Limit of Applicability of the Monomer-Enhanced Mechanism for Radical Generation in Persulfate Initiated Polymerization of Acrylamide

Autores
Rintoul, Ignacio; Wandrey, Christine
Año de publicación
2010
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
The limit of applicability of the monomer-enhanced mechanism as dominant mechanism ruling the initiation process of the polymerization of acrylamide (AM) initiated with potassium persulfate (K2S2O8) has been determined. The kinetics and mechanisms for radical generation were studied in solution at very low monomer and initiator concentrations. The transition of the initiation mechanism from dominant monomer-enhanced dissociation to dominant thermal decomposition of persulfate was observed. Both mechanisms contribute equally to radical generation at [AM] / [K2S2O8] = 4.5. Thermal decomposition dominates at lower [AM] or higher [K2S2O8] and opposite variations promote the monomer-enhanced dissociation. This work also includes quantification of the rate coefficients, efficiencies and activation energies of the mentioned mechanisms, and the kinetics of AM polymerization when photochemically initiated with phenylbis(2,4,6-trimethylbenzoyl)-phosphine oxide.
Fil: Rintoul, Ignacio. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Santa Fe. Instituto de Desarrollo Tecnológico Para la Industria Química (i); Argentina
Fil: Wandrey, Christine. Ecole Polytechnique Federale de Lausanne; Suiza
Materia
Kinetics
Mechanism
Initiation
Acrylamide
Persulfate
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/13700
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/13700
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Limit of Applicability of the Monomer-Enhanced Mechanism for Radical Generation in Persulfate Initiated Polymerization of AcrylamideRintoul, IgnacioWandrey, ChristineKineticsMechanismInitiationAcrylamidePersulfatehttps://purl.org/becyt/ford/1.4https://purl.org/becyt/ford/1The limit of applicability of the monomer-enhanced mechanism as dominant mechanism ruling the initiation process of the polymerization of acrylamide (AM) initiated with potassium persulfate (K2S2O8) has been determined. The kinetics and mechanisms for radical generation were studied in solution at very low monomer and initiator concentrations. The transition of the initiation mechanism from dominant monomer-enhanced dissociation to dominant thermal decomposition of persulfate was observed. Both mechanisms contribute equally to radical generation at [AM] / [K2S2O8] = 4.5. Thermal decomposition dominates at lower [AM] or higher [K2S2O8] and opposite variations promote the monomer-enhanced dissociation. This work also includes quantification of the rate coefficients, efficiencies and activation energies of the mentioned mechanisms, and the kinetics of AM polymerization when photochemically initiated with phenylbis(2,4,6-trimethylbenzoyl)-phosphine oxide.Fil: Rintoul, Ignacio. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Santa Fe. Instituto de Desarrollo Tecnológico Para la Industria Química (i); ArgentinaFil: Wandrey, Christine. Ecole Polytechnique Federale de Lausanne; SuizaPlanta Piloto de Ingeniería Química2010-10info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/13700Rintoul, Ignacio; Wandrey, Christine; Limit of Applicability of the Monomer-Enhanced Mechanism for Radical Generation in Persulfate Initiated Polymerization of Acrylamide; Planta Piloto de Ingeniería Química; Latin American Applied Research; 40; 4; 10-2010; 365-3720327-07931851-8796enginfo:eu-repo/semantics/altIdentifier/url/http://www.laar.uns.edu.ar/indexes/i40_04.htminfo:eu-repo/semantics/altIdentifier/url/http://ref.scielo.org/kp6nm9info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-03T10:04:04Zoai:ri.conicet.gov.ar:11336/13700instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-03 10:04:05.041CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Limit of Applicability of the Monomer-Enhanced Mechanism for Radical Generation in Persulfate Initiated Polymerization of Acrylamide
title Limit of Applicability of the Monomer-Enhanced Mechanism for Radical Generation in Persulfate Initiated Polymerization of Acrylamide
spellingShingle Limit of Applicability of the Monomer-Enhanced Mechanism for Radical Generation in Persulfate Initiated Polymerization of Acrylamide
Rintoul, Ignacio
Kinetics
Mechanism
Initiation
Acrylamide
Persulfate
title_short Limit of Applicability of the Monomer-Enhanced Mechanism for Radical Generation in Persulfate Initiated Polymerization of Acrylamide
title_full Limit of Applicability of the Monomer-Enhanced Mechanism for Radical Generation in Persulfate Initiated Polymerization of Acrylamide
title_fullStr Limit of Applicability of the Monomer-Enhanced Mechanism for Radical Generation in Persulfate Initiated Polymerization of Acrylamide
title_full_unstemmed Limit of Applicability of the Monomer-Enhanced Mechanism for Radical Generation in Persulfate Initiated Polymerization of Acrylamide
title_sort Limit of Applicability of the Monomer-Enhanced Mechanism for Radical Generation in Persulfate Initiated Polymerization of Acrylamide
dc.creator.none.fl_str_mv Rintoul, Ignacio
Wandrey, Christine
author Rintoul, Ignacio
author_facet Rintoul, Ignacio
Wandrey, Christine
author_role author
author2 Wandrey, Christine
author2_role author
dc.subject.none.fl_str_mv Kinetics
Mechanism
Initiation
Acrylamide
Persulfate
topic Kinetics
Mechanism
Initiation
Acrylamide
Persulfate
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.4
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv The limit of applicability of the monomer-enhanced mechanism as dominant mechanism ruling the initiation process of the polymerization of acrylamide (AM) initiated with potassium persulfate (K2S2O8) has been determined. The kinetics and mechanisms for radical generation were studied in solution at very low monomer and initiator concentrations. The transition of the initiation mechanism from dominant monomer-enhanced dissociation to dominant thermal decomposition of persulfate was observed. Both mechanisms contribute equally to radical generation at [AM] / [K2S2O8] = 4.5. Thermal decomposition dominates at lower [AM] or higher [K2S2O8] and opposite variations promote the monomer-enhanced dissociation. This work also includes quantification of the rate coefficients, efficiencies and activation energies of the mentioned mechanisms, and the kinetics of AM polymerization when photochemically initiated with phenylbis(2,4,6-trimethylbenzoyl)-phosphine oxide.
Fil: Rintoul, Ignacio. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Santa Fe. Instituto de Desarrollo Tecnológico Para la Industria Química (i); Argentina
Fil: Wandrey, Christine. Ecole Polytechnique Federale de Lausanne; Suiza
description The limit of applicability of the monomer-enhanced mechanism as dominant mechanism ruling the initiation process of the polymerization of acrylamide (AM) initiated with potassium persulfate (K2S2O8) has been determined. The kinetics and mechanisms for radical generation were studied in solution at very low monomer and initiator concentrations. The transition of the initiation mechanism from dominant monomer-enhanced dissociation to dominant thermal decomposition of persulfate was observed. Both mechanisms contribute equally to radical generation at [AM] / [K2S2O8] = 4.5. Thermal decomposition dominates at lower [AM] or higher [K2S2O8] and opposite variations promote the monomer-enhanced dissociation. This work also includes quantification of the rate coefficients, efficiencies and activation energies of the mentioned mechanisms, and the kinetics of AM polymerization when photochemically initiated with phenylbis(2,4,6-trimethylbenzoyl)-phosphine oxide.
publishDate 2010
dc.date.none.fl_str_mv 2010-10
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/13700
Rintoul, Ignacio; Wandrey, Christine; Limit of Applicability of the Monomer-Enhanced Mechanism for Radical Generation in Persulfate Initiated Polymerization of Acrylamide; Planta Piloto de Ingeniería Química; Latin American Applied Research; 40; 4; 10-2010; 365-372
0327-0793
1851-8796
url http://hdl.handle.net/11336/13700
identifier_str_mv Rintoul, Ignacio; Wandrey, Christine; Limit of Applicability of the Monomer-Enhanced Mechanism for Radical Generation in Persulfate Initiated Polymerization of Acrylamide; Planta Piloto de Ingeniería Química; Latin American Applied Research; 40; 4; 10-2010; 365-372
0327-0793
1851-8796
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/http://www.laar.uns.edu.ar/indexes/i40_04.htm
info:eu-repo/semantics/altIdentifier/url/http://ref.scielo.org/kp6nm9
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv Planta Piloto de Ingeniería Química
publisher.none.fl_str_mv Planta Piloto de Ingeniería Química
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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score 13.13397

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