Structure and properties of metal-free conductive tracks on polyethylene/multiwalled carbon nanotube composites as obtained by laser stimulated percolation

被引：30

作者：

Cesano, Federico ^{[1
,2
,3
]}

Rattalino, Ismael ^{[4
]}

Demarchi, Danilo ^{[4
]}

Bardelli, Fabrizio ^{[1
,2
,3
]}

Sanginario, Alessandro ^{[4
]}

Gianturco, Annamaria ^{[5
]}

Veca, Antonino ^{[5
]}

Viazzi, Claudio ^{[6
]}

Castelli, Paolo ^{[6
]}

Scarano, Domenica ^{[1
,2
,3
]}

Zecchina, Adriano ^{[1
,2
,3
]}

机构：

[1] Univ Turin, Dept Chem, I-10125 Turin, Italy

[2] Univ Turin, NIS Ctr Excellence, I-10125 Turin, Italy

[3] Univ Turin, INSTM Ctr Riferimento, I-10125 Turin, Italy

[4] Politecn Torino, Dept Elect & Telecommun, I-10129 Turin, Italy

[5] Ctr Ric Fiat SCpA, I-10043 Orbassano, Italy

[6] RTM Laser Technol SpA, I-10011 Agile, Italy

来源：

CARBON | 2013年 / 61卷

关键词：

MECHANICAL-PROPERTIES; RAMAN-SPECTRA; HIGH-DENSITY; NANOCOMPOSITES; FILMS; SPECTROSCOPY; MWCNT; SEM;

D O I：

10.1016/j.carbon.2013.04.066

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070305 [高分子化学与物理];

摘要：

The fabrication and characterization of conductive tracks by laser irradiation on non-conductive multiwalled carbon nanotube/polyethylene (MWCNT/HDPE) composites is reported. Along the irradiated paths the percolation of MWCNTs is occurring, as demonstrated by field emission scanning electron and atomic force microscopies. An increment of the track conductivity of several orders of magnitude is documented by single pass Kelvin probe force and current sensing atomic force microscopies, together with electrical measurements. The structure of conductive paths has been estimated by secondary electron charge contrast imaging. The investigation has been developed from basic characterization up to industrial scale manufacturing. The method is fast, flexible and innovative, because: (i) highly adherent tracks of any selected pattern on a low cast material can be obtained, (ii) the tracks are metal-free, a fact rendering the composite fully recyclable and (iii) the irradiated materials have application for electrical signals transport; (iv) the tracks are also characterized by piezoresistive properties so allowing their employment as pressure sensors. (C) 2013 Elsevier Ltd. All rights reserved.

引用

页码：63 / 71

页数：9

共 41 条

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