1：Experimental Design and Method Selection:

The study used solution casting technique to prepare PEBA/ZnO nanocomposite thin films with different ZnO loadings (0.5 and 1 wt%). Characterization methods included AFM, FTIR, FESEM, DSC, and TGA to analyze surface morphology, chemical interactions, and thermal properties.

2：5 and 1 wt%). Characterization methods included AFM, FTIR, FESEM, DSC, and TGA to analyze surface morphology, chemical interactions, and thermal properties. Sample Selection and Data Sources:

2. Sample Selection and Data Sources: Samples included neat PEBA film and nanocomposite films with

3：5 wt% and 1 wt% ZnO nanoparticles. Materials were sourced from commercial suppliers:

PEBAX MH 1657 from Arkema, France, and ZnO nanoparticles from TECNAN, Spain.

4：List of Experimental Equipment and Materials:

Equipment: TEM (JEOL JEM-2010), FTIR spectrometer (Nicolet-550), FESEM (MIRA3 TESCAN), AFM (NT-MDT Solver P47), DSC (Netzsch DSC 250), TGA (Netzsch TG-F3209). Materials: PEBA polymer, ZnO nanoparticles, ethanol/water solvent mixture.

5：9). Materials:

4. Experimental Procedures and Operational Workflow: Dope solutions were prepared by dissolving PEBA in ethanol/water, adding ZnO nanoparticles with stirring and sonication, casting onto glass plates, drying at room temperature and in a vacuum oven, and characterizing with the specified instruments.

6：Experimental Procedures and Operational Workflow:

5. Data Analysis Methods: Data were analyzed using software such as Nano scope Software for AFM and Netzsch software for DSC and TGA, with parameters like surface roughness, thermal transitions, and weight loss measured.