Stable ink dispersions suitable for roll-to-roll printing with sensitivity towards hydrogen sulphide gas

Jawad Sarfraz; Petri Ihalainen; Anni Määttänen; Roger Bollström; Tina Gulin-Sarfraz; Jouko Peltonen; Mika Lindén

doi:10.1016/j.colsurfa.2014.05.026

Stable ink dispersions suitable for roll-to-roll printing with sensitivity towards hydrogen sulphide gas

Jawad Sarfraz, Petri Ihalainen, Anni Määttänen, Roger Bollström, Tina Gulin-Sarfraz, Jouko Peltonen, Mika Lindén

Research output: Contribution to journal › Article › Scientific › peer-review

10 Citations (Scopus)

Abstract

This work describes the development of a stable dispersion which is suitable for roll-to-roll printing of a film exhibiting hydrogen sulfide (H2S) gas sensing functionality. The dispersions are made from copper chloride in combination with either citric acid or citric acid and polyaniline (PANI). Aqueous \{PANI\} dispersions together with copper chloride (CC) have been shown to have \{H2S\} sensing properties, but the dispersion gets unstable with the addition of \{CC\} within a pH range from 5 to 8. In this study, a mixture of \{CC\} and citric acid (CA) was optimized for printability as well as for sensitivity towards \{H2S\} gas. Furthermore the stability of an aqueous \{PANI\} dispersion was studied after the addition of \{CC\} or a CC–CA mixture as a function of pH. The stable dispersions were printed on top of flexographically printed interdigitated silver electrodes and their sensitivity towards 10 ppm \{H2S\} was verified by following the change in resistance. The printed films were characterized by atomic force microscope (AFM), time-of-flight secondary ion mass spectroscopy (ToF-SIMS) and conductometry. The sensors showed almost a three orders of magnitude change in resistance upon exposure to 10 ppm \{H2S\} at ambient conditions.

Original language	Undefined/Unknown
Pages (from-to)	401–407
Journal	Colloids and Surfaces A: Physicochemical and Engineering Aspects
Volume	460
DOIs	https://doi.org/10.1016/j.colsurfa.2014.05.026
Publication status	Published - 2014
MoE publication type	A1 Journal article-refereed

Keywords

printing
hydrogen sulfide
Functional ink
coated paper

Access to Document

10.1016/j.colsurfa.2014.05.026

http://www.sciencedirect.com/science/article/pii/S0927775714004695

Cite this

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title = "Stable ink dispersions suitable for roll-to-roll printing with sensitivity towards hydrogen sulphide gas",

abstract = "This work describes the development of a stable dispersion which is suitable for roll-to-roll printing of a film exhibiting hydrogen sulfide (H2S) gas sensing functionality. The dispersions are made from copper chloride in combination with either citric acid or citric acid and polyaniline (PANI). Aqueous \{PANI\} dispersions together with copper chloride (CC) have been shown to have \{H2S\} sensing properties, but the dispersion gets unstable with the addition of \{CC\} within a pH range from 5 to 8. In this study, a mixture of \{CC\} and citric acid (CA) was optimized for printability as well as for sensitivity towards \{H2S\} gas. Furthermore the stability of an aqueous \{PANI\} dispersion was studied after the addition of \{CC\} or a CC–CA mixture as a function of pH. The stable dispersions were printed on top of flexographically printed interdigitated silver electrodes and their sensitivity towards 10 ppm \{H2S\} was verified by following the change in resistance. The printed films were characterized by atomic force microscope (AFM), time-of-flight secondary ion mass spectroscopy (ToF-SIMS) and conductometry. The sensors showed almost a three orders of magnitude change in resistance upon exposure to 10 ppm \{H2S\} at ambient conditions.",

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author = "Jawad Sarfraz and Petri Ihalainen and Anni M{\"a}{\"a}tt{\"a}nen and Roger Bollstr{\"o}m and Tina Gulin-Sarfraz and Jouko Peltonen and Mika Lind{\'e}n",

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AU - Sarfraz, Jawad

AU - Ihalainen, Petri

AU - Määttänen, Anni

AU - Bollström, Roger

AU - Gulin-Sarfraz, Tina

AU - Peltonen, Jouko

AU - Lindén, Mika

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