Deinking of Screen-Printed Electrodes Printed on Invasive Plant-Based Paper

Urška Kavčič, Igor Karlovits and Janja Zule
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Urška Kavčič: Pulp and Paper Institute, Bogišićeva 8, 1000 Ljubljana, Slovenia
Igor Karlovits: Pulp and Paper Institute, Bogišićeva 8, 1000 Ljubljana, Slovenia
Janja Zule: Pulp and Paper Institute, Bogišićeva 8, 1000 Ljubljana, Slovenia

Sustainability, 2020, vol. 12, issue 4, 1-13

Abstract: The deinking of paper-based printed electronics is a growing concern regarding the increase of printed electronics products. The benefits of using paper-based substrates instead of polymer or ceramic for the single-use printed electrodes can contribute to sustainability goals. The use of invasive plant species for making paper substrates for printed electronics is a unique opportunity to have several environmental benefits. In this study, the recycling issue of these products through the use of the deinking technique was evaluated. Screen-printed electrodes printed on an invasive plant-based paper and commercial cardboard were deinked, and their optical, morphological, and silver residues in paper and corresponding water extract were analyzed. The invasive plant-based paper had higher silver content in the recycled paper sheets, which influenced the optical and surface resistivity and residue ink particle number. On the other hand, the surface-treated cardboard had lower silver particle content after deinking, but higher silver concentrations in the water extract. The results indicate that ink-paper surface and ink-fibre interaction and adhesion is vital in the ink silver particles binding during the deinking process.

Keywords: deinking; printed electronics; screen-printed electrodes; paper electronics; invasive plant-based paper (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2020
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