Citation: . PHOTOCURING STUDY OF NEW DENTAL RESINS BASED ON MULTIFUNCTIONAL ACRYLIC ISOCYANURATE BY PHOTOCALORIMETRY[J]. Chinese Journal of Polymer Science, ;1999, 17(5): 411-415. shu

PHOTOCURING STUDY OF NEW DENTAL RESINS BASED ON MULTIFUNCTIONAL ACRYLIC ISOCYANURATE BY PHOTOCALORIMETRY

Received Date: 26 February 1998

Photocuring of new dental resins composed of tri(2-hydroxyethyl) isocyanurate triacrylate (THITA)alone and its mixtures with trimethylolpropane triacrylate (TMPTA) or pentaerythritol triacrylate (PETA)initiated by camphorquinone/amine system was studied by photocalorimetry. Among several different aminesas coinitiators, 2-ethyl-4-dimethylaminobenzoate (AM-3), N,N-dimethylbenzylamine (AM-5) and 2,4,6-[tri-(dimethylaminomethyl)] phenol (AM-6) are most effective. Upon irradiation, photopolymerization can occur immediately and no induction period appears in N2 nor in air.Comparing the THITA/TMPTA and THITA/PETA mixtures,the parameters of photopolymerization and hardness of photocured samples show a small difference and only change slightly with varying molar ratios of mixture.In the presence of inorganic filler,the hardness of photocuring resins is almost the same as that for commercial products.
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