Emulsion polymerization of styrene with Iso‐octyl‐3‐mercaptopropionate as chain transfer agent | Zendy

Minari R. J. | Zendy; Vega J. R. | Zendy; GonzálezSierra M. | Zendy; Meira G. R. | Zendy; Gugliotta L. M. | Zendy

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Emulsion polymerization of styrene with Iso‐octyl‐3‐mercaptopropionate as chain transfer agent

Author(s) -

Minari R. J.,

Vega J. R.,

GonzálezSierra M.,

Meira G. R.,

Gugliotta L. M.

Publication year - 2008

Publication title -

journal of applied polymer science

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.575

H-Index - 166

eISSN - 1097-4628

pISSN - 0021-8995

DOI - 10.1002/app.28490

Subject(s) - styrene , emulsion polymerization , chain transfer , emulsion , transfer agent , polymer chemistry , polymerization , materials science , chemical engineering , polystyrene , copolymer , chemistry , organic chemistry , radical polymerization , polymer , engineering

Four batch and unseeded emulsion polymerizations of styrene were investigated, which included isooctyl 3‐mercaptopropionate (iOMP) as chain transfer agent (CTA). This compound was analyzed by 13 C NMR and GC/MS, resulting in a mixture of over 10 isomers. Because of 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. © 2008 Wiley Periodicals, Inc. J Appl Polym Sci, 2008

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