INVESTIGADORES
MINARI Roque Javier
artículos
Título:
Emulsion Polymerization of Styrene with iso-octyl-3-mercaptopropionate as Chain Transfer Agent
Autor/es:
ROQUE J. MINARI; JORGE R. VEGA; MANUEL GONZALEZ-SIERRA; GREGORIO R. VEGA; LUIS M. GUGLIOTTA
Revista:
JOURNAL OF APPLIED POLYMER SCIENCE
Editorial:
JOHN WILEY & SONS INC
Referencias:
Año: 2008 vol. 109 p. 3944 - 3952
ISSN:
0021-8995
Resumen:
Four batch and unseeded emulsion polymerizations of styrene were investigated, that included iso-octyl 3-mercaptopropionate (iOMP) as chain transfer agent (CTA). This compound was analysed by 13C NMR and GC/MS, resulting in a mixture of over 10 isomers. Due to the different reactivities of the CTA isomers, the produced polystyrenes presented broad and bimodal molecular weight distributions (MWDs). A mathematical model was adjusted to the measurements, and the measured MWDs were adequately predicted when assuming the CTA as a binary mixture of high but different reactivities.
