Does Illinois bituminous coal manifest glass transition: DMA, DSC, and FTIR results

- No glass transitions observed for Illinois bituminous coal at 30 °C ⩽ T ⩽ 300 °C.
- Thermal events at ⩽300 °C are due to vapor evaporation and cross-linking reactions.
- Illinois bituminous coal underwent self oxidation under pyrolytic conditions.
- The CO2 trapped in coal particles lowered the coal's viscosity.
- Thermal studies indicated coal underwent cross-linking similar to phenolic.