Study on Pyrolysis Behavior of Tobacco Cuticle Based on TG-FTIR-MS
In order to study the pyrolysis behavior of tobacco cuticle and the release law of gaseous products during pyrolysis,the cuticle of tobacco leaves was separated by enzyme and chemical methods,and then were characterized by scanning electron microscope and Fourier infrared spectroscopy.The thermal release behavior and pyrolysis products of the cuticle were detected using TG-FTIR-MS coupling technology.The results showed that the cuticle could be separated by enzymatic and chemical methods.The pyrolysis of the cuticle could be divided into three stages:dehydration(50-135℃),rapid devolatilization(135-595℃)and carbonization(595-900℃).The main gas components produced by pyrolysis included CH4 and CO2,and the gas products were mainly concentrated in the temperature range of 300-600℃,among which the carboxylic acids and toluene were the most.With the increase of temperature,the production of benzene series began at about 250℃and reached the peak at 500-540℃,while the production of nicotine was relatively smaller.
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