Shape evolution control of phase-separated colloidal nanoparticles

被引：13

作者：

Corten, Cathrin C. ^{[1
]}

Urban, Marek W. ^{[1
]}

机构：

[1] Univ So Mississippi, Sch Polymers & High Performance Mat, Hattiesburg, MS 39406 USA

来源：

POLYMER CHEMISTRY | 2011年 / 2卷 / 01期

关键词：

FREE-RADICAL POLYMERIZATION; PARTICLE MORPHOLOGY; SURFACE; DISPERSIONS;

D O I：

10.1039/c0py00220h

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

These studies illustrate controlled shape synthesis of two distinct phase-separated copolymers within one colloidal nanoparticle which consists of poly(methylmethacrylate) (p-MMA)/n-butylacrylate (nBA) and poly(nBA)/pentafluorostyrene (p-PFS) phases. Using sequential free radical polymerization, particle morphologies ranging from acorn to ellipsoidal, core-shell, and spherical were produced by adjusting the glass transition temperature (T-g) via compositional gradients during copolymerization. These studies show for the first time that in order to achieve desirable asymmetric particle shapes, the T-g as well as interfacial surface tension between two copolymers within one nanoparticle should be maintained during and after polymerization.

引用

页码：244 / 250

页数：7

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