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Photocalorimetric monitoring of the polymerization of an oligo(ethylene glycol) dimethacrylate in oligo(ethylene glycol) dimethyl ethers
Author(s) -
Sandner Barbara,
Kotzian Norbert,
Tübke Jens,
Wartewig Siegfried,
Lange Otfried
Publication year - 1997
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.1997.021980905
Subject(s) - photopolymer , ethylene glycol , polymer chemistry , polymerization , monomer , differential scanning calorimetry , methacrylate , ethylene glycol dimethacrylate , radical polymerization , chemistry , ethylene oxide , bulk polymerization , materials science , organic chemistry , polymer , copolymer , methacrylic acid , physics , thermodynamics
The course of the 2,4,6‐trimethylbenzoyldiphenylphosphine oxide initiated free‐radical photopolymerization of an oligo(ethylene glycol) dimethacrylate ((EG) 23 DMA) in two oligo(ethylene glycol) dimethyl ethers ((EG) 3 DME and (EG) 11 DME) in the presence of LiCF 3 SO 3 has been studied by means of differential scanning calorimetry (DSC), FT‐Raman spectroscopy and sol‐gel analysis. In order to obtain the kinetical data of the fast photopolymerization, the photo‐DSC curves were corrected numerically. Both, the initial and the maximum polymerization rates were found to depend on the concentration of the monomer and the photo‐initiator with the order 2,5 and 0,2, respectively. Upon addition of LiCF 3 SO 3 , the polymerization rate is increased. Grafting reactions from (EG) 11 DME were observed resulting in its partially linking to the poly(methacrylate) network.