کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
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1696497 | 1519132 | 2007 | 8 صفحه PDF | دانلود رایگان |
Sodium montmorillonite (Na-MMT) was modified with oligomeric polyoxypropylene amine derivatives as well as simple amines by a cation exchange. For reference, commercial modified MMTs, Cloisite™ were analyzed in detail. The modifier content in OA-MMT as determined by TGA was found to be 4–40 wt.% and dependent on the structure of the modifier. The basal spacing of OA-MMT was strongly dependent on the structure and amount of the modifier. With the polyoxypropylenediamine of molecular mass 2000, the basal spacing of OA-MMT was enlarged up to 45.3 Å. The OA-MMT nanocomposites with polystyrene (PS) and poly(methyl methacrylate) (PMMA) were prepared by solution blending and in-situ polymerization, a large extent of exfoliation was obtained, together with thin packets of montmorillonite layers.
Journal: Applied Clay Science - Volume 38, Issues 1–2, December 2007, Pages 1–8