Experimental and theoretical study of the use of multifunctional initiators in the high impact polystyrene bulk process

Berkenwald, Emilio; Laganá, María Laura; Maffi, Juan M.; Acuña, Pablo; Morales Balado, Graciela Elizabeth; Estenoz, Diana

Artículo de Publicación Periódica:
Experimental and theoretical study of the use of multifunctional initiators in the high impact polystyrene bulk process

dc.contributor.author	Berkenwald, Emilio
dc.contributor.author	Laganá, María Laura
dc.contributor.author	Maffi, Juan M.
dc.contributor.author	Acuña, Pablo
dc.contributor.author	Morales Balado, Graciela Elizabeth
dc.contributor.author	Estenoz, Diana
dc.date.accessioned	2019-06-14T21:18:43Z
dc.date.available	2019-06-14T21:18:43Z
dc.date.issued	2018-02
dc.description.abstract	"The performance of three multifunctional peroxide initiators in a bulk high impact polystyrene (HIPS) process was experimentally and theoretically investigated. For the experimental work, a series of batch reactions was carried out, comprising the main stages of an industrial HIPS bulk process using multifunctional initiators with varying functionality and structure: DEKTP (cyclic trifunctional), PDP (cyclic bifunctional) and L331 (linear bifunctional). The theoretical work consisted of the development of a comprehensive, generic yet detailed mathematical model for bulk HIPS polymerization using multifunctional initiators. The model predicts the evolution of the main polymerization variables (including conversion, molecular weights, grafting efficiency) as well as the detailed molecular structure of the polymeric species (free polystyrene, residual polybutadiene and graft copolymer), and the melt flow index of the obtained HIPS. The model was adjusted and validated using experimental results, obtaining a good agreement between measured and predicted values. The model was used to theoretically evaluate the effect of the operating conditions on the molecular and physical characteristics of the obtained polymer. It was found that the use of multifunctional initiators leads to high polymerization rates and high molecular weights simultaneously, while promoting the grafting of styrene onto butadiene, generating a microstructure with salami-type morphologies."	en
dc.identifier.issn	0032-3888
dc.identifier.uri	http://ri.itba.edu.ar/handle/123456789/1616
dc.language.iso	en	en
dc.relation	info:eu-repo/semantics/altIdentifier/doi/10.1002/pen.24547
dc.subject	POLIMERIZACION	es
dc.subject	INICIADORES MULTIFUNCIONALES	es
dc.subject	POLIESTIRENOS	es
dc.subject	POLIBUTADIENOS	es
dc.title	Experimental and theoretical study of the use of multifunctional initiators in the high impact polystyrene bulk process	en
dc.type	Artículos de Publicaciones Periódicas	es
dc.type	info:eu-repo/semantics/acceptedVersion
dspace.entity.type	Artículo de Publicación Periódica
itba.description.filiation	Fil: Berkenwald, Emilio. Instituto Tecnológico de Buenos Aires; Argentina.
itba.description.filiation	Fil: Laganá, María Laura. Instituto Tecnológico de Buenos Aires; Argentina.
itba.description.filiation	Fil: Maffi, Juan M. Instituto Tecnológico de Buenos Aires; Argentina.
itba.description.filiation	Fil: Acuña, Pablo. Centro de Investigación en Química Aplicada; México.
itba.description.filiation	Fil: Morales Balado, Graciela Elizabeth. Centro de Investigación en Química Aplicada; México.
itba.description.filiation	Fil: Estenoz, Diana. Instituto Tecnológico de Buenos Aires; Argentina.
itba.description.filiation	Fil: Estenoz, Diana. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina.
itba.description.filiation	Fil: Estenoz, Diana. Universidad Nacional del Litoral; Argentina.