synthesis and non-isothermal thermal decomposition of polydiphenyl(diphenylethynyl)silane
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ID: 138414
2017
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Abstract
Diphenyldiphenylethynylsilane monomer (DPDPES) was synthesized with ethyl bromide, diphenyldichlorosilane and phenylacetylene by Grignard reaction. The molecular structure was characterized by FTIR and 1H-NMR spectroscopy. The polymer of polydiphenyl(diphenylethynyl)silane (PDPDPES) was also prepared by thermal polymerization. Non-isothermal thermal decomposition process of PDPDPES was studied with TG-DTG technology via model method to get thermal decomposition function and the corresponding mechanism which was further verified by model-free method. Results show that the apparent activation energy and the pre-exponential factor are about Ea=245.37kJ/mol and lgA=13.78s-1 obtained by six different kinetic methods, respectively. The mechanism of functions are f(α)= 10/23 ·(1-α)·[-ln(1-α)]-1.3 and g(α)=[-ln(1-α)]2.3。
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| Reference Key |
de-xin2017journalsynthesis
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|---|---|
| Authors | ;TAN De-xin;XU Yuan;WANG Yan-li;SHU Rui-wen;XING Hong-long |
| Journal | adsorption science and technology |
| Year | 2017 |
| DOI |
10.11868/j.issn.1001-4381.2015.000941
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| URL | |
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