Document Type : Articles
Malek Ashtar Industrial University, Chemistry and Chemical Engineering Complex, Tehran, Iran.
Chemistry and Chemical Engineering Complex, Malek Ashtar Industrial University, Tehran, Iran.
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