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Synthesis and characterization of polylimonene: Polymer of an optically active terpene
Author(s) -
Singh Anamika,
Kamal Meet
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.36250
Subject(s) - polymerization , limonene , polymer chemistry , polymer , benzoyl peroxide , chemistry , glass transition , inert gas , solvent , radical polymerization , chain transfer , kinetics , materials science , photochemistry , organic chemistry , chromatography , essential oil , physics , quantum mechanics
Radical polymerization of limonene (limonene) using benzoyl peroxide (BPO) as an initiator at 85°C ± 1°C under an inert atmosphere of nitrogen in xylene as solvent was carried out. The system follows nonideal kinetics: R p α [I] 0.3 [M] 1.4 , due to both primary radical termination and degradative chain transfer reaction. The activation energy of the polymerization was estimated to be 22.97 kJ mol −1 . 1 H‐NMR spectrum of polymer shows the presence of a triplet between 2 and 2.5 δ, which reveals that β‐carbon of limonene is the active site in the polymerization of limonene. The FTIR spectrum of the polymer shows band at 1645 cm −1 due to gem disubstituted CC stretching vibrations. The glass transition temperature ( T g ) of the polylimonene of the polylimonene is 116°C. © 2012 Wiley Periodicals, Inc. J Appl Polym Sci, 2012