Abstract:
Heated tobacco products show great market potential because of their advantages in terms of low toxicity, minimal production of second-hand smoke, and a similarity of smoking experience to traditional cigarettes. However, a change in heating method can cause the temperature in the mainstream smoke to be too high. Therefore, the development of cooling filters for heated tobacco products is urgently needed. With cellulose diacetate filter rod as the carrier, and food-grade paraffin wax as the phase change endothermic material, cooling filter rods made of paraffin wax/cellulose diacetate were prepared by the impregnation method, and the developed rods were characterized by TG/DTA, FT-IR, DSC and SEM. The effects of melting point and loading amount of paraffin wax on the temperature in the mainstream smoke of heated tobacco product were investigated. The filter rods are produced by the adsorption of paraffin wax onto the filter rods of cellulose diacetate. Good heat absorption capacity and thermal stability of the system are observed in the smoking process. When the mass fraction of the emulsified 52
# paraffin wax is 60%, i.e. the loading amount of paraffin wax is 35 mg, the three-stage cooling filter composed of paraffin wax/cellulose diacetate filter rod show a significant cooling effect on the mainstream smoke, leading to a reduction of temperature from 68 ℃ to 42 ℃.