43 research outputs found
Synthesis and characterization of CdS nanoparticles embedded in a polymethylmethacrylate matrix
CdS nanopowder capped with sodium bis(2-ethylhexyl)sulfosuccinate was synthesized by using water-in-oil microemulsions. The CdS
nanoparticles of about 5 nm obtained were embedded in polymethylmethacrylate matrix by a photocuring process. The transparent yellow
solid compound was characterized by optical absorption and emission spectroscopy, high-resolution transmission electron microscopy, and
energy-dispersive X-ray spectroscopy. The properties of this compound were compared with those of the nanopowder dispersed in heptane
and in methylmethacrylate. The results obtained indicate that the nanoparticles are homogeneously dispersed in the matrix and do not change
in size during the embedding process. Even if the surface slightly changes its luminescence properties, as a consequence of the different new
chemical environment, the final product seems to be suitable for practical applications