Synthesis and Characterization of a Modified Vinyl Macromonomer Containing siloxane and it’s usage the Polymerization (siloxane -co- Styrene-co-Butylacrylate) through Montmorillonite Nanocomposite emulsion

A new vinyl macromonomer containing siloxane, 4 (methacryloxy) phenoxy poly methyl hydrosiloxane (4-MPMHS), is synthesized. P (Si-co-St-co-BA) through montmorillonite (MMT) nanocomposite emulsion is prepared byin situ intercalative emulsion polymerization of styrene (St), butylacrylate (BA) and 4-MPMHS, in the presence oforganic modified montmorillonite (OMMT) with different OMMT contents (0, 0.5, 1.0, 1.5, and 2 wt%). The syntheticcompounds are characterized by, FTIR, 1HNMR, 13CNMR, XRD. A nanocomposite emulsions are characterized byapplying TEM. The thermo gravimetric analysis (TGA) and differential scanning calorimetric (DSC) are applied forstudding thermal properties of the copolymer. The properties of nanocomposite emulsions containing OMMT are betterthan silicone-acrylate emulsion. The properties of nanocomposite emulsion containing 1 wt % OMMT are better thanother contents.

کلیدواژه ها:

Siloxane ، Emulsion polymerization ، Nanocomposites ، Montmorillonite