Functional Porous Carboxymethyl Cellulose/Cellulose Acetate Composite Microspheres: Preparation, Characterization, and Application in the Effective Removal of HCN from Cigarette Smoke

Polymers

Yipeng Wang¹  Lining Pan¹  Song Yang¹  Xiaoyu Wang¹  Hongbo Wang¹  Peijian Sun¹  Cong Nie¹  Xuehui Sun¹  Jizhao Guo¹ 

[1] Zhengzhou Tobacco Research Institute of CNTC (China National Tobacco Corporation), Zhengzhou 450001, China;

关键词: porous microspheres;    carboxymethyl cellulose;    cellulose acetate;    cupric ions;    chemisorption;    hydrogen cyanide;    smoke yield;   

DOI  :  10.3390/polym11010181

来源: DOAJ

【 摘 要 】

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.

【 授权许可】

Unknown