Authors : Kavya Sudha Bolla

Volume/Issue : Volume 11 - 2026, Issue 2 - February

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Google Scholar : https://tinyurl.com/mr43sr9s

Scribd : https://tinyurl.com/5a95rpf5

DOI : https://doi.org/10.38124/ijisrt/26feb1265

Note : A published paper may take 4-5 working days from the publication date to appear in PlumX Metrics, Semantic Scholar, and ResearchGate.

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Abstract : This article explores a novel approach to sustainable writing instruments by combining two eco-innovations: a biodegradable pen body made from a PHA starch plastic blend and ink derived from carbon waste captured from pollution sources. Unlike prior efforts, where soot-based pigments required mixing with water for paint-like applications, this concept uses a safe, child-friendly polyol-based carrier system (propylene glycol, glycerin, PEG-400) to produce ink with the same texture and flow as everyday pen inks. The project highlights material selection, chemical safety, purification workflows, and the engineering of a refillable prototype. It bridges three perspectives: electrical and electronic systems thinking, material science, and sustainability impact.

Keywords : Biodegradable Polymers, Carbon Waste–Derived Ink, PHA–Starch Polymer Blends, Sustainable Product Design, Circular Economy.

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