CA2300722A1 - Electrochemical sensors made from conductive polymer composite materials and methods of making same - Google Patents

Electrochemical sensors made from conductive polymer composite materials and methods of making same Download PDF

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Publication number
CA2300722A1
CA2300722A1 CA002300722A CA2300722A CA2300722A1 CA 2300722 A1 CA2300722 A1 CA 2300722A1 CA 002300722 A CA002300722 A CA 002300722A CA 2300722 A CA2300722 A CA 2300722A CA 2300722 A1 CA2300722 A1 CA 2300722A1
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CA
Canada
Prior art keywords
polymer blend
electrochemical sensor
methods
analyte
conductive polymer
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CA002300722A
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French (fr)
Other versions
CA2300722C (en
Inventor
Stephen H. Foulger
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Prysmian Power Cables and Systems USA LLC
Original Assignee
Pirelli Cables and Systems LLC
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Pirelli Cables and Systems LLC filed Critical Pirelli Cables and Systems LLC
Publication of CA2300722A1 publication Critical patent/CA2300722A1/en
Application granted granted Critical
Publication of CA2300722C publication Critical patent/CA2300722C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
    • G01N27/02—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance
    • G01N27/04—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance
    • G01N27/12—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance of a solid body in dependence upon absorption of a fluid; of a solid body in dependence upon reaction with a fluid, for detecting components in the fluid
    • G01N27/125—Composition of the body, e.g. the composition of its sensitive layer
    • G01N27/126—Composition of the body, e.g. the composition of its sensitive layer comprising organic polymers
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B1/00—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors
    • H01B1/06—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors mainly consisting of other non-metallic substances
    • H01B1/12—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors mainly consisting of other non-metallic substances organic substances
    • H01B1/124—Intrinsically conductive polymers
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
    • G01N27/26—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating electrochemical variables; by using electrolysis or electrophoresis
    • G01N27/28—Electrolytic cell components
    • G01N27/30—Electrodes, e.g. test electrodes; Half-cells
    • G01N27/308—Electrodes, e.g. test electrodes; Half-cells at least partially made of carbon

Abstract

An electrochemical sensor which is tailored for sensitivity to specific chemical analytes by selecting proper constituents. The electrochemical sensor is comprised of an immiscible polymer blend of at least two polymers in which a conductive filler is dispersed in one of the polymers of the blend through a multiple percolation approach to compounding. When in the presence of a chemical analyte which is in either a liquid or vapor phase, one phase of the dual immiscible polymer blend swells, effecting a decrease in the conductivity, or increase in resistivity, of the polymer blend. The electrochemical sensor is reversible in that when the chemical analyte evaporates or is removed, the polymer blend returns to its original conductivity. With the multiple percolation approach it is possible to make a single composite material identifiably sensitive to various chemical analytes by incorporating several major phase materials into the immiscible polymer blend, each having an affinity for swelling for a different analyte. Further, the multiple percolation approach allows sensors to be made at extremely low cost.
CA002300722A 1999-03-16 2000-03-15 Electrochemical sensors made from conductive polymer composite materials and methods of making same Expired - Fee Related CA2300722C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US09/268,884 1999-03-16
US09/268,884 US6315956B1 (en) 1999-03-16 1999-03-16 Electrochemical sensors made from conductive polymer composite materials and methods of making same

Publications (2)

Publication Number Publication Date
CA2300722A1 true CA2300722A1 (en) 2000-09-16
CA2300722C CA2300722C (en) 2009-05-19

Family

ID=23024929

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002300722A Expired - Fee Related CA2300722C (en) 1999-03-16 2000-03-15 Electrochemical sensors made from conductive polymer composite materials and methods of making same

Country Status (2)

Country Link
US (1) US6315956B1 (en)
CA (1) CA2300722C (en)

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Also Published As

Publication number Publication date
US6315956B1 (en) 2001-11-13
CA2300722C (en) 2009-05-19

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