The Preparation and Characterization of Carboxylic Acid-Coated Silica Nanoparticles

被引：38
作者：
Cash, Brandon M.
Wang, Lei
Benicewicz, Brian C. [1 ]
机构：
[1] Univ S Carolina, Dept Chem & Biochem, Columbia, SC 29208 USA
来源：
JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY | 2012年 / 50卷 / 13期
基金：
美国国家科学基金会;
关键词：
living polymerization; nanocomposites; nanoparticles; reversible addition fragmentation chain transfer (RAFT); LIVING RADICAL POLYMERIZATION; FRAGMENTATION CHAIN TRANSFER; BLOCK-COPOLYMERS; RAFT; BRUSHES; SURFACE; POLYMERS; KINETICS; ROUTE;
D O I：
10.1002/pola.26029
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
The preparation of carboxylic acid-coated silica nanoparticles was investigated. A monolayer of carboxylic acid residues with controllable graft density was anchored to the nanoparticle by a ring-opening reaction with succinic anhydride. Poly(methacrylic acid) [poly(MAA)] grafted nanoparticles were prepared via a polymerization-deprotection strategy. Tert-butyl methacrylate was polymerized from the surface of silica nanoparticles in a predictable manner and with excellent control over the molecular weight distribution. Subsequent removal of the tert-butyl group resulted in poly (MAA) grafted nanoparticles. The polymer nanoparticles were also functionalized with dyes, which may be useful in tracking the particles in biological systems. (C) 2012 Wiley Periodicals, Inc. J Polym Sci Part A: Polym Chem 50: 2533-2540, 2012
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收藏
页码：2533 / 2540
页数：8
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