ArticleACS omega2026
Evaluation of Iron-Lignin Particles Obtained by the Nanoprecipitation Method: Influence of Process Conditions on Morphology, Structure, and Properties.
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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5 authors.
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Abstract
Lignin nanoparticles (LNPs) are important biobased materials that have been considered for several applications such as antioxidants, UV protectants, heavy metal absorption, antimicrobials, drug carriers, gene delivery systems, encapsulation of molecules, biocatalysts, supercapacitors, tissue engineering, hybrid nanocomposites, and wound dressing. Moreover, lignin-functionalized metal nanoparticles can be applied for different catalytic reactions. Despite their technological importance, the synthesis of lignin and lignin-functionalized metal nanoparticles remains an unexplored subject, in particular the methods to produce uniform spherical particles. In this context, the aim of this work is to analyze the effect of different variables on the morphology, particle size, particle size distribution, and properties of two different kraft lignins. Based on the concept of chain coiling and decoiling, two different solvents, four different temperatures, and two kinds of kraft lignins were tested. A nanoprecipitation method was applied, resulting in iron-lignin particles with different morphologies. The use of a THF/water mixture as a solvent resulted in spherical lignin particles, and the use of DMF/water resulted in elongated shapeless particles. Higher temperatures (40 °C) led to larger particles. Also, softwood lignin produced larger particles than hardwood lignin. FTIR-ATR analysis showed that the attenuation of signal peaks between 1700 and 1030 cm
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