition, magnetic fields may affect the mechanisms of generation and termination of free radicals. This paper is devoted to the elucidation of the appropriate conditions needed to develop magnetic field effects for controlling the kinetics of polymerization of water soluble monomers. 2) Methods: Thermal and photochemically initiated polymerizations were investigated at different initiator and monomer concentrations, temperatures, viscosities and magnetic field intensities. 3) Results: Significant magnetic field impact on the polymerization kinetics was only observed in photochemically initiated polymerizations carried out in viscous media and performed at relatively low magnetic field intensity. Magnetic field effects were absent in polymerizations in low viscosity media and thermally initiated polymerizations performed at low and high magnetic field intensities. The effects were explained in terms of the radical pair mechanism for intersystem crossing of spin states. 4) Conclusion: Polymerization kinetics of water soluble monomers can be potentially controlled using magnetic fields only under very specific reaction conditions.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
MDPI
dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
Magnetic Field
dc.subject
Radical Polymerization
dc.subject
Quantum Chemistry
dc.subject
Acrylamide
dc.subject
Solution Polymerization
dc.subject
Photopolymerization
dc.subject
Process Control
dc.subject.classification
Físico-Química, Ciencia de los Polímeros, Electroquímica
dc.subject.classification
Ciencias Químicas
dc.subject.classification
CIENCIAS NATURALES Y EXACTAS
dc.title
Kinetic control of aqueous polymerization using radicals generated in different spin states
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2017-07-13T18:46:42Z
dc.journal.volume
5
dc.journal.number
2
dc.journal.pagination
15-27
dc.journal.pais
Suiza
dc.journal.ciudad
Basel
dc.description.fil
Fil: Rintoul, Ignacio. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Desarrollo Tecnológico para la Industria Química. Universidad Nacional del Litoral. Instituto de Desarrollo Tecnológico para la Industria Química; Argentina
dc.journal.title
Processes
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/http://www.mdpi.com/2227-9717/5/2/15
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.3390/pr5020015
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