Abstract
Photoinitiating behaviors of oligo(α-aminoketones) (OAK) macrophotoinitiator containing aminoalkylphenone group on free-radical photopolymerization had been investigated by differential photo-calorimetry (DPC). The macrophotoinitiator showed comparative performance with those commercial photoinitiators with lower molecular mass. The effect of photoinitiator concentrations and UV intensity on the polymerization rate was investigated, and the value of exponential factor was found to be 0.5 at the beginning of polymerization, suggesting that the photopolymerization initiated by OAK followed biradical termination mechanism. Photosensitizer isopropyl thioxanthone (ITX) and oxygen severely restricted the polymerization in these systems. Photoinitiators with lower molecular mass showed higher reactivity than those with higher molecular mass.
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Ye, G., Zhou, H., Yang, J. et al. Photoinitiating behavior of macrophotoinitiator containing aminoalkylphenone group. J Therm Anal Calorim 85, 771–777 (2006). https://doi.org/10.1007/s10973-005-7271-x
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DOI: https://doi.org/10.1007/s10973-005-7271-x