Thermogravimetric analysis degradation

Homma, H., Kuroyagi, T., Izumi, K., Mirley, C.L., Ronzello, J. and Boggs, S.A., Evaluation of surface degradation of silicone rubber using thermogravimetric analysis, Proc. Int. Symp. Electr. Insul. Mater., 2nd. 1998, 1, pp. 631-634. 

Thermogravimetric analysis and other studies made on low-molecular weight model compounds such as 1,3, 5,-trichlorohexane [7,8] corresponding to the idealized head-to-tail structure of PVC show these structures to be considerably more stable than the polymer. This abnormal instability of the polymer is attributed to structural irregularities or defects in the polymer chain, which serve as initiation sites for degradation. 

The thermal degradation of TsHs and other TsRs species (R = Me, /Bu, nCsHiy, Ph) in air and an inert atmosphere has been studied by thermogravimetric analysis and shows that for TsHs incomplete sublimation tends to occur, and, in air, oxidation competes with volatalization. ... 

Thermal stability is a crucial factor when polysaccharides are used as reinforcing agents because they suffer from inferior thermal properties compared to inorganic fillers. However, thermogravimetric analysis (TGA) of biocomposites suggested that the degradation temperatures of biocomposites are in close proximity with those of carbon black composites (Table-1). 

Figure 4. Thermogravimetric analysis of polymer VII (upper curve) with derivative (lower curve) showing two distinct thermal degradations.

Brack, H.-P, Ruegg, D., Biihrer, H., Slaski, M., Alkan, S. and Scherer, G. G. 2004. Differential scanning calorimetry and thermogravimetric analysis investigation of the thermal properties and degradation of some radiation-grafted films and membranes. Journal of Polymer Science Part B Polymer Physics 42 2612-2624. 

Recently, MS combinations have been available including the thermogravimetric analysis mass spectroscopy (TG-MS) combination developed by Carraher that allows the continuous characterization of evolved materials as a polymer undergoes controlled thermal degradation. 

Thermogravimetric analysis, though not necessarily indicative of all high temperature properties, is a convenient way to indicate the degree of thermal reaction occurring at a particular temperature. The thermal stability of polyimides has been the subject of many studies (10). Our results obtained from free films of 1-2 mils are shown in Fig. VII and are in agreement with Heacock and Berr(ll). Since 1-2 mil films are not used here, we decided to study the thermal degradation of... 

Trichloroethane Degradation temperatnre Glass transition temperatnre(s) Thermogravimetric analysis Tetrahydrofnran Trintrobenzene Trinitrotolnene... 

Kinetic data on the thermal degradation of ABS and PC/ABS blends are available (130,131). Thermogravimetric analysis suggests that the kinetics of the thermal degradation can be modelled by an auto-catalytic process. 

Jana RN, Mukunda PG, Nando GB (2003) Thermogravimetric analysis of compatibi-lized blends of low density polyethylene and poly(dimethyl siloxane) rubber. Poly Degrad Stabil 80(l) 75-82... 

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