Vapor Sensor Materials Having Polymer-Grafted Conductive Particles
First Claim
Patent Images
1. A conductometric sensor film for detecting one or more chemical analytes comprising:
- a polymer matrix comprising a crosslinked polymer and a plurality of particles including a plurality of polymer-grafted conductive particles homogeneously distributed within said matrix; and
wherein the sensor film exhibits a change in resistance in the presence of the one or more chemical analytes.
0 Assignments
0 Petitions
Accused Products
Abstract
A composition for sensor films is provided that detects chemical analytes within sensors, such as polymer-absorption chemiresistors (i.e., conductometric sensors). The disclosure provides robust sensor film compositions that have low resistance, high conductivity, and greater temperature stability and sensitivity to chemical analytes. Methods of making these sensor films are also provided. Sensor film compositions include a matrix having a polymer resin and a plurality of conductive particles comprising a polymer-grafted conductive particle. Blends of conductive particles are also contemplated.
15 Citations
20 Claims
-
1. A conductometric sensor film for detecting one or more chemical analytes comprising:
-
a polymer matrix comprising a crosslinked polymer and a plurality of particles including a plurality of polymer-grafted conductive particles homogeneously distributed within said matrix; and wherein the sensor film exhibits a change in resistance in the presence of the one or more chemical analytes. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
-
-
13. A low resistance conductometric sensor film for detecting one or more chemical analytes comprising:
-
a polymer matrix comprising a crosslinked polymer comprising a siloxane monomer and a plurality of particles including a plurality of polymer-grafted conductive carbon black particles homogeneously distributed within said matrix; and wherein the sensor film exhibits a base resistance that is less than or equal to about 5 kOhms at room temperature. - View Dependent Claims (14, 15, 16, 17, 18, 19)
-
-
20. A low resistance conductometric sensor film for detecting one or more chemical analytes comprising:
a polymer matrix comprising a crosslinked polymer comprising siloxane and a plurality of polymer-grafted conductive carbon black particles homogeneously distributed within said matrix, wherein said polymer of said polymer-grafted conductive carbon black particles is electrically conductive and selected from the group consisting of;
polyaniline, polypyrrole, polythiophene, and mixtures thereof.
Specification