Sun Peijian, Yang Song, Sun Xuehui, Wang Yipeng, Pan Lining, Wang Hongbo, Wang Xiaoyu, Guo Jizhao, Nie Cong
Zhengzhou Tobacco Research Institute of CNTC (China National Tobacco Corporation), Zhengzhou 450001, China.
Polymers (Basel). 2019 Jan 21;11(1):181. doi: 10.3390/polym11010181.
To selectively reduce the yield of hydrogen cyanide (HCN) in the cigarette smoke, functional porous carboxymethyl cellulose/cellulose acetate (CMC/CA) composite microspheres were prepared via the double emulsion-solvent evaporation method. Cupric ions, which have a high complexing ability toward HCN, were introduced to the CMC/CA composite microspheres during the fabrication process via an in situ ion cross-link method. The microspheres were characterized using nitrogen adsorption, mercury intrusion porosimetry, and scanning electron microscopy (SEM). The microspheres have a predominantly macroporous structure indicating weak physisorption properties, but sufficient functional cupric ion groups to selectively adsorb HCN. With these CMC/CA microspheres as filter additives, the smoke yield of HCN could be reduced up to 50%, indicating the great potential of these microspheres as absorbents for removing HCN from cigarette smoke.
为了选择性降低香烟烟雾中氰化氢（HCN）的产量，通过双乳液-溶剂蒸发法制备了功能性多孔羧甲基纤维素/醋酸纤维素（CMC/CA）复合微球。在制备过程中，通过原位离子交联法将对HCN具有高络合能力的铜离子引入到CMC/CA复合微球中。使用氮气吸附、压汞法和扫描电子显微镜（SEM）对微球进行了表征。微球具有以大孔结构为主的结构，表明其物理吸附性能较弱，但有足够的功能性铜离子基团来选择性吸附HCN。以这些CMC/CA微球作为过滤添加剂，HCN的烟雾产量可降低高达50%，表明这些微球作为从香烟烟雾中去除HCN的吸附剂具有巨大潜力。
