کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1401108 984676 2008 12 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Direct ether formation of semibenzopinacol moieties in a photopolymerization system featured constant intensity of absorbed light
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی آلی
پیش نمایش صفحه اول مقاله
Direct ether formation of semibenzopinacol moieties in a photopolymerization system featured constant intensity of absorbed light
چکیده انگلیسی

In a special photopolymerization reaction system, the reactivity of semibenzopinacol moieties was examined. Structural analysis by 1D/2D NMR showed that the hydroxyl groups of the semibenzopinacol moieties after hydrogen abstraction reaction have reacted directly to form a new ether structure instead of the cleavage of a C–C bond in a photopolymerization system featured constant intensity of absorbed light when there is only vinyl acetate added. In order to clarify this new reaction, comparative experiments and several characterization methods were applied. Results revealed that poly(vinyl acetate) radicals initiated by UV irradiation or benzophenone/triethanolamine system, and UV irradiation under or above 300 nm, were two necessary factors for the formation of the new ether structure from hydroxyl groups of semibenzopinacol moieties.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: European Polymer Journal - Volume 44, Issue 1, January 2008, Pages 244–255
نویسندگان
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