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Streszczenie:
This study presents the results of investigations on the influence of raw material type and synthesis method of cadmium yellow on the electrokinetic potential of pigment particles and the sedimentation stability of the resulting dispersions
in various chemical environments. Pigments were synthesized from cadmium salts (chloride, sulfate, nitrate, and carbonate) using sodium sulfide or elemental sulfur as sulfur sources. Two synthesis routes were applied: (1) precipitation of
the pigment from solution, followed by filtration, drying at 60 °C, and calcina-tion at 600 °C in acidic and alkaline media; and (2) direct reaction of cadmium carbonate with sulfur at 600 °C. The materials were characterized using Raman spectroscopy and X-ray photoelectron spectroscopy (XPS). The zeta potential of
the particles was measured at different pH values, and dispersion stability was evaluated by turbidimetric analysis (Turbiscan). The obtained pigments were mixtures of compounds, with cadmium sulfide (CdS) being the predominant component. The chemical composition depended on the synthesis route and the
calcination process. A correlation was found between the electrokinetic potential,sedimentation stability, and chemical composition of the pigments. Calcination significantly affected surface properties, while the presence of chloride, sulfite,
sulfate, and carbonate species modified the electrokinetic potential. Acidic envi-ronments were found to enhance the sedimentation stability of cadmium-based pigments. The findings highlight the importance of synthesis conditions for the
surface chemistry, electrokinetic behavior, and sedimentation stability of cad-mium-based pigments in aqueous systems.

Słowa kluczowe:
PVC plastisol, wood flour, wood–polymer composites, silane modification, eco-friendly insulation materials, coating composites, thermal stability

Słowa kluczowe:
poly(vinyl chloride) plastisol, wood flour, polymer-wood composite film