Pyrolysis behavior of cigar wrapper, binder and filler

The cigar wrapper, binder and filler play different roles in cigar puffing. This work aims to conduct a comprehensive study on the pyrolysis process of cigar wrappers, binders and fillers to obtain the similarities and differences in the residue, combustibility and pyrolysis products. In the residue section, the surface microstructure of the cigar wrapper, binder and filler was scanned by the scanning electron microscope, and the elemental state composition was characterized by X-ray photoelectron spectroscopy during the combustion process. The combustibility of the cigar wrapper, binder and filler was evaluated by the mass loss rate obtained from thermogravimetric experiments and the heat release rate obtained from the microscale combustion calorimeter experiments. The pyrolysis products were analyzed by infrared spectroscopy and mass spectrometry. The research results show that the similarities between wrapper, binder and filler lie in the elemental composition, combustibility and the main components of pyrolysis products. The difference lies in the fact that the surface microstructure of the wrapper is the smoothest, while the filler is the roughest with the leaf vein. The concentration of pyrolysis products in filler is significantly higher than in wrapper and binder after 400 °C. This work analyzed the similarities and differences in their pyrolysis behavior, providing a deeper understanding of cigar pyrolysis.