Fig. 1 | Scientific Reports

Fig. 1

From: Eco-friendly zinc-chitosan/poly(l-lactic acid)/polyurethane nanocomposites for dye removal and antimicrobial wastewater treatment

Fig. 1

Characterization of ZnCS/PLA/PU nanocomposites. (A) FT-IR spectra (400–4000 cm⁻¹) of ZCPP41, ZCPP11, and ZCPP14 NCs, highlighting functional group vibrations; SEM images of (B) ZCPP41, (C) ZCPP11, and (D) ZCPP14 NCs (scale bars: 500 nm, magnification: ×10,000), showing surface morphology; (E) Zeta potential distribution (+ 39.1 to -9.7 mV); (F) Particle size distribution diagram (191–365 nm) via DLS; (G) Equilibrium swelling degrees in water at 298 K and point of zero charge (pHzpc) values for (H) ZCPP41 (pHzpc ≈ 5.6) and (I) ZCPP14 (pHzpc ≈ 4.3) sorbents, indicating surface charge properties.

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