Effect of Binder Type on Forming and Physical Properties of Heat-not-burn Reconstituted Tobacco Sheets
Combined with the pulp characteristics of heat-not-burn reconstituted tobacco sheets by thick slurry method,the study investigated the effects of binder type and dosage on the forming and physical properties of reconstituted tobacco sheets.By characterizing the physico-chemical properties of tobacco powder and analyzing the Zeta potential and cation demand,the viscosity stability and physical properties of re-constituted tobacco sheets were compared under different dosage of four types of binder:sodium carboxymethyl cellulose,methyl cellulose,hydroxypropyl guar gum and xanthan gum.The results showed that the viscosity of thick slurry increased from 23403 mPa·s to 27546 mPa·s with 3%xanthan gum addition(relative to the absolute dry amount of tobacco powder),and the homogeneity of reconstituted tobacco sheets was up to 92,the tensile index was 3.55 N·m/g,the tightness was 1.12 g/cm3,and the permeability was reduced to 0.30 μm/(Pa·s).In ad-dition,when the dosage of xanthan gum was lower than 3%and the hydroxypropyl guar gum was lower than 2%,the stability of heat-not-burn reconstituted tobacco sheets was better,the forming was effectively improved,and physical properties were enhanced.
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