Effect of Organic Nano Carboncapsule Incorporated Modified Clay on Fire-Retardancy of PMMA Nanocomposites

Here we investigate a new type of highly flame retardant poly(methyl methacrylate) (PMMA) nanocomposite by bulk polymerization of methyl methacrylate (MMA) in the presence of organic nano carboncapsule (OCNC/NCNC)-incorporated modified montmorillonites (CL120, CL42). The morphology of the modified clay was confirmed by X-ray diffraction (XRD), and Fourier transform infrared (FT-IR) spectroscopy was used to identify the functional groups in the clay. The nano morphological characterization of the clay in the PMMA matrix was confirmed by XRD and transmission electron microscopy (TEM). The thermal and mechanical properties of the PMMA nanocomposites were investigated by thermogravimetry and dynamic mechanical analysis, respectively. PMMA containing organo nano carboncapsule-doped CL42 modified cocoamphodipropionate (K2) (P-O-CL42) could achieve very high thermal stability compared to pristine PMMA. The 5% thermal decomposition temperature (T5d) increased by 63.2°C. Storage modulus of PMMA nanocomposites measured by DMA analysis. An enhancement of storage modulus and significant reduction in the peak heat release (PHR) rate were observed in the almost all PMMA nanocomposites as compared to pristine PMMA. Moreover, these results suggest that PMMA nanocomposites can have potential applications in the building industry and the medical field.