AEROSOL-GENERATING ARTICLES SUITABLE FOR USE IN AEROSOL-GENERATING DEVICES
An aerosol-generating article may include: an aerosol-forming substrate; and/or at least one element including at least one polyhydroxyalkanoate (PHA). The at least one element may be downstream with respect to the aerosol-forming substrate. An aerosol-generating article may include: an aerosol-forming substrate; a support element immediately downstream of the aerosol-forming substrate; an aerosol-cooling element downstream of the support element; and/or an outer wrapper circumscribing the aerosol-forming substrate, the support element, and the aerosol-cooling element. The aerosol-cooling element may include at least one PHA. A method for quenching reactive oxygen species (ROS) in an aerosol produced by an aerosol-generating article comprising an aerosol-forming substrate may include: providing the aerosol-generating article with at least one element including at least one PHA. The at least one element is downstream with respect to the aerosol-forming substrate.
1 . An aerosol-generating article, comprising:
an aerosol-forming substrate; and
at least one element including at least one polyhydroxyalkanoate (PHA);
wherein the at least one element is downstream with respect to the aerosol-forming substrate.
2 . An aerosol-generating article, comprising:
an aerosol-forming substrate;
a support element immediately downstream of the aerosol-forming substrate;
an aerosol-cooling element downstream of the support element; and
an outer wrapper circumscribing the aerosol-forming substrate, the support element and the aerosol-cooling element;
wherein the aerosol-cooling element includes at least one polyhydroxyalkanoate (PHA).
3 . The article of claim 2 , wherein the aerosol-cooling element is formed by a sheet of polymeric composition that is pleated to define a plurality of longitudinally extending channels, and
wherein the polymeric composition comprises the at least one PHA.
4 . The article of claim 2 , wherein the aerosol-cooling element is formed by a sheet of polymeric composition that is pleated to define a plurality of longitudinally extending channels, and
wherein the sheet is coated with the at least one PHA.
5 . The article of claim 2 , wherein the support element is a hollow tubular element made from fibers bonded together to form a filtering element.
6 . The article of claim 5 , wherein the fibers comprise the at least one PHA.
7 . The article of claim 5 , wherein the fibers comprise cellulose acetate fibers bonded together using the at least one PHA surrounding the cellulose acetate fibers.
8 . The article of claim 2 , further comprising:
a mouthpiece filter at an extreme downstream end of the aerosol-generating article;
wherein the mouthpiece filter comprises fibers bonded together to form a filtering element, and
wherein the fibers comprise the at least one PHA.
9 . The article of claim 2 , further comprising:
a mouthpiece filter at an extreme downstream end of the aerosol-generating article,
wherein the mouthpiece filter comprises fibers bonded together to form a filtering element, and
wherein the fibers are cellulose acetate fibers bonded together using the at least one PHA surrounding the cellulose acetate fibers.
10 . The article of claim 1 , wherein the aerosol-forming substrate comprises a gathered sheet of crimped homogenized tobacco material circumscribed by a wrapper.
11 . The article of claim 1 , wherein the at least one PHA comprises a polymer containing repeating units of formula (I):
—O—CHR 1 —(CH 2 ) n —CO— (I)
where R 1 is selected from: C 1 -C 12 alkyls, C 4 -C 16 cycloalkyls, C 2 -C 12 alkenyls, optionally substituted with at least one group selected from: halogen (F, Cl, Br), —CN, —OH, —OOH, —OR, or —COOR (R═C 1 -C 4 alkyl, benzyl), and
where ‘n’ is zero or is an integer from 1 to 6.
12 . The article of claim 11 , wherein the at least one PHA is selected from: polyhydroxybutyrate (PHB), poly-3-hydroxyvalerate (PHV), poly-3-hydroxyhexanoate (PHH), poly-3-hydroxyoctanoate (PHO), poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV), poly(3-hydroxybutyrate-co-3-hydroxyhexanoate) (PHBH), poly(3-hydroxybutyrate-co-4-hydroxybutyrate), poly(3-hydroxyoctanoate-co-3-hydroxyundecen-10-enoate) (PHOU), poly(3-hydroxybutyrate-co-3-hydroxyvalerate-4-hydroxyvalerate) (PHBVV), polyhydroxybutyrate-hydroxyvalerate copolymer, or mixtures thereof.
13 . The article of claim 1 , wherein the at least one PHA has a weight-average molecular weight (M w ) greater than or equal to 10,000 daltons (Da) and less than or equal to 1,000,000 Da.
14 . A method for quenching reactive oxygen species (ROS) in an aerosol produced by an aerosol-generating article comprising an aerosol-forming substrate, the method comprising:
providing the aerosol-generating article with at least one element including at least one polyhydroxyalkanoate (PHA);
wherein the at least one element is downstream with respect to the aerosol-forming substrate.
15 . The article of claim 10 , wherein the tobacco material contains glycerin as an aerosol-former.
16 . The article of claim 11 , where ‘n’ is 1.
17 . The article of claim 11 , where ‘n’ is 2.
18 . The article of claim 11 , where R 1 is methyl or ethyl.
19 . The article of claim 11 , where R 1 is methyl, and where ‘n’ is 1 or 2.
20 . The article of claim 11 , where R 1 is ethyl, and where ‘n’ is 1 or 2.