Journal
POLYMER
Volume 46, Issue 11, Pages 3571-3578Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.polymer.2005.03.044
Keywords
LDH reactive nanofiller; polystyrene; nanocomposites
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Layered double hydroxide (LDH) organo-modified by a surface-active monomer, 3-sulfopropyl methacrylate (SPMA) was used as filler for polystyrene (PS). Different nanocomposites SPMA/LDH:PS were prepared by bulk polymerization process using low amount of initiator. The two components, filler and polymer, as well as the degree dispersion of the reactive filler as a function of its loading in PS were characterized by a combination of several techniques: X-ray diffraction, high resolution C-13 CP-MAS NMR, FTIR, UV-visible, thermal analysis, SEC and MET. The nanocomposites were submitted to UV-Iight exposures in the presence of oxygen. The oxidation photoproducts and the rates of oxidation were compared for the various samples. It was shown that the filler was not modifying the oxidation mechanism of the polymer, but had a slight effect on the oxidation rate. © 2005 Elsevier Ltd. All rights reserved.
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