Controlled radical photopolymerization of n-butyl methacrylate（n-BMA） mediated by 4-hydroxy-2,2,6,6-tetramethyl-1-piperidinyloxy（HTEMPO） was carried out in bulk at ambient temperature. It was found that obtained n...Controlled radical photopolymerization of n-butyl methacrylate（n-BMA） mediated by 4-hydroxy-2,2,6,6-tetramethyl-1-piperidinyloxy（HTEMPO） was carried out in bulk at ambient temperature. It was found that obtained n-BMA homopolymers exhibited narrow polydispersities of around 1.4, which was characterized by GPC. Plots of number-average molecular weight vs. conversion and Ln（[Mo]/[M]） vs. time were liner respectively, indicating that was a controlled photopolymerization.展开更多
1 Results Living free radical polymerization has undergone tremendous advancement in the past few years, particularly in the area of nitroxide mediated free radical polymerization. In 1980s, the use of nitroxyl free r...1 Results Living free radical polymerization has undergone tremendous advancement in the past few years, particularly in the area of nitroxide mediated free radical polymerization. In 1980s, the use of nitroxyl free radicals such as 2,2,6,6-tetramethylpiperidinyl-1-oxyl(TEMPO) to moderate free radical polymerizations was first reported by Rizzardo,et al[1], more and more people began to interested in the polymerization methods which controlled by nitroxide stable free radicals. Recently, some people int...展开更多
基金Financially supports from the National Natural Science Foundation of China(No.20274023 and 20474036)Guangdong Province Natural Science Foundation(No.021241)are gratefully acknowledged.
文摘Controlled radical photopolymerization of n-butyl methacrylate（n-BMA） mediated by 4-hydroxy-2,2,6,6-tetramethyl-1-piperidinyloxy（HTEMPO） was carried out in bulk at ambient temperature. It was found that obtained n-BMA homopolymers exhibited narrow polydispersities of around 1.4, which was characterized by GPC. Plots of number-average molecular weight vs. conversion and Ln（[Mo]/[M]） vs. time were liner respectively, indicating that was a controlled photopolymerization.
文摘1 Results Living free radical polymerization has undergone tremendous advancement in the past few years, particularly in the area of nitroxide mediated free radical polymerization. In 1980s, the use of nitroxyl free radicals such as 2,2,6,6-tetramethylpiperidinyl-1-oxyl(TEMPO) to moderate free radical polymerizations was first reported by Rizzardo,et al[1], more and more people began to interested in the polymerization methods which controlled by nitroxide stable free radicals. Recently, some people int...
