Journal
JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS
Volume 69, Issue 5-6, Pages 1375-1378Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.jpcs.2007.10.048
Keywords
inorganic compounds; nanostructures; polymers
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Polypropylene (PP)/organo-clay nanocomposites were prepared via a melt-mixing method through two-step melt compounding in a co-rotating intermeshing twin-screw extruder. Different amounts of maleic anhydride (MA)-grafted PP (PP-g-MA) were adopted during compounding as a compatibilizer, and then not only the influence of MA contents of PP-g-MA compatibilizer on the clay dispersion but also thermal and rheological properties of nanocomposites were investigated. The use of PP-g-MA led to not only good dispersion of the clay but also its heterogeneous intercalation. Dispersibility of silicate layers of the clays in the hybrids was investigated by using X-ray diffraction (XRD), and thermal stability was examined by thermal gravimetric analysis (TGA). Characteristic rheological behaviors of the PP/clay nanocomposites with various PP-g-MA (MA 0.2, 0.5, and 1.0 wt%) were also tested. (c) 2007 Elsevier Ltd. All rights reserved.
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