Surface-Initiated Nitroxide-Mediated Polymerization from Ordered Mesoporous Silica

被引：62

作者：

Blas, Helene ^{[3
,4
]}

Save, Maud ^{[1
,2
]}

Boissiere, Cedric ^{[5
,6
]}

Sanchez, Clement ^{[5
,6
]}

Charleux, Bernadette ^{[7
]}

机构：

[1] Univ Pau & Pays Adour, IPREM Grp Phys & Chim Polymeres, F-64053 Pau 9, France

[2] CNRS, UMR 5254, F-64053 Pau 9, France

[3] UPMC, Lab Chim Polymeres, F-75252 Paris 05, France

[4] Univ Paris 06, CNRS, UMR 7610, F-75252 Paris 05, France

[5] UPMC, Lab Chim Mat Condensee, Coll France, F-75231 Paris 05, France

[6] Univ Paris 06, CNRS, UMR 7574, F-75231 Paris 05, France

[7] Univ Lyon 1, CPE Lyon, CNRS UMR 5265,Team LCPP Bat 308F, Lab Chim Catalyse Polymeres & Procedes C2P2, F-69616 Villeurbanne, France

来源：

MACROMOLECULES | 2011年 / 44卷 / 08期

关键词：

TRANSFER RADICAL POLYMERIZATION; FRAGMENTATION CHAIN TRANSFER; MIXED HOMOPOLYMER BRUSHES; METHYL-METHACRYLATE; MOLECULAR-WEIGHT; HYBRID NANOPARTICLES; POLYSTYRENE BRUSHES; CONTROLLED GROWTH; STYRENE; PARTICLES;

D O I：

10.1021/ma200354r

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

This work describes, for the first time, the nitroxide-mediated polymerization (NMP) of styrene initiated from an SG1-based alkoxyamine grafted on both the inner and outer surfaces of ordered mesoporous silica (OMS) particles. The OMS particles with various morphologies were synthesized by sol-gel chemistry in the presence of a surfactant template. The initiator derived from the BlocBuilder alkoxyamine was covalently grafted via a dimethylethoxysilane functional group. The polymerizations were conducted in the presence of a free alkoxyamine with chemical structure similar to that of the grafted one. The monomer conversion was monitored by H-1 NMR analysis and the concentration of released nitroxide could be calculated, providing an estimation of the fraction of dead chains. The weight fraction of grafted polymer and the molar mass distributions of the free and grafted chains were determined. From this information, an effect of the OMS particle structure on the outcome of the polymerization could be evaluated.

引用

页码：2577 / 2588

页数：12

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