Swab composition for detection of molecules/explosives on a surface
AssigneeTechnion Research & Development Foundation Limited
InventorsEyal Zussman, Yuval Eshed, Reshef Gal-Oz
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Abstract
Compositions comprising electrospun fibers and colorimetric detection encapsulated thereto are provided. Further, methods of use of said composition, including, but not limited to in-situ detection of molecules of interest, such as explosive compounds, are provided.
Claims14
A swab comprising at least one type of electrospun fibers and at least one colorimetric reactant, the electrospun fibers comprise a brittle shell and a core, said core is a liquid and comprises the at least one colorimetric reactant, and said brittle shell is a polymeric shell characterized by glass transition between 70° C. and 150° C. and is configured to break under normal stress of 0.08-1 kg/cm2 at a temperature between −55° C. and 60° C., so as to allow detection of a solid analyte;
- and wherein a polymeric material of said brittle shell consist of poly(methylmethacrylate-co-ethylacrylate) (PMCEA).
A swab comprising a fibrous matrix consisting of at least one type of electrospun microfibers and a colorimetric reactant, wherein:
- the electrospun microfibers comprise a brittle shell and a core encapsulated by said brittle shell;
- said core consists of a liquid composition comprising said colorimetric reactant;
- said brittle shell is a polymeric shell characterized by a glass transition between 70° C. and 150° C. and is configured to break under normal stress of 0.08-1 kg/cm2 at a temperature between −55° C. and 60° C., so as to allow detection of a solid analyte;
- wherein said colorimetric reactant is an amine;
- and wherein a polymeric material of said brittle shell consist of polyacrylate.
Dependencies are inferred from the claim text.