%0 Conference Paper
%A  Danielescu Dan Cristian
%A  Putz Ana-Maria
%A  Savii Cecilia
%A  Sfarloaga Paula
%B International Symposium on Analytical and Environmental Problems (17.) (2011) (Szeged)
%C Szeged
%D 2012
%F acta:76475
%I SZAB
%K Elektrokémia
%P 409-412
%T Urea formaldehyde coated with Silica (Nano) capsules synthesis in ultrasonic field
%U http://acta.bibl.u-szeged.hu/76475/
%V 17
%X Silica nanomaterials with meso- and macroporosity are of great interest due to their variety of potential applications. These hybrid nanomaterials, including hollow silica nano and micro-particles have attracted more and more attention with potential applications in medicine, environmental protection and analytical chemistry. In this work we present a fast and simple method for of urea-formaldehyde (UF) nanoparticles obtained in basic medium encapsulation by a thin shell coating of silica, thus yielding organic-inorganic hybrid materials. It was employed (U:F): SiC^: mole ratios of (1:1 ):5; (1:1): 10; respectively. The influence of reaction parameters variation as temperature, pH, and time were studied. The morphology and structure of the products were characterized by FTIR spectroscopy, and Scanning Electron Microscopy; SEM. It was put in evidence some of resulted samples characteristics that are correlated to synthesis conditions.
%Z Bibliogr.: 412. p. ; ill. ; összefoglalás angol nyelven