Preparation of Cationic Porous Starch and It's Adsorption of Volatile Aldehydes in Cigarette Smoke

Abstract:

Cationic porous starch was a new chemical modified starch which can be used as adsorbent in cigarette to absorb crotonaldehyde in mainstream of smoke. The preparation of cationic porous starch was carried out by alkali catalytic under dry process via the reaction of porous corn starch with 3-chloro-2-hydroxypropyl-trimethyl ammonium chloride. Different preparation conditions were investigated based on the degree of substitution （DS） and reaction efficiency （RE），including the mass ratio of etherifying agent/starch and sodium hydroxide/etherifying agent，temperature and reaction duration. The reaction conditions were optimized with 0.04 and 2.0 of the mass ratio of etherifying agent/starch and sodium hydroxide/etherifying agent was at 85 ℃ for 4 h. The results showed that a 37.36 % reduction of crotonaldehyde in cigarette smoke with 10 mg cationic porous starch and only 14.94 % reduction with 10 mg porous starch.