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Synthesis, characterization and properties of photoresponsive polymers comprising photocrosslinkable pendant chalcone moieties
Author(s) -
Tamilvanan Muthusamy,
Pandurangan Arumugam,
Reddy Boreddy SR,
Subramanian Kathavarayan
Publication year - 2007
Publication title -
polymer international
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.592
H-Index - 105
eISSN - 1097-0126
pISSN - 0959-8103
DOI - 10.1002/pi.2124
Subject(s) - polymer chemistry , monomer , thermogravimetric analysis , ketone , acryloyl chloride , differential scanning calorimetry , glass transition , polymer , thermal stability , materials science , methacrylate , fourier transform infrared spectroscopy , photopolymer , polymerization , chemistry , organic chemistry , chemical engineering , acrylate , physics , thermodynamics , engineering
New methacrylate monomers, namely 4‐methacryloyloxyphenyl‐4′‐fluorostyryl ketone and 4‐methacryloyloxyphenyl‐4′‐ethylstyryl ketone comprising a free radical polymerizable group and a photocrosslinkable group, were synthesized by reacting the respective hydroxychalcones with methacryloyl chloride in the presence of triethylamine. The monomers were polymerized in the presence of ethyl methyl ketone (EMK) at 70 °C using benzoyl peroxide as the initiator. The chemical structures were characterized using various spectroscopic techniques: ultraviolet, Fourier transform infrared, 1 H NMR and 13 C NMR. The thermal stability of the polymers was studied using thermogravimetric analysis in nitrogen atmosphere. Differential scanning calorimetry was used to determine the glass transition temperature of the homopolymers. Photocrosslinking of the synthesized homopolymers was investigated in solution. The two homopolymers were crosslinked within 10–15 min. After crosslinking, the homopolymers were insoluble in the same solvent. Copyright © 2006 Society of Chemical Industry