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JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY · 2013 ·Vol. 51 ·期 8 ·1690-1694 · IF 3.543

Ambient temperature copper-mediated living radical polymerization of acrylonitrile with Me6TREN as the reducing agent

Yun-Hai Yu,Xiao-Hui Liu,Di Jia,Bo-Wen Cheng,Yuan-Lin Ren,Fei-Jun Zhang,Hui-Na Li,Peng Chen,Shan Xie

Graphical A universal high reactive ligand, Me 6 TREN, was successfully explored as the reducing agent for the ambient temperature copper-mediated LRP of AN. The key to success is ascribed to the optimized Me 6 TREN amount and reaction conditions employed, producing ideal living free radical polymerization characteristics. The very high chain-end functionality of the resultant polymer has been confirmed by GPC and 1 H NMR analyses as well as the chain-extension reaction.

研究领域: 高分子化学 · 聚合反应 · 功能高分子 · 可控自由基聚合 · 材料化学

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JOURNAL OF APPLIED POLYMER SCIENCE · 2015 ·Vol. 132 ·期 25 · IF 1.768

Rapid ambient temperature living radical polymerization of methyl methacrylate and styrene utilizing sodium hypophosphite as reducing agent

Xiao-Hui Liu,Fei-Jun Zhang,Hui-Na Li,Xiao-Hui Hu,Wen-Li Di,Shuang Zhao

A facile, safe, and inexpensive reducing agent, sodium hypophosphite (NaH 2 PO 2 ·H 2 O), has been successfully used to perform ambient temperature living radical polymerizations of methyl methacrylate (MMA) and styrene (St). The rapid radical polymerizations were readily obtained at 25°C, i.e., MMA reached a conversion of ca 90% after 2.5 h, and St reached a conversion of ca 80% after 40 h. The polymerizations of MMA and St exhibited excellent living/controlled nature, as evidenced by pseudo first-order kinetics of polymerization, linear evolution of molecular weights with increasing monomer conversions, and narrow molecular weight distributions. The various experimental parameters—ligand, solvent, and molar ratio of NaH 2 PO 2 ·H 2 O to CuSO 4 ·5H 2 O—were varied to improve the control of polymerization, molecular weight, and molecular weight distribution. 1 H NMR analyses and chain-extension reactions confirm the high chain-end functionality of the resultant poly(methyl methacrylate) and polystyrene. © 2015 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2015 , 132 , 42123.

研究领域: 高分子化学 · 聚合反应工程 · 功能高分子材料 · 可控/活性聚合 · 绿色合成方法

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Ambient temperature copper-mediated living radical polymerization of acrylonitrile with Me6TREN as the reducing agent

Rapid ambient temperature living radical polymerization of methyl methacrylate and styrene utilizing sodium hypophosphite as reducing agent