NDLI: Thermal analysis of sulfurization of polyacrylonitrile with elemental sulfur

Content Provider	Springer Nature Link
Author	He, X. M. Wang, L. Pu, W. H. Ren, J. G. Wu, W. Jiang, C. Y. Wan, C. R.
Copyright Year	2008
Abstract	Thermal analysis of sulfurization of polyacrylonitrile (PAN) with elemental sulfur was investigated by thermogravimetry and differential thermal analysis of the mixture of polyacrylonitrile and elemental sulfur up to 600°C. Due to the volatilization of sulfur, the different heating rate (10 and 20 K min$^{−1}$) and different mixture proportion of polyacrylonitrile and elemental sulfur were adopted to run the analysis. The different heating rates make the DSC curves of sulfur different, but make the DSC curves of PAN similar. In the DSC curve of sulfur for the heating rate of 20 K min$^{−1}$ around 400°C, a small exothermic peak occurs at 400°C in the wide endothermic peak around 380∼420°C, indicative of that there is an exothermic reaction around 400°C. In the DSC curves of the mixture, the peaks around 320°C are exothermic as the content of sulfur is below 3.5:1 and endothermic as the content of sulfur is over 4:1, indicating that one of the reactions between PAN and sulfur takes place around 320°C. In the TG curves of the mixture, the mass losses begin at 220°C, and sharply drop down from 280°C. The curves for the low sulfur content obviously show two steps of mass loss, and curves for the high sulfur content show only one step of mass loss, indicative of more sulfur is benefit for the complete sulfurization of PAN. This study demonstrates that the TG/DSC analysis can give the parameter for the sulfurization, even if the starting mixture contains the volatile sulfur.
Starting Page	151
Ending Page	155
Page Count	5
File Format	PDF
ISSN	13886150
Journal	Journal of thermal analysis
Volume Number	94
Issue Number	1
e-ISSN	15728943
Language	English
Publisher	Springer Netherlands
Publisher Date	2008-08-12
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	DSC elemental sulfur polyacrylonitrile pyrolysis sulfur composite cathode materials thermogravimetry Measurement Science, Instrumentation Inorganic Chemistry Polymer Sciences Analytical Chemistry Physical Chemistry
Content Type	Text
Resource Type	Article
Subject	Physical and Theoretical Chemistry Condensed Matter Physics

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