Comparisons of MWCNTs and acidified process by HNO(3) on thermal stability by DSC and TG-FTIR

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Title:	Comparisons of MWCNTs and acidified process by HNO(3) on thermal stability by DSC and TG-FTIR
Authors:	Chou,YC;Hsieh,TF;Hsieh,YC;Lin,CP;Shu,CM
Contributors:	環境工程研究所
Keywords:	CARBON NANOTUBES;CUMENE HYDROPEROXIDE;CONDUCTIVITY;HAZARDS
Date:	2010
Issue Date:	2012-03-27 17:03:32 (UTC+8)
Publisher:	國立中央大學
Abstract:	Multi-walled carbon nanotubes (MWCNTs) have remarkable properties. However, their thermal stability characteristics, which may represent potential hazards during the production or utilization stage, concern unsafe or unknown properties researches. Our aim was to analyze the thermokinetic parameters of different heating rates by differential scanning calorimetry (DSC) and thermogravimetric analyzer (TG), and then to compare thermal decomposition energy parameters under various conditions by well-known kinetic equations. MWCNTs were acidified via nitric acid (HNO(3)) in various concentrations from 3 to 15 N and were characterized by means of Fourier transform infrared (FTIR) spectrometry. For original and modified MWCNTs, we further identified the thermal degradation characteristics of the functional group by TG-FTIR. Finally, we established an effective and prompt procedure for receiving information on thermal decomposition characteristics and reaction hazard of MWCNTs that could be applied as an inherently safer design during normal or upset operation.
Relation:	JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
Appears in Collections:	[Graduate Institute of Environmental Engineering ] journal & Dissertation

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