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Combustion behaviors of hydrogenated and unhydrogenated colophony esters/petroleum resins using TG-FTIR and DFT analysis
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  • Dan Zhou,
  • Xiaopeng Chen,
  • Jiezhen Liang,
  • Xiaojie Wei,
  • Chenghong Wu,
  • Yaoliang He,
  • Linlin Wang
Dan Zhou

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Xiaopeng Chen
Guangxi University
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Jiezhen Liang
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Xiaojie Wei
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Chenghong Wu
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Yaoliang He
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Linlin Wang
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The combustion behavior of tackifying resins (such as glycerol ester of colophony/hydrogenated colophony and C9/hydrogenated C9 petroleum resin, namely GEC, GEHC, C9PR and HC9PR, respectively) were investigated using TG-FTIR and density functional theory (DFT) analyses. Results from combustion characteristics indicate tackifying resins and their wastes are a promising fuel for generating energy. The average activation energies obtained by Friedman method for GEC, GEHC, C9PR and HC9PR were 223.51, 162.16, 166.52 and 116.20 kJ/mol, respectively, revealing that (H)C9PR were more readily combustible than GE(H)C, and their hydrogenated products burned more easily than their unhydrogenated ones, which were strongly supported by the TG-FTIR results. DFT calculations also show that the bond dissociation energy of C-C bond of GEC is higher than those of C9PR and GEHC. The best appropriate reaction mechanism evaluated by integral master plots is f(α)=3(1-α)2/3. Volatiles are mainly composed of H2O, CH4, CO2, CO, alcohol, aromatic and carbonyl compounds.