Scanning electric potential microscopy imaging of polymers: electrical charge distribution in dielectrics

被引：40

作者：

Galembeck, A

Costa, CAR

da Silva, MCVM

Souza, EF

Galembeck, F

机构：

[1] Univ Estadual Campinas, Inst Quim, UNICAMP, BR-13083970 Campinas, SP, Brazil

[2] Univ Fed Pernambuco, Dept Quim Fundamental, Recife, PE, Brazil

[3] Pontificia Univ Catolica Campinas, Inst Ciencias Biol & Quim, Campinas, SP, Brazil

来源：

POLYMER | 2001年 / 42卷 / 11期

基金：

巴西圣保罗研究基金会;

关键词：

electric potential images; polymer surfaces; micro- and nanoscopic scales;

D O I：

10.1016/S0032-3861(00)00921-6

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Scanning electric potential images of polymer surfaces are presented and compared to standard non-contact AFM images. Samples used were a latex film with a well-known distribution of chemical constituents and thus of ionic electrical charges, as well as finished industrial products. Topography and electric potential images show a variable degree of correlation, thus evidencing the independence of topographic and electrical features of the samples, in the micro- and nanoscopic scales. Domains with non-zero negative or positive electric potentials are observed, extending for a few tenths of a micron and creating an electric mosaic in the otherwise neutral polymers. Large electric potential gradients are observed, e.g. in a HDPE film. (C) 2001 Elsevier Science Ltd. All rights reserved.

引用

页码：4845 / 4851

页数：7

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