Aerosol-generating article and aerosol-generating system

Abstract

An aerosol-generating article according to various embodiments includes a first segment and a second segment disposed downstream of the first segment, wherein, on the first segment and the second segment, nicotine is adsorbed, a first plasticizer is included in the first segment, a second plasticizer is included in the second segment, and the pH of the first plasticizer may be lower than the pH of the second plasticizer.

1 . An aerosol-generating article comprising:
 a first segment; and   a second segment disposed downstream of the first segment,   wherein nicotine is adsorbed into the first segment or the second segment, and   the first segment comprises a first plasticizer, the second segment comprises a second plasticizer, and a pH of the first plasticizer is less than or equal to a pH of the second plasticizer.   
     
     
         2 . The aerosol-generating article of  claim 1 ,
 wherein a content of the first plasticizer per unit length comprised in the first segment is greater than or equal to a content of the second plasticizer per unit length comprised in the second segment.   
     
     
         3 . The aerosol-generating article of  claim 1 ,
 wherein the first plasticizer is triacetin (TA) and the second plasticizer is triethyl citrate (TEC).   
     
     
         4 . The aerosol-generating article of  claim 3 ,
 wherein the first segment or the second segment comprises cellulose acetate.   
     
     
         5 . The aerosol-generating article of  claim 1 , further comprising:
 a medium segment disposed between the first segment and the second segment,   wherein the medium segment comprises a pH-treated tobacco medium, and the nicotine adsorbed into the first segment or the second segment is spread from the medium segment.   
     
     
         6 . The aerosol-generating article of  claim 5 ,
 wherein the medium segment is pH-treated such a pH thereof is in a range of 7.0 to 9.5.   
     
     
         7 . The aerosol-generating article of  claim 1 ,
 wherein the first segment or the second segment is manufactured by cutting a filter portion to which free nicotine emitted from a medium raw material comprising nicotine is spread.   
     
     
         8 . An aerosol-generating system comprising:
 an aerosol-generating article; and   an aerosol-generating device comprising a controller comprising at least one processor, an elongated empty space configured to receive the aerosol-generating article, and a vaporizer configured to generate an aerosol by heating a liquid composition and emit the aerosol toward the aerosol-generating article,   wherein the aerosol-generating article comprises:   a first segment; and   a second segment disposed downstream of the first segment,   wherein the first segment or the second segment comprises cellulose acetate into which nicotine is adsorbed, and   the first segment comprises a first plasticizer, the second segment comprises a second plasticizer, and a pH of the first plasticizer is less than or equal to a pH of the second plasticizer.   
     
     
         9 . The aerosol-generating system of  claim 8 ,
 wherein the aerosol-generating article further comprises a medium segment disposed between the first segment and the second segment, the medium segment comprises a pH-treated tobacco medium, and nicotine adsorbed into the first segment or nicotine adsorbed into the second segment is spread from the medium segment.   
     
     
         10 . The aerosol-generating system of  claim 9 ,
 wherein the aerosol-generating device further comprises a heater for heating the first segment, the medium segment, or the second segment, and   the controller controls a temperature to heat the first segment, the medium segment, or the second segment.