Study on influencing factors of hygroscopic properties of rolled tobacco sheet
To study the hygroscopicity of heated tobacco's core materials,rolled tobacco sheet was taken as the research object,the effects of external environmental relative humidity,glycerol mass fraction and particle size of tobacco powder on its hygroscopicity were investigated through the single factor experiment.The differences in hygroscopicity of tobacco sheets prepared by rolling method,thick pulp method and paper making method were compared.The first-order and second-order adsorption kinetic models were used to fit and analyze the moisture absorption kinetic characteristics of rolled tobacco sheet.Further investigation was conducted on the hygroscopic thermodynamic properties of rolled tobacco sheet using six common adsorption models.The results showed that environmental relative humidity and mass fraction had the greatest impact on hygroscopicity,the higher the environmental relative humidity and the glycerol mass fraction,the stronger the hygroscopicity.The effect of parti-cle size of tobacco powder on hygroscopicity was insignificant.The hygroscopicity of rolled tobacco sheet was com-parable to that of tobacco slices produced by thick pulp method,and both were stronger than that of tobacco slices produced by paper making method.The moisture absorption time curve of rolled tobacco sheet was more in line with the second-order adsorption kinetics model,and its moisture absorption isotherm curve was more in line with the Peleg model.
万方数据
维普
