Influence of preparation procedure on the conductivity and transparency of SWCNT-polymer nanocomposites

被引：57

作者：

Hernandez, J. J. ^{[1
]}

Garcia-Gutierrez, M. C. ^{[1
]}

Nogales, A. ^{[1
]}

Rueda, D. R. ^{[1
]}

Kwiatkowska, M. ^{[2
]}

Szymczyk, A. ^{[2
]}

Roslaniec, Z. ^{[2
]}

Concheso, A. ^{[3
]}

Guinea, I. ^{[3
]}

Ezquerra, T. A. ^{[1
]}

机构：

[1] CSIC, Inst Estructura Mat, Madrid 28806, Spain

[2] W Pomeranian Univ Technol, Inst Mat Sci & Engn, PL-70310 Szczecin, Poland

[3] Grp Antolin Ingn, E-09007 Burgos, Spain

来源：

COMPOSITES SCIENCE AND TECHNOLOGY | 2009年 / 69卷 / 11-12期

关键词：

Carbon nanotubes; Polymer nanocomposites; Electrical conductivity; Transparency; WALL CARBON NANOTUBES; LOW PERCOLATION-THRESHOLD; X-RAY-SCATTERING; ELECTRICAL-CONDUCTIVITY; POLY(BUTYLENE TEREPHTHALATE); EPOXY COMPOSITES; AC CONDUCTIVITY; POLY(ETHYLENE-TEREPHTHALATE); NETWORKS; FILMS;

D O I：

10.1016/j.compscitech.2009.04.002

中图分类号：

TB33 [复合材料];

学科分类号：

摘要：

Nanostructuring of polymers has opened up new perspectives for multi-functional materials. In this paper we report on the feasibility of preparing transparent and conducting polymer nanocomposites based on poly(ethylene terephthalate) (PET) and single wall carbon nanotubes (SWCNT) as additive. Polymer nanocomposites were prepared by two different methods, direct mixing in the melt (DM) and in situ polymerization (I-SP). Samples prepared by DM show a low percolation threshold for electric conductivity, phi(c) = 0.024 wt.% of SWCNT, and are more transparent to light than samples prepared by I-SP. Particularly, a DM composite with composition just above phi(c) exhibits a conductivity of similar to 10(-8) S/cm and about 70% of transmittance to visible light. Better electrical and optical properties of nanocomposites prepared by DM in relation to those prepared by I-SP can be explained by assuming that a certain level of aggregation of SWCNT favors the formation of electrical pathways and reduces the number of scatters of light, hence favoring the transmittance of the visible light through these materials. (C) 2009 Elsevier Ltd. All rights reserved.

引用

页码：1867 / 1872

页数：6

共 34 条

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