ArticleACS omega2026
Biobased Lignin as a Sustainable Flame Retardant Additive for Recycled Polyester Fabrics.
Article in ACS omega, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
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Authors and funding
4 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Recycled poly-(ethylene terephthalate) (rPET) textiles present intrinsic challenges for flame-retardant finishing due to the hydrophobic and chemically inert surface of PET fibers, as well as their pronounced melt-dripping behavior during combustion. Here, we demonstrate that incorporating only 1% owf lignin into a phosphorus-nitrogen coating is sufficient to achieve effective flame retardancy (LOI of 37.5%, UL 94 V-0), while retaining self-extinguishing behavior after five laundering cycles. A sustainable halogen-free coating system was developed by combining a phosphorus-based flame retardant (aluminum diethylphosphinate) with biobased lignin and sericin within a cross-linked poly-(vinyl alcohol)/citric acid matrix. The incorporation of lignin promoted char formation, suppressed melt dripping, and facilitated rapid self-extinguishing behavior. Increasing lignin loading to 3-5% owf did not further improve UL 94 performance and instead reduced wash durability, indicating that low lignin loading is sufficient for effective performance. In addition to enhanced flame retardancy, the treated fabrics maintained mechanical integrity, exhibited hydrophobic surface characteristics, and showed good colorfastness to crocking.
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Registered trials
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