Authors:
C. Chang National Yunlin University of Science and Technology (NYUST) Department of Safety, Health and Environmental Engineering 123, University Rd., Sec. 3 Douliou, Yunlin, Taiwan 64002 ROC

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Y. Chou National Yunlin University of Science and Technology (NYUST) Department of Safety, Health and Environmental Engineering 123, University Rd., Sec. 3 Douliou, Yunlin, Taiwan 64002 ROC

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J. Tseng Graduate School of Engineering Science and Technology, NYUST Doctoral Program 123, University Rd., Sec. 3 Douliou, Yunlin, Taiwan 64002 ROC

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M. Liu Chienkuo Technology University 1, Chieh Shou N. Rd. Changhua, Taiwan 50094 ROC

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C. Shu National Yunlin University of Science and Technology (NYUST) Department of Safety, Health and Environmental Engineering 123, University Rd., Sec. 3 Douliou, Yunlin, Taiwan 64002 ROC

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Abstract  

Many concerns over unsafe or unknown properties of multi-walled carbon nanotubes (MWNTs) have been raised. The thermal characteristics regarding stability would represent potential hazards during the production or utilization stage and could be determined by calorimetric tests for various thermokinetic parameters. Differential scanning calorimetry (DSC) was employed to evaluate the thermokinetic parameters for MWNTs at various compositions. Thermoanalytical curves showed that the average heat of decomposition (ΔHd) of the MWNTs samples in a manufacturing process was about 31,723 J g−1, by identifying them as an inherently hazardous material. In this study, significant thermal analysis appeared in the presence of sulfuric acid (H2SO4). From the DSC experiments, the purification process of MWNTs could induce an unexpected reaction in the condition of batch addition with reactants of H2SO4. The results can be applied for designing emergency relief system and emergency rescue strategies during a perturbed situation or accident.

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Journal of Thermal Analysis and Calorimetry
Language English
Size A4
Year of
Foundation
1969
Volumes
per Year
1
Issues
per Year
24
Founder Akadémiai Kiadó
Founder's
Address
H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
Publisher Akadémiai Kiadó
Springer Nature Switzerland AG
Publisher's
Address
H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
CH-6330 Cham, Switzerland Gewerbestrasse 11.
Responsible
Publisher
Chief Executive Officer, Akadémiai Kiadó
ISSN 1388-6150 (Print)
ISSN 1588-2926 (Online)

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