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dc.contributor.author
Gomez, María Lorena
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dc.contributor.author
Previtali, Carlos Mario
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dc.contributor.author
Montejano, Hernan Alfredo
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dc.date.available
2019-02-12T15:40:56Z
dc.date.issued
2007-04
dc.identifier.citation
Gomez, María Lorena; Previtali, Carlos Mario; Montejano, Hernan Alfredo; Phenylonium salts as third component of the photoinitiator system safranine O/triethanolamine: A comparative study in aqueous media; Elsevier; Polymer; 48; 8; 4-2007; 2355-2361
dc.identifier.issn
0032-3861
dc.identifier.uri
http://hdl.handle.net/11336/69962
dc.description.abstract
The efficiency of the photoinitiator system composed of safranine and triethanolamine for the polymerization of acrylamide in water was improved by the incorporation of onium salts. The phenylonium salts employed were diphenyliodonium chloride, triphenylsulfonium triflate, tetraphenyphosphonium chloride and tetraphenylarsonium chloride hydrate. Among them, diphenyliodonium presents the highest efficiency, followed by triphenylsulfonium. In an appropriate concentration of triethanolamine, the behavior of the sulfonium salt resembles that of iodonium. Tetraphenyphosphonium and tetraphenylarsonuim have little effect over the polymerization rate; however, interesting effects over the photophysical properties of the system were found. Two important conclusions emanate from the work: the phenylonium salts studied aggregate in water in a behavior similar to hydrotropes and several factors contribute to the accelerating effect of the onium salt on the polymerization rate. The main differences in the observed efficiency of the salts might reside in the redox potentials of the salts and in their ability to prevent the photobleaching of safranine in the presence of triethanolamine. © 2007 Elsevier Ltd. All rights reserved.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Elsevier
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dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
Onium Salts
dc.subject
Photopolymerization
dc.subject
Three-Component Photoinitiators
dc.subject.classification
Otras Ciencias Químicas
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dc.subject.classification
Ciencias Químicas
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dc.subject.classification
CIENCIAS NATURALES Y EXACTAS
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dc.title
Phenylonium salts as third component of the photoinitiator system safranine O/triethanolamine: A comparative study in aqueous media
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2019-02-05T14:12:40Z
dc.journal.volume
48
dc.journal.number
8
dc.journal.pagination
2355-2361
dc.journal.pais
Países Bajos
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dc.journal.ciudad
Amsterdam
dc.description.fil
Fil: Gomez, María Lorena. Universidad Nacional de Río Cuarto. Facultad de Ciencias Exactas Fisicoquímicas y Naturales. Departamento de Química; Argentina
dc.description.fil
Fil: Previtali, Carlos Mario. Universidad Nacional de Río Cuarto. Facultad de Ciencias Exactas Fisicoquímicas y Naturales. Departamento de Química; Argentina
dc.description.fil
Fil: Montejano, Hernan Alfredo. Universidad Nacional de Río Cuarto. Facultad de Ciencias Exactas Fisicoquímicas y Naturales. Departamento de Química; Argentina
dc.journal.title
Polymer
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dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S0032386107001565
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/https://doi.org/10.1016/j.polymer.2007.02.015
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