Cross-linked fluorinated polymers for use in gas sensors
First Claim
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1. A gas sensor device comprising:
- an optical waveguide having a distal end portion for monitoring a gas component within a bloodstream or the like, said optical waveguide further including a proximal end portion for communication with means for receiving a signal from said distal end portion;
said distal end portion has gas sensor means including a cross-linked fluoropolymer matrix having a gas-sensitive indicator therewithin; and
said matrix is a composite formed by cross-linking a composition including between about 60 and about 90 weight percent of a highly fluorinated monofunctional acrylate monomer and between about 10 and about 40 weight percent of a multifunctional acrylate cross-linking agent, all weight percentages being based on the total weight of the composition,wherein said highly fluorinated monofunctional acrylate monomer is a component having a formula R(CH2)n O2 CC2 H3, wherein R is X(CF2)m, where m is from 3 to 12, inclusive, X is H or F; and
wherein n is 1, 2 . . . 3 m, or a formula;
##STR2## wherein R'"'"' is CM F2M+1, where M is 2 or more;
wherein R" is CH3, C2 H5 . . . C4 H9 ; and
wherein X is H or CH3, andwherein said multifunctional acrylate cross-linking agent is a triacrylate or an acrylate of greater acrylate functionality.
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Abstract
A chemical sensor matrix is provided for use in medical, biological and industrial applications. The gas sensor includes a cross-linked fluoropolymer matrix of a composite having a gas-sensitive indicator within the matrix. The composite includes a highly fluorinated monofunctional acrylate monomer and a multifunctional acrylate cross-linking agent. Gas-sensitive indicator components which are suitable for detecting gases such as oxygen, carbon dioxide and the like represent indicators suitable for incorporation into the cross-linked fluoropolymer matrix.
58 Citations
23 Claims
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1. A gas sensor device comprising:
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an optical waveguide having a distal end portion for monitoring a gas component within a bloodstream or the like, said optical waveguide further including a proximal end portion for communication with means for receiving a signal from said distal end portion; said distal end portion has gas sensor means including a cross-linked fluoropolymer matrix having a gas-sensitive indicator therewithin; and said matrix is a composite formed by cross-linking a composition including between about 60 and about 90 weight percent of a highly fluorinated monofunctional acrylate monomer and between about 10 and about 40 weight percent of a multifunctional acrylate cross-linking agent, all weight percentages being based on the total weight of the composition, wherein said highly fluorinated monofunctional acrylate monomer is a component having a formula R(CH2)n O2 CC2 H3, wherein R is X(CF2)m, where m is from 3 to 12, inclusive, X is H or F; and
wherein n is 1, 2 . . . 3 m, or a formula;
##STR2## wherein R'"'"' is CM F2M+1, where M is 2 or more;
wherein R" is CH3, C2 H5 . . . C4 H9 ; and
wherein X is H or CH3, andwherein said multifunctional acrylate cross-linking agent is a triacrylate or an acrylate of greater acrylate functionality. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A gas sensor device comprising:
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an electrochemical gas sensor including gas sensor means for monitoring a gas component within a patient or the like; said gas sensor means includes a gas-sensitive indicator within a cross-linked fluoropolymer matrix; and said matrix is a cross-linked composite of a composition including between about 60 to about 90 weight percent of a highly fluorinated monofunctional acrylate monomer and between about 10 and about 40 weight percent of a multifunctional acrylate cross-linking agent, all weight percentages being based on the total weight of the composition, wherein said highly fluorinated monofunctional acrylate monomer is a component having a formula R(CH2)n O2 CC2 H3, wherein R is X(CF2)m, where m is from 3 to 12, inclusive, X is H or F; and
wherein n is 1, 2 . . . 3 m, or a formula;
##STR3## wherein R'"'"' is CM F2M+1, where M is 2 or more;
wherein R" is CH3, C2 H5 . . . C4 H9 ; and
wherein X is H or CH3, andwherein said multifunctional acrylate cross-linking agent is a triacrylate or an acrylate of greater acrylate functionality. - View Dependent Claims (10, 11)
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12. A cross-linked gas permeable membrane for a gas sensor device, comprising:
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a composite including a highly fluorinated monofunctional acrylate monomer and a multifunctional acrylate cross-linking agent, said composite further having incorporated therewithin a gas-sensitive indicator component; wherein said highly fluorinated monofunctional acrylate monomer is a component having a formula R(CH2)n O2 CC2 H3, wherein R is X(CF2)m, where m is from 3 to 12, inclusive, X is H or F; and
wherein n is 1, 2 . . . 3 m, or a formula;
##STR4## wherein R'"'"' is CM F2M+1, where M is 2 or more;
wherein R" is CH3, C2 H5 . . . C4 H9 ; and
wherein X is H or CH3, andwherein said multifunctional acrylate cross-linking agent is a triacrylate or an acrylate of greater acrylate functionality; and said composite and said indicator incorporated therewithin had been cross-linked and cured into a cross-linked fluoropolymer gas permeable component matrix. - View Dependent Claims (13, 14, 15, 16, 17)
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18. A cross-linked gas permeable microparticle for use within a gas sensor device, comprising:
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a composite including a highly fluorinated monofunctional acrylate monomer and a multifunctional acrylate cross-linking agent, said composite further having incorporated therewithin a gas-sensitive indicator component; wherein said highly fluorinated monofunctional acrylate monomer is a component having a formula R(CH2)n O2 CC2 H3, wherein R is X(CF2)m, where m is from 3 to 12, inclusive, X is H or F; and
wherein n is 1, 2 . . . 3 m, or a formula;
##STR5## wherein R'"'"' is CM F2M+1, where M is 2 or more;
wherein R" is CH3, C2 H5 . . . C4 H9 ; and
wherein X is H or CH3, andwherein said multifunctional acrylate cross-linking agent is a triacrylate or an acrylate of greater acrylate functionality; and said composite and said indicator incorporated therewithin had been crosslinked and cured into a cross-linked fluoropolymer gas permeable microparticle matrix. - View Dependent Claims (19, 20, 21, 22, 23)
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Specification