Silica-Polymethacrylate Hybrid Particles Synthesized Using High-Pressure Atom Transfer Radical Polymerization

被引：62

作者：

Pietrasik, Joanna ^{[1
]}

Hui, Chin Ming ^{[2
]}

Chaladaj, Wojciech ^{[3
]}

Dong, Hongchen ^{[2
]}

Choi, Jihoon ^{[4
]}

Jurczak, Janusz ^{[3
]}

Bockstaller, Michael R. ^{[4
]}

Matyjaszewski, Krzysztof ^{[2
]}

机构：

[1] Tech Univ Lodz, Inst Polymer & Dye Technol, PL-90924 Lodz, Poland

[2] Carnegie Mellon Univ, Dept Chem, Ctr Macromol Engn, Pittsburgh, PA 15213 USA

[3] Polish Acad Sci, Inst Organ Chem, PL-01224 Warsaw, Poland

[4] Carnegie Mellon Univ, Dept Mat Sci & Engn, Pittsburgh, PA 15213 USA

来源：

MACROMOLECULAR RAPID COMMUNICATIONS | 2011年 / 32卷 / 03期

基金：

美国国家科学基金会;

关键词：

atom transfer radical polymerization (ATRP); high pressure; hybrid particles; polymer brushes; N-BUTYL ACRYLATE; ELECTRON-TRANSFER; RAFT-POLYMERIZATION; REACTION VOLUMES; AGET ATRP; NANOPARTICLES; BRUSHES; NANOCOMPOSITES; MINIEMULSION; COMPOSITES;

D O I：

10.1002/marc.201000531

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

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 approximate to 0.3 chain.nm(-2).

引用

页码：295 / 301

页数：7

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