The functionalization technologies with nanoparticles

CeO2 nanoparticles were characterized by SEM and TM analyzes that showed a size of about 10 ± 0.46 nm and a ployed shape. By Differential Scanning Calorimetry (DSC) was obtained the thermograme that releved the absence of cerium oxide sample peaks due to the high melting point 2400°C, the temperature range in which the sample was analyzed being between 35°C and 500°C. Two ypes of CeO2 dispersions were made, in ultra pure water (UPW) and solvent. The statistical indicators: average, coefficient of variation and standard deviation were calculated and they showed higher values in the case of dispersion with solvent then dispersion in UPW. The evolution study of the amount of CeO2 on the surface of knits depending on the treatment of resistance to acid/alkaline perspiration and washing releved for all fibrous mixtures, white or dyed, a decrease of max.5% of the amount of NP on the surface of the knits after the tests of acid, alkaline and washing perspiration. Statistical indicators of dimensions and distances distribution of CeO2 on the surface of knits depending on the nature of the oleophobic agent revealed the tendency to increase the average values of the agglomeration dimensions does not differ significantly from the oleophobic variant with Nuva N 2114 compared to the one with Rucostar EEE6 in all three categories of treatments: acid, alkaline and washing. The evolution of the statistical indicators of the distribution of the distances between CeO2 on the surface of oleophobic knitwear with Nuva N2114 or Rucostar EEE6 and functionalized with CeO2 in UPW dispersion shows that the average distance between CeO2 agglomerations is significantly more balanced acid/alkaline and washing, compared to the oleophobic variant with Nuva N 2114. The friction test leads to an increase in the size and distances between the nanoparticles.