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| Mechanism of Different Removal Rate of Deleterious Compounds in Mainstream Cigarette Smoke of CAPF and Cellulose Acetate Filter Rods |
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| DOI：10.11980/j.issn.0254-508X.2013.10.009 |
| Key Words:wood fibre cellulose acetate filter rods ammonia benzopyrene CAPF |
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| Abstract:The main materials of CAPF rod filler are wood fibres, and they are acetate fibres in cellulose acetate filter rods. These two kinds of filter rods exist in differences in removing rate of ammonia and benzopyrene in mainstream cigarette smoke. The purpose of this paper was to analyze the reasons causing the aforementioned differences, to find out the differences of physical and chemistry adsorption capacities for ammonia and benzopyzene of those wood fibre and acetate fiber. The results showed that wood fiber has better hydrophilicity than the acetate fibre, and ammonia is soluble in water so it’s easier to be absorbed by wood fibre. The pore structure investigation indicated that, the section composed of wood fibres in CAPF rods has smaller mean pore size and large amount of pore with small size therefore it absorbs more small granular substance easily such as benzopyzene. Benzopyzene can’t start chemical reaction with wood fibre and acetate fibre when it goes with smoke through cigarette filter rods. |
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