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Thermally Induced Polymerization of Muconic Esters in the Solid State Studied by Infrared Microscope Spectroscopy under Temperature Control
Author(s) -
Ueno Takako,
Furukawa Daisuke,
Matsumoto Akikazu
Publication year - 2008
Publication title -
macromolecular chemistry and physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.57
H-Index - 112
eISSN - 1521-3935
pISSN - 1022-1352
DOI - 10.1002/macp.200700493
Subject(s) - polymerization , monomer , infrared spectroscopy , chemistry , polymer chemistry , bulk polymerization , induction period , spectroscopy , infrared , photochemistry , analytical chemistry (journal) , materials science , polymer , radical polymerization , organic chemistry , optics , catalysis , physics , quantum mechanics
The polymerization mechanism and kinetics for the thermally induced solid‐state polymerization of muconic esters are revealed by infrared microscope spectroscopy using single crystals under temperature control combined with X‐ray diffraction measurements. In the present study, a definite induction period during the initial stage of the solid‐state polymerization of di(4‐chlorobenzyl) and di(4‐bromobenzyl) ( Z , Z )‐muconates upon heating in the dark is observed. Such a polymerization behavior is uniquely observed for the shrinking‐type polymerization of these monomers, but not for the expanding polymerization of bis(3,4‐methylenedioxybenzyl) ( E , E )‐muconate. The reaction mechanism is discussed on the basis of the experimental results for the kinetic analysis of the polymerization by infrared spectroscopy as well as structural determination by X‐ray diffraction measurements.