4-Benzophenone methoxyl methacrylate (BPMM) and 3

4-methylenedioxybenzene methoxyl methacrylate (MDBMM) were synthesized and the photoinitiating effect of BPMM/MDBMM combinations was evaluated as well.Real time infrared spectroscopy (RTIR) with a horizontal sample holder was used to record the polymerization kinetics of UDMA/TEGDMA (70/30 W/W) initiated by BPMM/MDBMM.Dynamic mechanical analyzer (DMA) was used to study the mechanical properties of the cured samples.The results showed that

with increasing of the amount of MDBMM

the rate of polymerization (Rp) and final double bond conversion (Pf) increased.However

with the increase of BPMM concentrations

an optimum BPMM concentration occurred (0.8%).Comparison with the conventional BP/EDMAB initiator system under the same curing conditions indicates that BPMM/MDBMM shows a lower initiating reactivity

but a comparable Pf

Tg and the storage modulus around 37℃ of the products.Moreover

as a derivative of natural component from black peppers MDBMM is more promising in biomedical applications.