亚微米级核壳乳胶颗粒的形态学：一项电子显微镜研究。

The morphology of submicronsized core-shell latex particles: an electron microscopy study.

作者信息

Gaillard Cédric, Fuchs Gilbert, Plummer Christopher J G, Stadelmann Pierre A

机构信息

Centre Interdisciplinaire de Microscopie Electronique (CIME), EPFL, CH-1015 Lausanne, Switzerland.

出版信息

Micron. 2007;38(5):522-35. doi: 10.1016/j.micron.2006.07.023. Epub 2006 Sep 7.

DOI:10.1016/j.micron.2006.07.023

PMID:17045482

Abstract

The core-shell structure of a range of acrylic-acrylic latexes has been investigated by combining different specimen preparation methods with transmission electron microscopy (TEM), dark-field scanning transmission electron microscopy (DSTEM) and low-voltage scanning electron microscopy (LV-SEM), including the first reported use of LV-SEM to observe composite latex particles at ambient and subambient temperatures. Spin-coating of liquid latex dispersions directly onto TEM grids or SEM stubs is shown to be a relatively straightforward mean of avoiding film formation during specimen preparation. In conjunction with double staining techniques, it has been found to be particularly convenient for characterizing the fine structure of particles with diameters down to below 100 nm.

摘要

通过将不同的样品制备方法与透射电子显微镜（TEM）、暗场扫描透射电子显微镜（DSTEM）和低电压扫描电子显微镜（LV-SEM）相结合，研究了一系列丙烯酸-丙烯酸乳胶的核壳结构，包括首次报道使用LV-SEM在环境温度和低于环境温度下观察复合乳胶颗粒。将液体乳胶分散体直接旋涂到TEM网格或SEM短柱上，被证明是在样品制备过程中避免形成薄膜的一种相对简单的方法。结合双重染色技术，已发现它对于表征直径低至100nm以下的颗粒的精细结构特别方便。