Wood thermogravimetric analysis

Helsen L., Van den Buick E., Mullens S. and Mullens J. (1999) Low-temperature pyrolysis of CCA treated wood thermogravimetric analysis. J. Anal Appl. Pyrolysis, 52,65-86. 

Beall, F.C. (1969). Thermogravimetric analysis of wood hgnin and hemicelluloses. Wood arui Fiber, 1(3), 215-226. 

Treated wood was divided into 5 layers from the top to the bottom symmetrically. The contents of nitrogen and phosphorus of each layer were measured by Kelder s method and spectrophotometric determination. Thermogravimetric analysis (TG) and differential thermal analysis (DTA) were performed over the temperature range room temperature- 600 T in an air of lOOml/min., using a heating rate of 10 °C/min. 

Wiedemann, H. G., Riesen, R., Boiler, A., and Bayer, G. (1988). From wood to coal A compositional thermogravimetric analysis. In Compositional Analysis by Thermogravimetry (C. M. Earnest, Ed.), pp. 227-244. American Society for Testing and Materials, Philadelphia. 

Thermogravimetric Analysis. Thermogravimetric analysis (TG and DTG) under nitrogen atmosphere was performed for aspen wood and the 16 partially converted wood residues. The TG and DTG curves are reproduced in Figure 5 for untreated wood and for 4 selected representative SCE residues. 

Figure 15.11 Thermogravimetric analysis of pine flour and wood cellulose. 15.3.6...

Figure 15.11 shows a thermogravimetric analysis of pine flour and wood cellulose. Due to its low thermal stability, wood flour is usually used as filler only in plastics that are processed at low temperatures, lower than about 200 °C. Above these temperatures the cell wall polymers begin to decompose. High-purity cellulose pulps, where nearly all of the less thermally stable lignin and hemicelluloses have been removed, have recently been investigated for use in plastic matrices such as nylon that are processed at higher temperatures than most commodity thermoplastics [27]. 

For several decades, natural fibers have been proposed as fillers for thermoplastics [9]. They provide reasonable mechanical properties and have low density compared to mineral fillers. Fibers include sisal, jute, coir, flax, and wood. Chemically they are composed of lignin and cellulose, where the lignin is rather unstable toward heating and begins to decompose near 200°C in air as determined by loss in weight via thermogravimetric analysis (TGA). Moreover, the fiber may lose its strength at 160°C [9]. This instability... 

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