Raman spectroscopic study of gamma radiation-initiated polymerization of diethylene glycol dimethacrylate in different solvents

Mahmood, Malik H. and Himics, László and Váczi, Tamás and Rigó, István and Holomb, Roman and Beiler, Barbara and Veres, Miklós (2021) Raman spectroscopic study of gamma radiation-initiated polymerization of diethylene glycol dimethacrylate in different solvents. JOURNAL OF RAMAN SPECTROSCOPY, 52 (10). pp. 1735-1743. ISSN 0377-0486

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Abstract

In this work, the degree of conversion and polymerization kinetics of diethylene glycol dimethacrylate (DEGDMA) monomer in different solvents upon gamma irradiation with different doses have been studied by Raman spectroscopy and mass difference measurements. Density functional theory calculations were performed on the monomer and the crosslinked structure to obtain the assignment of Raman peaks to specific bonds. The evolution of the bonding configuration of the structure with dose and the composition of the monomer mixture was investigated. The dependence of the polymerization rate on the solvent type was explained by the mechanism of the polymerization affected by the relative solubility of the components of the monomer mixture. Raman measurements revealed also that there are not fully crosslinked monomer molecules in the polymer matrix.

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