Explores surface characteristics and conductivity of cellulose acetate/CeO2 composites, suggesting applications in electronics.
The present work explores the structural composition, surface wettability, and conductivity of CA/CeO2 composite. The CA/CeO2 composite films were made from cellulose acetate (CA) reinforced with different ratios of cerium dioxide (CeO2) nanoparticles. The EDX data showing the presence of carbon and oxygen from the CA matrix with CeO2 nanoparticles. The SEM and TEM revealed interactions between the CA and the CeO2 with good dispersion and compatibility. In addition, surface wettability was evaluated using contact angle measurements with polar and non-polar liquids. By increasing CeO2, the water contact angle is decreased from 59.22° for CA to 45.22° for CA/7.5%CeO2, while for diiodomethane it is decreased from 52.26° to 38.40°. The reduction of contact angle after TiO2, indicating enhanced surface hydrophilicity. The polar free energy increases from 15.97 mJ/m2 for CA to 66.26 mJ/m2 for CA/7.5%CeO2. The electrical conductivity showed a significant improvement compared with the CA film, from 2.99x10−13 S/cm for CA to 6.24x10−13, 2.19x10−12, and 2.05x10−11, respectively, for CA/2.5%CeO2, CA/5.0%CeO2, and CA/7.5%CeO2. The obtained results demonstrate CeO2 effectively modifies the structural, surface, and electrical properties of CA, highlighting the potential of these nanocomposites for use in electronics applications.
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Abdeltwab et al. (2026) studied this question.
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