| Emulsion technique to synthesize polystyrene incorporated with surface modified and unmodified nano-TiO2 particles |
| Paper ID : 2531-UFGNSM13-FULL (R1) |
| Authors: |
|
mahdi mirzababaei *1, Hossein Behniafar2, hamid hashemimoghadam3 1semnan_damghan_shomali Boulevard 2School of Chemistry, Damghan University, 36715-364, Damghan, Iran 3Department of chemistry, Islamic Azad University-Damghan Branch, Damghan, Iran |
| Abstract: |
| In the present work, we have focused on the synthesis and characterization of Polystyrene (PS) nanocomposites incorporated with anatase-TiO2. The nano-TiO2 particles were used in two forms including surface modified (mod TiO2) and surface unmodified (unmod TiO2). Accordingly, two PS/TiO2 nanocomposites were synthesized, i.e. (PS/mod TiO2) and (PS/unmod TiO2), starting from styrene monomer in the presence of sodium dodecylsulfate (SDS) emulsifier. 4,4′-Methylene diphenyldiisocyanate (4,4′-MDI) was used for the surface modification of the nano-TiO2 particles via urethanation reaction with terminal –OH groups. After modification, optical behavior of the samples was determined. The chemical structure of pure polystyrene (pure-PS), (mod TiO2), (PS/mod TiO2), and (PS/unmod TiO2) was confirmed by FT-IR spectroscopy. X-ray diffraction (XRD) analyses obviously showed the broad peak related to the (pure-PS) centered at 2θ of 20 ° as well as the sharp characteristic peak of the TiO2 nanoparticles appeared at about 2θ of 25 °. Moreover, diffuse reflectance UV/vis spectroscopy analyses, (mod TiO2) and (PS/mod TiO2) samples showed strong visible absorption at the range of 400 to 600 nm. |
| Keywords: |
| Emulsion technique, Polystyrene, Surface modification, TiO2, Diffuse reflectance UV/vis, optical behavior |
| Status : Paper Accepted (Poster Presentation) |
© 2010 - 2024 All Rights Reserved. Powered by sinaweb.