Controlling the Location of Nanoparticles in Polymer Blends by Tuning the Length and End Group of Polymer Brushes

被引：68
作者：
Chung, Hyun-Joong [1 ,2 ]
Kim, Jinyong [1 ,2 ]
Ohno, Kohji [3 ]
Composto, Russell J. [1 ,2 ]
机构：
[1] Univ Penn, Dept Mat Sci & Engn, Philadelphia, PA 19104 USA
[2] Univ Penn, Res Struct Matter Lab, Philadelphia, PA 19104 USA
[3] Kyoto Univ, Inst Chem Res, Kyoto 6110011, Japan
来源：
ACS MACRO LETTERS | 2012年 / 1卷 / 01期
基金：
美国国家科学基金会;
关键词：
PHASE-SEPARATION DYNAMICS; MORPHOLOGY; COALESCENCE; PARTICLES; EMULSIONS; NANOCOMPOSITES; ORGANIZATION; COMPOSITES; SIMULATION; EVOLUTION;
D O I：
10.1021/mz200068p
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 paper investigates controlling the location of nanoparticles (NPs) in a phase-separated polymer blend of deuterated poly(methyl methyl methacrylate) (dPMMA) and poly-(styrene-ran-acrylonitrile) (SAN). Silica NPs are grafted with PMMA brushes having molecular weights of 1800, 21000, and 160000 at fixed grafting density. Using ion beam milling combined with SEM imaging, NP location and morphology are investigated for blends containing 10 wt % NP. With increasing brush length, the NPs are found to segregate to the dPMMA/SAN interface, partition between the interface and dPMMA. phase, or locate in the dPMMA phase, respectively.
引用
收藏
页码：252 / 256
页数：5
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