Open Access

ARTICLE

Inkjet-printed Myoglobin based H₂S Sensor

KANCHANA M¹, RAJASEKARAN E², KUMAR B¹, USHA ANTONY³

1 Department of Printing Technology, College of Engineering Guindy, Anna University, Chennai-600 025, Tamil Nadu, India.
2 Department of Mechanical Engineering, College of Engineering Guindy, Anna University, Chennai-600 025, Tamil Nadu, India.
3 College of Fish Nutrition & Food Technology, TNJFU Madhavaram Campus, Chennai- 600 051, Tamil Nadu, India.

* Corresponding Author: e-mail:

Journal of Polymer Materials 2021, 38(3-4), 309-325. https://doi.org/10.32381/JPM.2021.38.3-4.11

Abstract

The objective of this research work is to investigate the feasibility of fabricating bio-based visual sensor indicators to detect the presence of H₂S using inkjet printing. Myoglobin and chitosan were used as indicating and immobilizing materials respectively. 30 mg of myoglobin dissolved in 1 mL of tris buffer with 10% glycerol gave optimum jettability properties. Similarly, drop formation was optimal for 0.50% m/v chitosan solution diluted to 10 cP viscosity. The samples were fabricated in layer-by-layer approach and indicator with 2 layers of chitosan and 4 layers of myoglobin gave maximum sensitivity with 14.42 for 0.7 mg/L of H₂S. The sensors retained their functionality for 5 days even when stored at room temperature.

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Keywords

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