ArticleMaterials (Basel, Switzerland)2026
Influence of the Spent Coffee Ground-to-Ammonium Lignosulfonate Ratio on the Performance of Wood-Fiber Biocomposites.
Article in Materials (Basel, Switzerland), 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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Abstract
Spent coffee grounds (SCGs) and ammonium lignosulfonate (ALS) are promising renewable constituents for wood-fiber biocomposites, but the effect of their relative proportion within the binder phase remains insufficiently understood. This preliminary study evaluated wood-fiber panels produced at a constant dry-matter matrix-to-fiber ratio of 50:50 while varying the SCG:ALS ratio from 70:30 to 30:70. The panels were hot-pressed and characterized for their physical and mechanical properties, while the corresponding SCG-ALS matrix formulations were evaluated by simultaneous TGA-DSC analysis. Increasing the SCG fraction generally improved dimensional stability and mechanical performance, whereas formulations containing 50% or more ALS showed a marked deterioration in water resistance. The SCG-rich 70:30 formulation provided the highest bending performance, with MOE and MOR values of 2156.5 and 12.83 N·mm
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