Institute of Polymer and Dye Technology, Technical University of Lodz, ul Stefanowskiego 12/16, 90-924 Lodz, Poland.
Macromol Rapid Commun. 2011 Feb 2;32(3):295-301. doi: 10.1002/marc.201000531. Epub 2010 Nov 9.
Hybrid nanoparticles with a silica core and grafted poly(methyl methacrylate) (PMMA) or poly(n-butyl methacrylate) (PBMA) chains were prepared via activators generated by electron transfer for atom transfer radical polymerization (AGET ATRP) at room temperature under high pressure. Due to enhanced propagation rate constant and reduced termination rate constant for polymerizations conducted under high pressure, the rate of polymerization was increased, while preserving good control over polymerization when compared to ATRP under ambient pressure. Molecular weights of greater than 1 million were obtained. The PMMA and PBMA brushes exhibited "semi-diluted" or "diluted" brush architecture with the highest grafting densities ≈0.3 chain·nm(-2).
通过室温下在高压下通过电子转移引发原子转移自由基聚合（ARGET ATRP）制备具有二氧化硅核和接枝聚（甲基丙烯酸甲酯）（PMMA）或聚（正丁基甲基丙烯酸酯）（PBMA）链的杂化纳米粒子。由于在高压下进行的聚合的增长速率常数增加和终止速率常数降低，聚合速率增加，同时与常压下的 ATRP 相比，对聚合具有良好的控制。获得了大于 100 万的分子量。PMMA 和 PBMA 刷具有“半稀释”或“稀释”刷结构，最高接枝密度≈0.3 链·nm(-2)。
Macromol Rapid Commun. 2010-11-9
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