Difunctional acridinediones as photoinitiators of polymerization under UV and visible lights: Structural effects
Difunctional acridinediones as photoinitiators of polymerization under UV and visible lights: Structural effects
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DOI：
10.1016/j.polymer.2013.04.055
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发表时间：
2013-06
期刊：
影响因子：
4.6
通讯作者：
P. Xiao;F. Dumur;Mohamad-Ali Tehfe;B. Graff;D. Gigmes;J. Fouassier;J. Lalevée
中科院分区：
文献类型：
--
作者：
P. Xiao;F. Dumur;Mohamad-Ali Tehfe;B. Graff;D. Gigmes;J. Fouassier;J. Lalevée
制备了七种双官能吖啶二酮DAD，并研究了它们在UV/可见光（Xe-Hg灯; >330 nm）或可见光（卤素灯）曝光时与碘鎓盐（和任选的N-乙烯基咔唑）组合引发开环阳离子光聚合的能力。在DADs的结构效应和自由基阳离子的作用进行了概述。环氧树脂/丙烯酸酯共混物在一步混合固化中的阳离子和自由基光聚合导致互穿聚合物网络的形成。通过荧光、稳态光解、循环伏安、电子自旋共振自旋捕获和激光闪光光解技术研究了其光化学机理。
Seven difunctional acridinediones DAD were prepared and investigated for their abilities to initiate a ring-opening cationic photopolymerization in combination with an iodonium salt (and optionally N-vinylcarbazole) upon UV/visible light (Xe–Hg lamp; >330 nm) or visible light (halogen lamp) exposure. The structural effects in the DADs and the role of the radical cation are outlined. The cationic and radical photopolymerization of an epoxide/acrylate blend in a one-step hybrid cure leads to the formation of an interpenetrated polymer network. The photochemical mechanisms are studied by fluorescence, steady state photolysis, cyclic voltammetry, electron spin resonance spin trapping, and laser flash photolysis techniques.