Chain Conformation in Polymer Nanocomposites with Uniformly Dispersed Nanoparticles

被引：75

作者：

Crawford, M. K. ^{[1
]}

Smalley, R. J. ^{[1
]}

Cohen, G. ^{[1
]}

Hogan, B. ^{[1
]}

Wood, B. ^{[1
]}

Kumar, S. K. ^{[2
]}

Melnichenko, Y. B. ^{[3
]}

He, L. ^{[3
]}

Guise, W. ^{[1
,4
]}

Hammouda, B. ^{[5
]}

机构：

[1] DuPont Co Inc, Cent Res & Dev, Wilmington, DE 19880 USA

[2] Columbia Univ, Dept Chem Engn, New York, NY 10027 USA

[3] Oak Ridge Natl Lab, Biol & Soft Matter Div, Oak Ridge, TN 37831 USA

[4] Argonne Natl Lab, Adv Photon Source, Argonne, IL 60439 USA

[5] NIST, Ctr Neutron Res, Gaithersburg, MD 20879 USA

来源：

PHYSICAL REVIEW LETTERS | 2013年 / 110卷 / 19期

基金：

美国国家科学基金会;

关键词：

MONTE-CARLO; REINFORCEMENT; SIMULATIONS; DIMENSIONS; PARTICLES;

D O I：

10.1103/PhysRevLett.110.196001

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The effect of nanoparticles (NP) on chain dimensions in polymer melts has been the source of considerable theoretical and experimental controversy. We exploit our ability to ensure a spatially uniform dispersion of 13 nm silica NPs miscible in polystyrene melts, together with neutron scattering, x-ray scattering, and transmission electron microscopy, to show that there is no measurable change in the polymer size in miscible mixtures, regardless of the relative sizes of the chains and the nanoparticles, and for NP loadings as high as 32.7 vol%. Our results provide a firm basis from which to understand the properties of polymer nanocomposites.

引用

页数：5

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