Drying and adhesive properties of novel surface coatings derived from peanut skin extract and cashew nutshell liquid
ISSN: 0369-9420
Article publication date: 17 May 2022
Issue publication date: 28 July 2023
Abstract
Purpose
This study aims to synthesize pigment and resin from agro-wastes and use them in the formulation of eco-friendly surface coatings.
Design/methodology/approach
The pigments and resin were synthesized through a chemical modification of agro-wastes. The pigments were characterized by infrared spectroscopy (FTIR) and were screened for their antimicrobial activities. The physicochemical characteristics of the cashew nutshell liquid (CNSL)-modified resin were evaluated. These precursors and other natural additives were used to formulate surface coatings, and their drying and adhesive properties were evaluated using international testing methods.
Findings
It was observed that the curing of the CNSL-modified resin depended on time and temperature. The pigments exhibited antimicrobial activity against E. coli and S. aureus and had high melting points, affirming their stability. The chemically modified precursors successfully yielded surface coatings with acceptable drying times and adhesion to the base substrate.
Practical implications
The use of agro-wastes as the main components of the surface coatings implies waste valorization, a reduction in production costs and the creation of job opportunities for sustainable development. To increase the chemical, physical, corrosion resistance and antimicrobial qualities of paint compositions, chemically modified peanut skin extracts and CNSL can be used as pigments and resins, respectively. This could be a green approach to achieving the targets of Sustainable development goals 11 and 12.
Originality/value
The paper outlines a prospective approach to use unwanted waste (peanut skin, cashew nutshells) and other natural additives as industrial raw materials. These novel surface coating precursors are cost-effective, readily available, eco-friendly and could replace conventional precursors.
Keywords
Acknowledgements
The author are thankful to the contributions of Mr Desmond Nkansah and Miss Hajara Abudul Karim for technical assistance.
Funding: This research received no funding.
Citation
Kyei, S.K., Eke, W.I., Darko, G. and Akaranta, O. (2023), "Drying and adhesive properties of novel surface coatings derived from peanut skin extract and cashew nutshell liquid", Pigment & Resin Technology, Vol. 52 No. 5, pp. 641-652. https://doi.org/10.1108/PRT-08-2021-0087
Publisher
:Emerald Publishing Limited
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