Effect of UV light source intensity and spectral distribution on the photopolymerisation reactions of a multifunctional acrylated monomer

摘要

The goal of this study was to examine the possibilities of preparing thin surface spatial crosslinked polymer films by UV curing using 1,6-hexandioldiacrylate as a multifunctional monomer and 1-hydroxycyclohexyl acetophenone as a radical photoinitiator. Different UV light sources were used with different light spectral distributions and light intensities. It is found that the light source characterised at least by a particular overlap of its emission spectrum with the photoinitator's absorption spectrum is the best system used for effective cure. Low polymerisation rate achieved in the case of smaller overlap of spectrums is easy to regulate by extending the energy of the emitted light.