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Crosslinking copolymerization of epoxy methacrylates as studied by Fourier transform Raman spectroscopy

โœ Scribed by B. Sandner; S. Kammer; S. Wartewig

Publisher
Elsevier Science
Year
1996
Tongue
English
Weight
573 KB
Volume
37
Category
Article
ISSN
0032-3861

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โœฆ Synopsis

Bisphenol-A-bis(2-hydroxypropyl methacrylate) (BisGMA) was copolymerized with methyl derivatives of styrene initiated by di-tert-butyl peroxide in the presence of 76wt% of silica filler at 150ยฐ-200ยฐC. The Raman bands of the C=C stretching vibrations at 1630 and 1637cm -1 were found to be suitable for determining the conversion of C=C double bonds of the styrene and the methacrylate monomer simultaneously in dependence on the copolymerization time. The C=O Raman band of the BisGMA monomer at 1702 cm -1 vanishes during the copolymerization, whereas the intensity of the C=O band at 1718 cm -1 decreases.

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