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The recyclability of Lyocell fibres using the N-methylmorpholine N-oxide (NMMO) solvent system was investigated to promote circular economy strategies in the textile industry. This study demonstrates that standard commercial Lyocell fibres can be effectively recycled via the NMMO process to obtain regenerated fibres containing up to 30% of recycled content. The untreated fibres exhibited an excellent dissolution rate, exceeding 85%, indicating their compatibility with the solvent system. The mechanical properties of recycled fibres were comparable to those of fibres produced from reference dissolving pulp, confirming the preservation of filament performance. In contrast, other Lyocell grades consisting of surface-treated fibres were found to hinder recyclability. These findings elucidate the influence of fibre surface modifications on their suitability for chemical recycling processes and support the integration of Lyocell fibres into closed-loop production models.
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Pires et al. (2026) studied this question.
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