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Modelling Degradative Chain Transfer in d ‐Limonene/2‐Ethylhexyl Acrylate Free‐Radical Copolymerization
Author(s) -
Zhang Yujie,
Dubé Marc A.,
VivaldoLima Eduardo
Publication year - 2016
Publication title -
macromolecular symposia
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.257
H-Index - 76
eISSN - 1521-3900
pISSN - 1022-1360
DOI - 10.1002/masy.201500086
Subject(s) - limonene , copolymer , acrylate , allylic rearrangement , butyl acrylate , chain (unit) , chain transfer , polymer chemistry , chemistry , radical , kinetics , organic chemistry , radical polymerization , catalysis , polymer , chromatography , physics , quantum mechanics , astronomy , essential oil
Summary Degradative chain transfer plays a significant role in the free‐radical copolymerization of d ‐limonene (LIM) and 2 ‐ethylhexyl acrylate (EHA). This is due to d ‐limonene allylic radicals. A kinetic model was developed to account for degradative chain transfer. Experimental data at feed compositions (LIM/EHA, mol/mol) of 40/60, 50/50, 30/70 were compared with model predictions. The model revealed the considerable effect of degradative chain transfer on conversion, copolymer composition and molecular weight. Moreover, it indicates that degradative chain transfer to d ‐limonene is not only conversion‐dependent but also concentration‐dependent.