Brazilian Journal of Chemical Engineering | |
Influence of reaction operation conditions on the final properties of high impact polystyrene (hips) | |
F. R. Cunha2  J. M. Costa2  M. Nele1  R. O. M. Folly1  M. B. Souza Jr.1  J. C. Pinto1  | |
[1] ,Petrobras Centro de Pesquisas Leopoldo Américo Miguez de Melo Rio de Janeiro RJ ,Brazil | |
关键词: High Impact Polystyrene; Polymer end-use properties; Experimental design; Modeling; Properties modeling; Impact strength; | |
DOI : 10.1590/S0104-66322013000300015 | |
来源: SciELO | |
【 摘 要 】
The main objective of the present work is to analyze the influence of some important operational reaction parameters (agitation speed, polybutadiene - PB - content and initiator concentration) on the final properties of High Impact Polystyrene (HIPS) produced in bulk. Variable effects are analyzed both qualitatively and quantitatively with the help of a fractional factorial design. Physical, chemical and mechanical properties were evaluated through measurement of the weight-average molecular weight (Mw), polydispersity (PD), volume-average diameter of PB particles (D(4,3)) and impact strength (Izod). It was found that PD and D(4,3) depend strongly on the initiator concentration, rubber concentration and agitation speed; Mw depends on initiator and rubber concentrations; and Izod depends on the rubber concentration, PD and D(4,3) in the analyzed experimental range. As a consequence, it was shown that control of final polymer properties can be easily performed through proper manipulation of the analyzed operational variables.
【 授权许可】
CC BY
All the contents of this journal, except where otherwise noted, is licensed under a Creative Commons Attribution License
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