Mostrar el registro sencillo del ítem
dc.contributor.author
Velasquez, Eliezer
dc.contributor.author
Oliva, Haydée
dc.contributor.author
Muller, Alejandro
dc.contributor.author
Lopez, Juan
dc.contributor.author
Vega, Jorge Ruben
![Se ha confirmado la validez de este valor de autoridad por un usuario](/themes/CONICETDigital/images/authority_control/invisible.gif)
dc.contributor.author
Meira, Gregorio Raul
![Se ha confirmado la validez de este valor de autoridad por un usuario](/themes/CONICETDigital/images/authority_control/invisible.gif)
dc.contributor.author
Wambach, Mona
dc.date.available
2016-12-05T15:34:24Z
dc.date.issued
2013-01
dc.identifier.citation
Velasquez, Eliezer; Oliva, Haydée; Muller, Alejandro; Lopez, Juan; Vega, Jorge Ruben; et al.; Instability of Styrene/Polystyrene/Polybutadiene/Polystyrene-beta-Polybutadiene Emulsions that Emulate Styrene Polymerization in the Presence of Polybutadiene; Wiley; Polymer Engineering And Science; 53; 9; 1-2013; 1886-1900
dc.identifier.issn
0032-3888
dc.identifier.uri
http://hdl.handle.net/11336/8772
dc.description.abstract
This paper investigates the room-temperature demixing of oil-in-oil emulsions containing styrene (St), polybutadiene (PB), a St-butadiene star block copolymer (BC), and 2 polystyrene (PS) samples of different molecular weights; and is a contribution towards a better understanding of the stability/ instability of the reaction mixture in a bulk high impact polystyrene (HIPS) process close to the phase inversion. Twelve bulk prepolymerizations of St in the presence of PB were emulated, at 10, 15, and 20% conversion; and with constant grafting efficiencies. All the blends contained 6% in weight of butadiene units. After stirring the blends for 24 h, the decantation demixing process was monitored along 30 days, with daily measurement of the interface levels after appearance of a clear interface. All final samples exhibited an upper (PB-rich) phase and a lower (PS-rich) phase. Additionally, the experiments with the high molar mass PS and high grafting efficiencies also exhibited a third intermediate BC-rich phase. For some of the isolated phases, their unswollen morphologies were observed by TEM, and the St partition coefficient was gravimetrically determined. All the isolated phases exhibited macrophase separation into homopolymer- and copolymer-rich macrodomains, with lamellar microdomains in the copolymer-rich macrodomains. The BC showed a greater affinity towards the PS-rich phase. The separation of an independent BC-rich phase in the blends containing the high molar mass PS and at high grafting efficiencies, modifies the idea of the graft- or block copolymer molecules located at the interface of large PS-rich and PB-rich phases.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Wiley
![Se ha confirmado la validez de este valor de autoridad por un usuario](/themes/CONICETDigital/images/authority_control/invisible.gif)
dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
Polystyrene
dc.subject
Morphology
dc.subject
Blends
dc.subject.classification
Compuestos
![Se ha confirmado la validez de este valor de autoridad por un usuario](/themes/CONICETDigital/images/authority_control/invisible.gif)
dc.subject.classification
Ingeniería de los Materiales
![Se ha confirmado la validez de este valor de autoridad por un usuario](/themes/CONICETDigital/images/authority_control/invisible.gif)
dc.subject.classification
INGENIERÍAS Y TECNOLOGÍAS
![Se ha confirmado la validez de este valor de autoridad por un usuario](/themes/CONICETDigital/images/authority_control/invisible.gif)
dc.title
Instability of Styrene/Polystyrene/Polybutadiene/Polystyrene-beta-Polybutadiene Emulsions that Emulate Styrene Polymerization in the Presence of Polybutadiene
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2016-12-02T16:00:21Z
dc.journal.volume
53
dc.journal.number
9
dc.journal.pagination
1886-1900
dc.journal.pais
Estados Unidos
![Se ha confirmado la validez de este valor de autoridad por un usuario](/themes/CONICETDigital/images/authority_control/invisible.gif)
dc.journal.ciudad
New York
dc.description.fil
Fil: Velasquez, Eliezer. Universidad del Zulia; Venezuela
dc.description.fil
Fil: Oliva, Haydée. Universidad del Zulia; Venezuela
dc.description.fil
Fil: Muller, Alejandro. Universidad Simón Bolívar; Venezuela
dc.description.fil
Fil: Lopez, Juan. Universidad Simón Bolívar; Venezuela
dc.description.fil
Fil: Vega, Jorge Ruben. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Santa Fe. Instituto de Desarrollo Tecnológico para la Industria Química (i); Argentina
dc.description.fil
Fil: Meira, Gregorio Raul. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Santa Fe. Instituto de Desarrollo Tecnológico para la Industria Química (i); Argentina
dc.description.fil
Fil: Wambach, Mona. Institut für Polymerforschung; Alemania
dc.journal.title
Polymer Engineering And Science
![Se ha confirmado la validez de este valor de autoridad por un usuario](/themes/CONICETDigital/images/authority_control/invisible.gif)
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1002/pen.23450
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/http://onlinelibrary.wiley.com/doi/10.1002/pen.23450/abstract
Archivos asociados