Thermal gravimetric analysis cellulose

Determination of the thermal decomposition temperature by thermal gravimetric analysis (tga) defines the upper limits of processing. The tga for cellulose triacetate is shown in Figure 11. Comparing the melt temperature (289°C) from the dsc in Figure 10 to the onset of decomposition in Figure 11 defines the processing temperature window at which the material can successfully be melt extmded or blended. 

Figure 4. Thermal gravimetric analysis of irradiated cellulose pulp.

The particle size of DKF was 5—20 [rm while that of DBC was 1—5 pm. The physical properties of the DBC and DKF materials were compared with those of the commercially available microcrystalline cellulose Avicel PH 101. DBC exhibited lower value of the loose density than those of DKF and Avicel PH 101. Both microcrystalline DBC and Avicel PH 101 demonstrated similar behaviour during flow and binding processes. The thermal properties of DBC and DKF materials were investigated by thermo-gravimetric analysis (Fig. 10.7). The TGA results reveal increased thermal stability for DBC compared to DKF (Keshk and Haijia, 2011). 

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