Real-time potentiometric pH-sensor using a screen-printable polyaniline composite on textiles

We have developed a flexible, screen-printable, pH-sensitive composite for textile substrates. The composite is prepared by mixing polyaniline (PANI) with dodecylbenzene sulfonic acid and textile screen-printing ink. A percolation threshold is found, and the optimal composite formulation's pH r...

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Bibliographic Details
Published in2021 IEEE International Conference on Flexible and Printable Sensors and Systems (FLEPS) pp. 1 - 4
Main Authors Laffitte, Yohan, Gray, Bonnie L.
Format Conference Proceeding
LanguageEnglish
Published IEEE 20.06.2021
Subjects
conductive polymers
flexible sensors
Rheology
screen-printing
Sensitivity
Sensor systems
Sensors
Time factors
wearable
Wearable computers
Wounds
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Summary:We have developed a flexible, screen-printable, pH-sensitive composite for textile substrates. The composite is prepared by mixing polyaniline (PANI) with dodecylbenzene sulfonic acid and textile screen-printing ink. A percolation threshold is found, and the optimal composite formulation's pH response is compared to electropolymerized and drop-cast PANI sensors via open circuit potential measurements. A linear response is observed for all sensors between pH 3 and 10, with the composite demonstrating a sensitivity of -28.2 mV/pH.
DOI:10.1109/FLEPS51544.2021.9469705