天然低共熔溶剂降低卷烟烟气苯酚释放量的性能评价

Evaluation of natural deep eutectic solvents in reducing phenol release in cigarette smoke

为开发可降低卷烟烟气中苯酚释放量的功能材料,针对苯酚酚羟基易形成氢键的特性,设计制备了36种天然低共熔溶剂(NADESs)。采用傅里叶变换红外光谱(FT-IR)、元素分析(EA)和热重分析(TG)技术表征合成产物的结构和热稳定性,采用滤嘴添加剂减害性能模拟评价装置评价合成产物降低烟气苯酚释放量的性能。结果表明:(1)FT-IR和EA结果表明合成产物为NADESs,TG分析表明NADESs在150℃下具有良好的热稳定性。(2)13种NADESs对卷烟烟气中苯酚释放量的降低率高于30%,其中氯化胆碱-乙酰丙酸(ChCl-LA)、甜菜碱-乙酰丙酸(Bet-LA)、氯化胆碱-DL-乳酸(ChCl-Lac)、L-脯氨酸-DL-乳酸(Pro-Lac)和氯化胆碱-果糖(ChCl-Fru)对苯酚的降低率高于40%。(3)NADESs的制备过程简单、绿色,制备成本低廉,能有效降低卷烟主流烟气苯酚的释放量。

To develop functional materials that can reduce phenol release in cigarette smoke,36 natural deep eutectic solvents(NADESs)were designed and prepared based on the characteristics that phenolic hydroxyl groups could easily form hydrogen bonds.The structures and thermal stability of the synthesized products were characterized by Fourier transform infrared spectroscopy(FT-IR),elemental analysis(EA)and thermogravimetric analysis(TG).The performances of the synthesized products in reducing phenol release in cigarette smoke were evaluated by a simulating device for screening the harm-reducing abilities of these filter additives in mainstream cigarette smoke.The results showed that:1)The FT-IR and EA results suggested that the NADESs were successfully synthesized.TG analysis indicated that the NADESs had good thermal stability up to 150℃.2)Thirteen NADESs reduced phenol release in mainstream cigarette smoke by more than 30%.Among them,choline chloride-levulinic acid(ChCl-LA),betaine-levulinic acid(Bet-LA),choline chloride-DL-lactic acid(ChCl-Lac),L-proline-DL-lactic acid(Pro-Lac)and choline chloride-fructose(ChCl-Fru)reduced phenol release by more than 40%.In summary,NADESs could effectively reduce phenol release in cigarette smoke and they could be prepared with a simple,green and low cost process.