The characterization of organic modified montmorillonite and its filled PMMA nanocomposite

Thermogravimetric analysis (TG) and Fourier transform infrared (FTIR) resul ts of commercial montmorillonite were compared to that exchanged with trime thyloctadecyl quaternary ammonium chloride (SCPX2048), both were treated up to 500 degreesC. The time-of-flight mass spectrometer (TOF/MS) results of SCPX2048 trapped under 300 and 500 degreesC were compared with that of N,N, N-trimethyl-1-dodecanammonium chloride (A 18-50) trapped under 200 and 300 degreesC. The degradation mechanism of organic modified montmorillonite was proposed. PMMA-clay nanocomposite was synthesized through intercalation me thod and its properties were examined by both TG and DSC techniques. The th ermal stability and glass transition temperature of montmorillonite filled PMMA increase comparing with that of the pure PMMA.