Bulk polymerization of styrene in the presence of polybutadiene: effect of initiator type and prepolymerization conditions on particle morphology

Autores
Soto, G.; Nava, E.; Rosas, M.; Fuenmayor, M.; Gonzalez, I. M.; Meira, Gregorio Raul; Oliva, H. M.
Año de publicación
2004
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
In this study, we investigated the synthesis of high-impact polystyrene through a series of (batch and bulk) polymerizations of styrene in the presence of 6 wt % polybutadiene. The reactions with rubber involved three stages: dissolution, prepolymerization, and finishing. The prepolymerizations were isothermal (at 70 C) and nonisothermal (with an initial heating period from 70 to 120 C). Purely thermal reactions were compared with chemically initiated polymerizations involving terf-butyl peroctoate (TBPO), 2,2´-azobisisobutyronitrile (AIBN), and their mixtures. Most prepolymerizations involved a stirring rate of 125 rpm. The particle morphology was mainly determined by the evolution of the grafting efficiency, stirring rate, and system viscosity during prepolymerization. In the nonisothermal prepolymerizations with pure AIBN, the grafting efficiency was lower than in equivalent prepolymerizations without an initiator, yielding unstable emulsions and a poor final morphology. In the nonisothermal prepolymerizations with pure TBPO, a large amount of graft copolymer was produced early in the prepolymerization, yielding a submicrometer core-shell morphology. The particle size and morphology could be controlled by the appropriate adjustment of the recipe and the prepolymerization conditions.
Fil: Soto, G.. Universidad del Zulia; Venezuela
Fil: Nava, E.. Universidad del Zulia; Venezuela
Fil: Rosas, M.. Universidad del Zulia; Venezuela
Fil: Fuenmayor, M.. Universidad del Zulia; Venezuela
Fil: Gonzalez, I. M.. Universidad del Zulia; Venezuela
Fil: Meira, Gregorio Raul. 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
Fil: Oliva, H. M.. Universidad del Zulia; Venezuela
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/26832
Acceder
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network_name_str CONICET Digital (CONICET)
spelling Bulk polymerization of styrene in the presence of polybutadiene: effect of initiator type and prepolymerization conditions on particle morphologySoto, G.Nava, E.Rosas, M.Fuenmayor, M.Gonzalez, I. M.Meira, Gregorio RaulOliva, H. M.https://purl.org/becyt/ford/2.4https://purl.org/becyt/ford/2In this study, we investigated the synthesis of high-impact polystyrene through a series of (batch and bulk) polymerizations of styrene in the presence of 6 wt % polybutadiene. The reactions with rubber involved three stages: dissolution, prepolymerization, and finishing. The prepolymerizations were isothermal (at 70 C) and nonisothermal (with an initial heating period from 70 to 120 C). Purely thermal reactions were compared with chemically initiated polymerizations involving terf-butyl peroctoate (TBPO), 2,2´-azobisisobutyronitrile (AIBN), and their mixtures. Most prepolymerizations involved a stirring rate of 125 rpm. The particle morphology was mainly determined by the evolution of the grafting efficiency, stirring rate, and system viscosity during prepolymerization. In the nonisothermal prepolymerizations with pure AIBN, the grafting efficiency was lower than in equivalent prepolymerizations without an initiator, yielding unstable emulsions and a poor final morphology. In the nonisothermal prepolymerizations with pure TBPO, a large amount of graft copolymer was produced early in the prepolymerization, yielding a submicrometer core-shell morphology. The particle size and morphology could be controlled by the appropriate adjustment of the recipe and the prepolymerization conditions.Fil: Soto, G.. Universidad del Zulia; VenezuelaFil: Nava, E.. Universidad del Zulia; VenezuelaFil: Rosas, M.. Universidad del Zulia; VenezuelaFil: Fuenmayor, M.. Universidad del Zulia; VenezuelaFil: Gonzalez, I. M.. Universidad del Zulia; VenezuelaFil: Meira, Gregorio Raul. 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; ArgentinaFil: Oliva, H. M.. Universidad del Zulia; VenezuelaWiley2004-02info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/26832Soto, G.; Nava, E.; Rosas, M.; Fuenmayor, M.; Gonzalez, I. M.; et al.; Bulk polymerization of styrene in the presence of polybutadiene: effect of initiator type and prepolymerization conditions on particle morphology; Wiley; Journal of Applied Polymer Science; 92; 3; 2-2004; 1397-14120021-8995CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1002/app.13679info:eu-repo/semantics/altIdentifier/url/http://onlinelibrary.wiley.com/doi/10.1002/app.13679/abstractinfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T09:47:25Zoai:ri.conicet.gov.ar:11336/26832instacron: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:34982025-09-29 09:47:25.741CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Bulk polymerization of styrene in the presence of polybutadiene: effect of initiator type and prepolymerization conditions on particle morphology
title Bulk polymerization of styrene in the presence of polybutadiene: effect of initiator type and prepolymerization conditions on particle morphology
spellingShingle Bulk polymerization of styrene in the presence of polybutadiene: effect of initiator type and prepolymerization conditions on particle morphology
Soto, G.
title_short Bulk polymerization of styrene in the presence of polybutadiene: effect of initiator type and prepolymerization conditions on particle morphology
title_full Bulk polymerization of styrene in the presence of polybutadiene: effect of initiator type and prepolymerization conditions on particle morphology
title_fullStr Bulk polymerization of styrene in the presence of polybutadiene: effect of initiator type and prepolymerization conditions on particle morphology
title_full_unstemmed Bulk polymerization of styrene in the presence of polybutadiene: effect of initiator type and prepolymerization conditions on particle morphology
title_sort Bulk polymerization of styrene in the presence of polybutadiene: effect of initiator type and prepolymerization conditions on particle morphology
dc.creator.none.fl_str_mv Soto, G.
Nava, E.
Rosas, M.
Fuenmayor, M.
Gonzalez, I. M.
Meira, Gregorio Raul
Oliva, H. M.
author Soto, G.
author_facet Soto, G.
Nava, E.
Rosas, M.
Fuenmayor, M.
Gonzalez, I. M.
Meira, Gregorio Raul
Oliva, H. M.
author_role author
author2 Nava, E.
Rosas, M.
Fuenmayor, M.
Gonzalez, I. M.
Meira, Gregorio Raul
Oliva, H. M.
author2_role author
author
author
author
author
author
purl_subject.fl_str_mv https://purl.org/becyt/ford/2.4
https://purl.org/becyt/ford/2
dc.description.none.fl_txt_mv In this study, we investigated the synthesis of high-impact polystyrene through a series of (batch and bulk) polymerizations of styrene in the presence of 6 wt % polybutadiene. The reactions with rubber involved three stages: dissolution, prepolymerization, and finishing. The prepolymerizations were isothermal (at 70 C) and nonisothermal (with an initial heating period from 70 to 120 C). Purely thermal reactions were compared with chemically initiated polymerizations involving terf-butyl peroctoate (TBPO), 2,2´-azobisisobutyronitrile (AIBN), and their mixtures. Most prepolymerizations involved a stirring rate of 125 rpm. The particle morphology was mainly determined by the evolution of the grafting efficiency, stirring rate, and system viscosity during prepolymerization. In the nonisothermal prepolymerizations with pure AIBN, the grafting efficiency was lower than in equivalent prepolymerizations without an initiator, yielding unstable emulsions and a poor final morphology. In the nonisothermal prepolymerizations with pure TBPO, a large amount of graft copolymer was produced early in the prepolymerization, yielding a submicrometer core-shell morphology. The particle size and morphology could be controlled by the appropriate adjustment of the recipe and the prepolymerization conditions.
Fil: Soto, G.. Universidad del Zulia; Venezuela
Fil: Nava, E.. Universidad del Zulia; Venezuela
Fil: Rosas, M.. Universidad del Zulia; Venezuela
Fil: Fuenmayor, M.. Universidad del Zulia; Venezuela
Fil: Gonzalez, I. M.. Universidad del Zulia; Venezuela
Fil: Meira, Gregorio Raul. 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
Fil: Oliva, H. M.. Universidad del Zulia; Venezuela
description In this study, we investigated the synthesis of high-impact polystyrene through a series of (batch and bulk) polymerizations of styrene in the presence of 6 wt % polybutadiene. The reactions with rubber involved three stages: dissolution, prepolymerization, and finishing. The prepolymerizations were isothermal (at 70 C) and nonisothermal (with an initial heating period from 70 to 120 C). Purely thermal reactions were compared with chemically initiated polymerizations involving terf-butyl peroctoate (TBPO), 2,2´-azobisisobutyronitrile (AIBN), and their mixtures. Most prepolymerizations involved a stirring rate of 125 rpm. The particle morphology was mainly determined by the evolution of the grafting efficiency, stirring rate, and system viscosity during prepolymerization. In the nonisothermal prepolymerizations with pure AIBN, the grafting efficiency was lower than in equivalent prepolymerizations without an initiator, yielding unstable emulsions and a poor final morphology. In the nonisothermal prepolymerizations with pure TBPO, a large amount of graft copolymer was produced early in the prepolymerization, yielding a submicrometer core-shell morphology. The particle size and morphology could be controlled by the appropriate adjustment of the recipe and the prepolymerization conditions.
publishDate 2004
dc.date.none.fl_str_mv 2004-02
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/11336/26832
Soto, G.; Nava, E.; Rosas, M.; Fuenmayor, M.; Gonzalez, I. M.; et al.; Bulk polymerization of styrene in the presence of polybutadiene: effect of initiator type and prepolymerization conditions on particle morphology; Wiley; Journal of Applied Polymer Science; 92; 3; 2-2004; 1397-1412
0021-8995
CONICET Digital
CONICET
url http://hdl.handle.net/11336/26832
identifier_str_mv Soto, G.; Nava, E.; Rosas, M.; Fuenmayor, M.; Gonzalez, I. M.; et al.; Bulk polymerization of styrene in the presence of polybutadiene: effect of initiator type and prepolymerization conditions on particle morphology; Wiley; Journal of Applied Polymer Science; 92; 3; 2-2004; 1397-1412
0021-8995
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1002/app.13679
info:eu-repo/semantics/altIdentifier/url/http://onlinelibrary.wiley.com/doi/10.1002/app.13679/abstract
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv Wiley
publisher.none.fl_str_mv Wiley
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 13.070432

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