A kind of nanofiber composite material and its use

Abstract

The invention provides a nanofiber composite material, which comprises a first polymer nanofiber layer, an adsorption layer, a second polymer nanofiber layer, and a substrate layer stacked in sequence, and the first polymer nanofiber layer The nanofiber layer and the second polymer nanofiber layer are obtained by electrospinning the oil-soluble polymer. Compared with the traditional cigarette filter, the cigarette filter prepared with the nanofiber composite material prepared by the present invention as the main component is The particulate matter, tar and carbon monoxide components in tobacco have stronger selective adsorption capacity, and the filtering effect is respectively increased by 8.2%, 9.3% and 9.4% compared with traditional filters, and it has selective permeability for nicotine components in tobacco Compared with the filter tip of the control group, 0.11mg / piece of nicotine can be permeated more, so that the active ingredients and aroma components of the cigarette can be retained, and the satisfaction of smokers can be improved, thereby reducing tobacco consumption and carcinogenicity. Intake of strong ingredients.

Description

technical field [0001] The invention relates to the field of composite materials, in particular to a nanofiber composite material with selective adsorption capacity and its application. Background technique [0002] Smoking is very harmful to human health. Many diseases are directly related to smoking. However, for those who cannot quit smoking, cigarettes are an indispensable necessities of life. The chemical substances in cigarettes are mainly dry tobacco. However, tobacco is not the only ingredient in most cigarettes. In order to control the flavor and quality of shredded tobacco, manufacturers usually add a large number of different additives to cigarettes, resulting in about 7,000 chemical substances in the smoke produced when cigarettes are lit, including From the lowest molecular weight carbon monoxide to the highest tar, etc., most of them are toxic and carcinogenic compounds, which need to be separated and removed by adsorption. [0003] At present, one end of comm...

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Problems solved by technology

[0003] At present, one end of common cigarettes on the market contains a filter tip made of cellulose acetate or cotton and an activated carbon adsorption layer to absorb and filter carcinogenic compounds such as tar, carbon monoxide, nitrosamines, and benzopyrene produced by tobacco combustion. For example, CN106805292A discloses a cigarette filter tip containing activated carbon, which is composed of acetate fiber part near the lip and activated carbon part near the smoke body, which can effectively absorb and remove harmful gases such as CO in the smoke, and reduce tar and nicotine inhalation, CN106805291A discloses a cigarette filter tip with the effect of scavenging free radicals, which is composed of two parts of filter media alternately, one part of the filter media is cellulose acetate, and the other part of the filter media is a mixture of activated carbon and lycopene. In contrast, the antioxidant lycopene in it can effectively remove the harmful free radicals in the gas phase produced after tobacco burning, the activated carbon component in it can absorb toxic gases such as CO in the smoke, and the alternate filter media can achieve the purpose of multiple filtration, Thereby reducing the harm of tobacco to the human body, the filter tips disclosed in the above-mentioned prior art can effectively absorb harmful components in tobacco, but, because the corresponding active ingredients in cigarettes such as nicotine, tea powder, citral, high-grade fatty esters, etc. They are removed together, leading to the disappearance of the unique aroma and flavor of cigarettes, so that smokers cannot obtain the corresponding sense of satisfaction, thus inhaling deeper and more, but inhaling more harmful substances in total, causing greater harm

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