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Emulsion polymerization of isoprene: Mathematical model for long‐chain branching
Author(s) -
Rodríguez Virginia I.,
Minari Roque J.,
Estenoz Diana A.,
Gugliotta Luis M.,
Meira Gregorio R.
Publication year - 2012
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.37658
Subject(s) - isoprene , branching (polymer chemistry) , chain transfer , topology (electrical circuits) , emulsion polymerization , molar mass distribution , polymerization , chain (unit) , polymer chemistry , molecule , emulsion , polymer science , materials science , chemistry , chemical engineering , radical polymerization , polymer , copolymer , organic chemistry , mathematics , physics , combinatorics , engineering , astronomy
For a batch emulsion polymerization of isoprene at 10°C in the presence of a chain transfer agent, a previous mathematical model (Minari et al., J. Appl. Polym. Sci. 2010, 116, 590) was extended for predicting the molecular weight distributions of all the generated long chain branched topologies; with each topology characterized by the number of tri‐ and tetra‐functional branches per molecule. According to the new model predictions, at the reaction end the linear topology remains as the most abundant (with ∼ 40% of the total mass), followed by the single trifunctionally branched topology (with ∼ 20% of the total mass). The model can be used for developing strategies for controlling the distribution of branches/molecule, for estimating melt viscosities, etc. © 2012 Wiley Periodicals, Inc. J. Appl. Polym. Sci., 2013