甜味剂对电子烟具用导油棉糊芯程度的影响.

The phenomenon of the burnt degree of the coil（cotton wick)has a serious impact on consumer health and experience. Sweeteners are an important component of e-liquids, but Neotame is the only option for sweetener in e-liquids listed in the Chinese national standard. There still lacks systematic and comparative report on sweeteners, and it’s hard to directly evaluate the effect of sweetener on the burnt degree of the coil(cotton wick). The sensory evaluation on the sweetness characteristics of glucose-stevioside(GSG), rubusoside, sucralose, Neotame, Fulltame（FA)and acesulfame（AK)was employed. The thermal stability and volatility of the sweeteners or their solution(propylene glycol-glycerol mixture as the solvent) were analyzed with thermogravimetry and differential scanning calorimetry analysis, respectively. The coil-burnt experiment was conducted with the coils absorbed the sweetener solution in a Muffle furnace, and the effect of sweeteners on the burnt degree of coil was investigated with visual inspection and whiteness measurement. The assayed sweeteners can be entirely aerosolized by PG-VG in the absence of coil. The ratio of propylene glycol to glycerol, baking temperature, baking time and sweetener type are the influence factors for the coil whiteness after burning. By baking the coil soaked sweetener solution（4% in e-liquids)at 260 ℃ for 30 min, the mass retention rate of coil follows：sucralose＞AK＞GSG＞Neotame＞FA＞blank, while the whiteness of the baked coil, which indicates less enhancement on the degree of burning followed：GSG-FA＞blank＞ Neotame＞sucralose＞AK. [ABSTRACT FROM AUTHOR]