Journal
CHEMISTRY OF MATERIALS
Volume 12, Issue 6, Pages 1702-1707Publisher
AMER CHEMICAL SOC
DOI: 10.1021/cm0000494
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Organically modified magadiite has been prepared by grafting gamma-metlrlacryloxypropylsilyl (gamma-MPS) groups to the interlayer surface. gamma-Methacryloxypropyltrimethoxysilane as silylating reagent was reacted with dodecyltrimethylammonium-exchanged magadiite. Formation of the organic derivatives of magadiite was confirmed by XRD, IR, Si-29 CP-MAS NMR, and C-13 CP-MAS NMR. Copolymerization of the grafted groups with methyl methacrylate yielded a novel type of layered silicate-organic intercalation compound with covalently bound polymers in the interlayer space. This is in contrast to conventional clay-polymer systems where ionic interactions between silicates and organic modifiers are dominant.
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