Electrical Properties of Well-Dispersed Nanopolyaniline/Epoxy Hybrids Prepared Using an Absorption-Transferring Process

被引：54

作者：

Liu, Cheng-Dar ^{[1
]}

Lee, Sung-Nung ^{[3
]}

Ho, Chao-Hsien ^{[3
,4
]}

Han, Jin-Lin ^{[5
]}

Hsieh, Kuo-Huang ^{[1
,2
]}

机构：

[1] Natl Taiwan Univ, Inst Polymer Sci & Engn, Taipei 106, Taiwan

[2] Natl Taiwan Univ, Dept Chem Engn, Taipei 106, Taiwan

[3] Fu Jen Catholic Univ, Dept Chem, Taipei 242, Taiwan

[4] Lunghwa Univ Sci & Technol, Dept Chem & Mat Engn, Tao Yuan 33306, Taiwan

[5] Natl ILan Univ, Dept Chem & Mat Engn, Ilan 260, Taiwan

来源：

JOURNAL OF PHYSICAL CHEMISTRY C | 2008年 / 112卷 / 41期

关键词：

D O I：

10.1021/jp803437v

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：

Novel polyaniline (PANI)/epoxy hybrids have been fabricated using an absorption-transferring process in which no organic solvent is involved. An epoxy prepolymer cured by aniline monomer (DGEBA-aniline) was added to a freshly prepared PANT nanoparticles (NPs) aqueous solution with vigorous agitation and heating (ca. 90 degrees C). The PANT NPs were absorbed on the surface of epoxy droplet and then transferred into the whole droplet. The microstructures of the product PANT/epoxy hybrids, characterized using scanning electron microscopy, featured well-dispersed PANT NPs (ca. 40 similar to 60 nm) within epoxy matrixes; no large aggregates were observed. The hybrids exhibited huge negative permittivities; the electromagnetic interference shielding efficiency in an electric field at low frequency (100-1000 MHz) was ca. 30-60 dB. The well-dispersed PANT NPs not only provided a continuous conducting network but also a higher level of charge delocalization.

引用

页码：15956 / 15960

页数：5

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