Characteristic Analysis of the Composition and Thermal Decomposition of Palm Wax
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Abstract:
The basic physicochemical properties, functional group compositions and thermal decomposition characteristics of palm wax were analyzed. GC-MS was used to detect the structural composition of palm wax. The results showed that only 22C of wax and 24C of alcohols in palm wax were detected, and further research was needed to make out structures of the particular constituents. FT-IR analysis showed that the main functional groups of palm wax were C-O, C=O, -OH, -CH3 and -CH2. The melting temperature and the final decomposition temperature of palm wax were 25~80 ℃ and 80~375 ℃, respectively, which was determined by the differential scanning calorimetry (DSC). Using TG/DSC analyzer test, the thermal stability was analyzed. It was found that the wax had good thermal stability under 150 ℃. During 150~300 ℃ the wax decomposed rapidly with 68.75% components being decomposed. During 300~425 ℃, the remaining 31.25% parts were decomposed completely. DTA diagram showed that the decomposition rate of palm wax reached the maximum at 258.57 ℃, followed with that at 332.92 ℃ and completely decomposed after 450℃.
