Preparation and Rheological Study of Acryl Amide/2-Acryl Amido-2-Methyl Propane Sulfonic Acid Copolymer / Modified Montmorillonite/ Nanocomposite

Cloisite Na+ was modified with dimethylchlorovinylsilane (DMCVS) and trichlorovinylsilane (TCVS), in order to replace the silanol groups of the clay mineral with silane vinyl groups (silylation reaction). The mechanism of silylation is studied. The most grafting yield is obtained with 4mmol/g of DMCVS. In-situ solution copolymerization of modified Mts was carried out with acrylamide (AM ) and 2-acryl amido-2-methyl propane sulfonic Acid (AMPS). The nanocmposites were characterized with FTIR, TGA and XRD. Rheological behaviors of the nanocomposites are modeled with different rheological models. The best model for these nanocomposites was Cross model

Keywords:

nanocomposite , silane , grafting , acrylamide , rheological models