Study of Optical Properties, Thermal Kinetic Decomposition and Stability of Coated PETN-Litholrubine nano-Composite via Solvent/None-Solvent Method Using Taguchi Experimental Design

In this research, in order to coating PETN particles, nano-pigment of red litholrubine B 57:1 (NLR) was used in a surfactant environment of cetyltrimethyl ammonium bromide (CTAB) using solvent/none-solvent (water-acetone) method. After structural studies of PETN-NLR nanocomposite by infrared (FT-IR) and field emission scanning electron microscopy-Energy dispersive X-ray (FESEM-EDX) methods, Taguchi statistical design method was used to investigation and optimization of light reflectance of nanocomposite at 532 nm. The effect of four factors of NLR concentration, solvent flow rate, surfactant type and surfactant concentration in three levels on light reflection was investigated and analysis of variance (ANOVA) showed that NLR concentration with the participation of 67.24 percent had highest effect. Optimal conditions to achieve a minimum light reflectance were obtained of NLR 5 wt%, solvent flow rate 1 mLmin-1, surfactant of CTAB and surfactant concentration 1×10-3molLit-1. The lowest light reflectance by analyzing the data variance for optimum conditions was estimated 4.67 ± 2.14%. Also the mean experimental result for light reflectance of the nanocomposite under optimum conditions was obtained 5.54 percent. Follows, thermal behavior and vacuum stability of the optimal sample was investigated that the results, due to the no significance difference in the melting point and the thermal decomposition mechanism of the nanocomposite compared to pure PETN, indicating the compatibility of NLR and CTAB with PETN.