We can't find the internet
Attempting to reconnect
Something went wrong!
Hang in there while we get back on track
Recycling Expanded Polystyrene Waste into Microfibers by Air Jet Spinning Using a Partially Bio-Based D-Limonene Solvent System
Summary
Post-consumer expanded polystyrene waste was successfully converted into continuous microfibers using air jet spinning with a partially bio-based solvent system incorporating D-limonene, which improved fiber uniformity without altering polystyrene's chemical structure. This recycling approach offers a pathway to divert EPS from landfills and open environments where it would otherwise weather into styrene-based microplastic particles.
Expanded polystyrene (EPS) waste poses a major environmental concern due to its high volume, low density, and resistance to biodegradation. In this study, post-consumer EPS was reprocessed into continuous microfibers by Air Jet Spinning (AJS) using chloroform and chloroform/D-limonene as solvent systems. The effects of polymer concentration, air pressure, and solvent ratio on fiber formation were systematically investigated through rheological and surface tension analyses. The incorporation of 10 vol. % D-limonene improved jet stability and reduced bead formation, attributed to its lower volatility and favorable solubility with EPS, as supported by Hansen solubility parameters. SEM analysis confirmed uniform microfiber formation within a defined processing window. FTIR spectra indicated preservation of the polystyrene chemical structure, while TGA and DSC analyses were used to evaluate thermal behavior and assess potential residual solvent retention, particularly related to D-limonene. The results elucidate the interplay between solvent volatility, solution properties, and fiber morphology, establishing a sustainable processing framework for converting EPS waste into value-added fibrous materials via AJS. This work contributes to the United National Sustainable Development Goals, particularly SDG 12 (Responsible Consumption and Production) by promoting EPS waste valorization, and SDG 13 (Climate Action) through the partial replacement of conventional solvents with sustainable alternative.