A kind of graphene polysaccharide modified cigarette filter that selectively intercepts benzene ring harmful substances and preparation method thereof

Abstract

A preparation method of a graphene polysaccharide-modified cigarette filter capable of selectively intercepting benzene-ring harmful substances is characterized in that all agents used herein are by weight, and the method comprises the steps of (1) preparing graphene oxide; (2) reducing the graphene oxide; (3) preparing water-soluble polysaccharide; (4) preparing reduced graphene oxide / water-soluble polysaccharide; (5) modifying with acetate fiber. The cigarette filter prepared herein is capable of significantly lowering tar to decease damage and improving cigarette quality, can provide mellow taste, allows the benzene-ring harmful substances in smoke, such as 3,4- benzopyrene and phenols to be decreased by 45-65%, and enables the harm of the substances to be further lowered based on existing cigarette quality.

Description

technical field [0001] The invention belongs to a cigarette filter material, and in particular relates to a graphene polysaccharide modified cigarette filter which selectively intercepts benzene ring harmful substances and a preparation method thereof. Background technique [0002] In recent years, under the active promotion of the World Health Organization (WHO), many national governments and various anti-smoking groups, the global anti-smoking movement has been rising day by day, and the tobacco industry has been under increasing social pressure. The Framework Convention on Tobacco Control formulated by WHO and signed by governments of member states not only stipulates that governments should take and implement effective legislative, administrative and other measures to prevent and reduce tobacco consumption, nicotine addiction and exposure to tobacco smoke, etc. , but also requires restrictions on the content of tobacco products. At present, some major developed countrie...

AI Technical Summary

Problems solved by technology

The method disclosed in this patent is simple, but due to its special structure, graphene is directly dispersed in water and easily aggregates. At the same time, due to the influence of the degree of deacetylation, chitosan has poor water solubility, and acetic acid solution is used as a solvent during use. The resulting graphene / chitosan solution is prone to aggregation, which affects the selective adsorption performance of the material.

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