ArticleRSC advances2026
Advancing polyallophanate powder coating performance and function with colloidal lignin particles.
Article in RSC advances, 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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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
7 authors.
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Abstract
Polyallophanate powder coatings are increasingly attractive as sustainable, solvent-free finishing materials, yet their performance and functionality remain limited by the properties of conventional additives. Colloidal lignin particles (CLPs) offer a renewable alternative with intrinsic antioxidant, UV-absorbing, and antibacterial characteristics. In this study, CLPs were produced from organosolv lignin derived from palm oil lignocellulosic residues using three particle size-reduction approaches: sonication, antisolvent, and hybrid. The hybrid method produced the most stable dispersions, yielding spherical CLPs with reduced particle size and increased surface area compared to native lignin. CLPs were incorporated at 1-5 wt% into petroleum-based and lignin-based polyallophanate powder coating formulations to evaluate their influence on thermal, mechanical, surface, antibacterial, and UV-aging behavior. CLP addition enhanced the thermal stability of those petroleum-based coating systems and imparted measurable antibacterial activity against
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Registered trials
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