Inscriere cercetatori

Site nou !

Daca nu va puteti recupera parola (sau aveti alte probleme), scrieti-ne la pagina de contact. Situl vechi se gaseste la adresa old.ad-astra.ro

Facebook

Preparation and characterization of polysulfone membranes containing Ag nanoparticles by a convenient ultraviolet irradiation technique

Domenii publicaţii > Chimie + Tipuri publicaţii > Articol în revistã ştiinţificã

Autori: Viorica Gaina, Constantin Gaina, Mihaela Olaru

Editorial: Solid State Phenomena, 151, p.145-149, 2009.

Rezumat:

A novel silver/polysulfone nanocomposite membrane was prepared by a convenient
ultraviolet irradiation technique, through in situ reduction of silver salt (AgNO3) added to a solution
of commercial UDEL polyethersulfone dissolved in N-methyl-2-pyrrolidinone (NMP). The UVreduction
of Ag+ to Ag0 nanoparticles was confirmed by means of UV-vis spectroscopy, from
aggregation phenomena. The effects of dispersion of silver nanoparticles within polysulfone matrix
were investigated by means of ATR-FTIR, dynamic mechanical thermal analysis and differential
scanning calorimetry. Using X-ray diffraction, it was shown that annealing produced silver
crystallites of 70-90 nm across, which are partially textured in “sheetlike” {110} planes.

Cuvinte cheie: silver nanoparticles, polysulfone