Synthesis of Polymer-Derived Ceramic Si(B)CN-Carbon Nanotube Composite by Microwave-Induced Interfacial Polarization

被引：43

作者：

Bhandavat, R. ^{[1
]}

Kuhn, W. ^{[2
]}

Mansfield, E. ^{[3
]}

Lehman, J. ^{[3
]}

Singh, G. ^{[1
]}

机构：

[1] Kansas State Univ, Dept Mech & Nucl Engn, Manhattan, KS 66506 USA

[2] Kansas State Univ, Dept Elect & Comp Engn, Manhattan, KS 66506 USA

[3] Natl Inst Stand & Technol, Boulder, CO 80305 USA

来源：

ACS APPLIED MATERIALS & INTERFACES | 2012年 / 4卷 / 01期

基金：

美国国家科学基金会;

关键词：

microwave; polymer-derived ceramic; Si(B)CN; carbon nanotubes; WALLED CARBON NANOTUBES; HIGH-TEMPERATURE; SILICON-CARBIDE; FUNCTIONALIZATION; PURIFICATION; ABSORPTION;

D O I：

10.1021/am201358s

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

We demonstrate synthesis of a polymer-derived ceramic (PDC)-multiwall carbon nanotube (MWCNT) composite using microwave irradiation at 2.45 GHz. The process takes about 10 min of microwave irradiation for the polymer-to-ceramic conversion. The successful conversion of polymer coated carbon nanotubes to ceramic composite is chemically ascertained by Fourier transform-infrared and X-ray photoelectron spectroscopy and physically by thermogravimetric analysis and transmission electron microscopy characterization. Frequency dependent dielectric measurements in the S-Band (300 MHz to 3 GHz) were studied to quantify the extent of microwave-CNT interaction and the degree of selective heating available at the MWCNT-polymer interface. Experimentally obtained return loss of the incident microwaves in the specimen explains the reason for heat generation. The temperature-dependent permittivity of polar molecules further strengthens the argument of internal heat generation.

引用

页码：11 / 16

页数：6

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