Observation of size oscillations in poly(ethylene) glycol/electrolyte composite microparticles

被引：8

作者：

Ford, JV ^{[1
]}

Sumpter, BG ^{[1
]}

Noid, DW ^{[1
]}

Barnes, MD ^{[1
]}

机构：

[1] Oak Ridge Natl Lab, Div Chem & Analyt Sci, Opt Spect Grp, Oak Ridge, TN 37831 USA

来源：

CHEMICAL PHYSICS LETTERS | 2000年 / 316卷 / 3-4期

关键词：

D O I：

10.1016/S0009-2614(99)01332-9

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Two-dimensional optical diffraction in polymer/electrolyte composite microparticles has revealed interesting structural/morphological dynamics that occur on a time scale of several minutes. In addition to its utility as a qualitative probe of material homogeneity and phase-separation behavior in composite systems, PEG/NaCl particles probed by optical diffraction exhibit particle size oscillation (up to 100 nanometers peak-to-peak). The specific behavior observed depends on the concentration and nature of the electrolyte in the PEG host particle. These results demonstrate the feasibility of 2-D angular scattering in polymer composite particles as a means for probing structural phase transitions in ultrasmall (10-500 femtoliters) confined volumes. (C) 2000 Elsevier Science B.V. All rights reserved.

引用

页码：181 / 185

页数：5

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