ATRP of MMA with ppm Levels of Iron Catalyst

被引:93
作者
Wang, Yu [1 ]
Zhang, Yaozhong [1 ]
Parker, Bernard [1 ]
Matyjaszewski, Krzysztof [1 ]
机构
[1] Carnegie Mellon Univ, Dept Chem, Ctr Macromol Engn, Pittsburgh, PA 15213 USA
基金
美国安德鲁·梅隆基金会; 美国国家科学基金会;
关键词
TRANSFER RADICAL POLYMERIZATION; MEDIATED ICAR ATRP; METHYL-METHACRYLATE; ELECTRON-TRANSFER; ARGET ATRP; AGET ATRP; STYRENE; LIGANDS; COPOLYMERS; COMPLEX;
D O I
10.1021/ma200771r
中图分类号
O63 [高分子化学(高聚物)];
学科分类号
070305 ; 080501 ; 081704 ;
摘要
Successful atom transfer radical polymerization (ATRP) of methyl methacrylate (MMA) was carried out with ppm amount of iron bromide at 60°C in the presence of Fe0 as supplemental activator and reducing agent in a supplemental activators and reducing agents (SARA)-ATRP or azobis(isobutyronitrile)(AIBN) as initiator in an initiators for continuous activator regeneration (ICAR)-ATRP. A dark red stock solution of 1% Fe IIIBr3 in anisole was prepared and stored in air for use in the experiments. The molecular weight of the poly(methyl methacrylate) (PMMA) prepared agreed well with theoretical values. The polymerization was also successful solely in the presence of Fe0 wire, without initially added FeIIIBr3. Because of the limited solubility of FeIIBr2 in anisole/MMA solution, the polymerization of MMA reached only 9% conversion after 48 h in the absence of TBABr with ratio of reagents. In both cases well-controlled polymerizations were achieved.
引用
收藏
页码:4022 / 4025
页数:4
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