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Investigation of the most effective molecular descriptors on the thermal behaviour of energetic azido-ester plasticizers through QSPR approach

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Abstract

In this work, the most effective molecular descriptors on the thermal behaviour of energetic azido-ester plasticizers are investigated through quantitative structure–property relationship approach. At first, a new simple and reliable correlation is developed for predicting thermal decomposition temperature (T d) of energetic azido-ester plasticizers through multiple linear regression method. The determination coefficient of the derived correlation is 0.950, and it has root mean square deviation (RMSD) and average absolute deviation (AAD) of 2.74 and 2.09 °C, respectively. The internal and external validation method is shown that the developed correlation has good predictive ability. Then, the relationship between glass transition temperature (T G) of energetic azido-ester plasticizers and their T d is studied. This study shows that the optimum elemental composition, number of ester groups, number of azido groups and the presence of aromatic fragments are the important molecular descriptors as well as several non-additive structural parameters which have significant effect on the thermal behaviour of energetic azido-ester plasticizers. The determination coefficient of this correlation is 0.971, and it has RMSD and AAD of 3.70 and 2.67 °C, respectively. These results could be used to design ideal energetic azido-ester plasticizers.

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Acknowledgement

We would like to thank the research committee of Malek-ashtar University of Technology (MUT) for supporting this work.

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  1. Faculty of Chemistry and Chemical Engineering, Malek-ashtar University of Technology, P.O. Box 15875-1774, Tehran, Islamic Republic of Iran

    Narges Zohari, Nasser Sheibani & Hamidreza Zare Chavoshi

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  1. Narges Zohari
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  2. Nasser Sheibani
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  3. Hamidreza Zare Chavoshi
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Correspondence to Narges Zohari.

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Zohari, N., Sheibani, N. & Chavoshi, H.Z. Investigation of the most effective molecular descriptors on the thermal behaviour of energetic azido-ester plasticizers through QSPR approach. J Therm Anal Calorim 131, 3157–3167 (2018). https://doi.org/10.1007/s10973-017-6809-z

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