Formation of Polyaniline (PANI) Multilayer Film using Humic Acid as the Bridging Agent: Screening on the Fabrication Technique

Shu Qing Liew; Yit Kwan  Lee; Fei Wang; Kiat Moon Lee; Hung Yang Leong; Swee Pin Yeap

doi:10.37934/progee.20.1.1623

Authors

Shu Qing Liew Department of Chemical & Petroleum Engineering, Faculty of Engineering, Technology & Built Environment, UCSI University, 56000, Cheras, Kuala Lumpur, Malaysia
Yit Kwan Lee Department of Chemical & Petroleum Engineering, Faculty of Engineering, Technology & Built Environment, UCSI University, 56000, Cheras, Kuala Lumpur, Malaysia
Fei Wang Department of Chemical & Petroleum Engineering, Faculty of Engineering, Technology & Built Environment, UCSI University, 56000, Cheras, Kuala Lumpur, Malaysia https://orcid.org/0000-0003-0439-6535
Kiat Moon Lee Department of Chemical & Petroleum Engineering, Faculty of Engineering, Technology & Built Environment, UCSI University, 56000, Cheras, Kuala Lumpur, Malaysia https://orcid.org/0000-0003-1126-9657
Hung Yang Leong Department of Electrical & Electronics Engineering, Faculty of Engineering, Technology & Built Environment, UCSI University, 56000, Cheras, Kuala Lumpur, Malaysia
Swee Pin Yeap (1) Department of Chemical & Petroleum Engineering, Faculty of Engineering, Technology & Built Environment, UCSI University, 56000, Cheras, Kuala Lumpur, Malaysia; (2) UCSI-Cheras Low Carbon Innovation Hub Research Consortium, Kuala Lumpur, Malaysia https://orcid.org/0000-0002-0203-2722

DOI:

https://doi.org/10.37934/progee.20.1.1623

Keywords:

Polyaniline, Humic Acid, Direct Growth, Structural, Drop-casting

Abstract

The application of polyaniline (PANI) in flexible electronic devices has received increased attention due to its environmental stability, electrical conducting properties, and ease of production. While the electrical conductivity of a PANI film can be altered by modifying the number of PANI layers, this study aims to compare two techniques, namely ex-situ and in-situ, for the fabrication of PANI multilayer film. For the ex-situ technique, PANI was formed separately before being drop-casted on a filter paper; on the other hand, for the in-situ technique, polymerization of aniline into PANI and attachment of PANI on a filter paper was allowed to occur simultaneously. In both techniques, humic acid was used as the bridging agent. Results showed that the in-situ direct growth technique produced PANI multilayer film with good uniformity, lesser cracking, and detachment. On the other hand, the ex-situ drop-casting technique resulted in PANI film with very poor uniformity, irregular thickness, and severe detachment.

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