黏结剂种类对加热不燃烧型烟草薄片成形及物理性能的影响

Effect of Binder Type on Forming and Physical Properties of Heat-not-burn Reconstituted Tobacco Sheets

中文关键词:  加热不燃烧型烟草薄片  稠浆法  黏度  成形  物理性能

Key Words:heat-not-burn reconstituted tobacco sheets  thick slurry method  viscosity  forming  physical properties

中文摘要:

      本研究结合稠浆法加热不燃烧型烟草薄片浆料的特征，探究了黏结剂种类及添加量对烟草薄片成形及物理性能的影响。通过对烟粉的理化特性进行表征，并结合Zeta电位、阳离子需求量分析，对比了不同添加量下，羧甲基纤维素钠、甲基纤维素、羟丙基瓜尔胶、黄原胶4种黏结剂制备所得稠浆的黏度稳定性及烟草薄片的物理性能。结果表明，当羟丙基瓜尔胶添加量为2%（相对于烟粉绝干质量，下同）时，稠浆黏度从23403 mPa·s增至27546 mPa·s，烟草薄片匀度可达92，抗张指数3.55 N·m/g，紧度1.12 g/cm³，透气度下降至0.30 μm/（Pa·s）；当黄原胶添加量低于3%、羟丙基瓜尔胶添加量低于2%时，稠浆具有较好的稳定性，可有效改善烟草薄片的成形，提高其物理性能。

Abstract:

      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 physicochemical properties of tobacco powder and analyzing the Zeta potential and cation demand， the viscosity stability and physical properties of reconstituted 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 addition， 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.