Differential scanning calorimetry and thermogravimetric analysis

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. 

C.E. Kirby, Flameless Combustion Mechanism of M-2 Double-Base Propellant , NASA Tech Note TND-6105 (1971) CA 74, 143953 (1971) [The author reports on the heat of reaction for the flameless combustion of M-2 double-base proplnt (NG 20, NC 77, and other ingredients 3%) detd at 2,07-1380kN/m2 by the use of differential scanning calorimetry and thermogravimetric analysis. The heat of reaction... 

The thermal stability data of these three phenylnaphthyldiamine derivatives, HTM 2-4, were investigated by differential scanning calorimetry and thermogravimetric analysis the... 

FIGURE 6.4 Differential scanning calorimetry and thermogravimetric analysis data for the model drug AG337. (Reproduced from Dash, A.K. and Tyle, P., J. Pharm. Sci., 85, 1123, 1996. With permission.)... 

Thermal analysis techniques are designed to measure the above mentioned transitions both by measurements of heat capacity and mechanical modulus (stiffness). Refer to Differential Scanning Calorimetry and Thermogravimetric Analysis. (Source Cheremisinoff, N.P. Polymer Characterization Laboratory Techniques and Analysis, Noyes Publishers, New Jersey, 1996). 

Time domain reflectometry has been used to study the hydration of L-xylo- and D-orohuto-ascorbic add solutions in water and water ethanol mixtures, differential scanning calorimetry and thermogravimetric analysis have been used to study hydration of a-maltose and amylose, a new physical chemical model describes the thermodynamic properties of binary water-carbohydrate... 

Similarly, the reactions between solid 1-3 dimethylbarbituric acid (dmb) with vapours of NH3 and of the volatile amines NH2(CH3), and NH(CH3)2 have been investigated [69]. The barbiturate salts [NH4]dmb, [NH3(CH3)]dmb and [NH2(CH3)2]dmb have been characterized by X-ray powder diffraction (XRPD), differential scanning calorimetry and thermogravimetric analysis. The solid-gas reactions were monitored by UV-Vis spectroscopy in the solid state. In the case of [NH2(CH3)2]dmb, recrystallization from methanol yields the salt... 

The use of differential scanning calorimetry and thermogravimetric analysis as analytical tools in part failure determination is applied. Problems are examined in part performance of moulded 30% glass-reinforced, low-viscosity PEI and a second part moulded from PPS with proprietary additives to improve wear resistance. The importance of checking the composition of the basic material is stressed. 

The process known as transimidization has been employed to functionalize polyimide oligomers, which were subsequentiy used to produce polyimide—titania hybrids (59). This technique resulted in the successhil synthesis of transparent hybrids composed of 18, 37, and 54% titania. The effect of metal alkoxide quantity, as well as the oligomer molecular weight and cure temperature, were evaluated using differential scanning calorimetry (dsc), thermogravimetric analysis (tga) and saxs. 

Thermal analysis using differential scanning calorimetry (dsc), thermogravimetric analysis (tga), and differential thermal analysis (dta) can provide useful information about organic burnout, dehydration, and decomposition. 

It should be noted in conclusion that a thermoanalytical screening of 35 tetrazoles based on the data of differential scanning calorimetry (DSC), thermogravimetric analysis (TGA), and evolved gas analysis (EGA) has been performed <1999MI168> (cf. Section 6.07.5.2.1). 

For our investigation we used several analytical methods FT-IR spectroscopy, differential scanning calorimetry (DSC), thermogravimetric analysis (TGA) and mass-spectroscopy. 

X-Ray Diffraction, Thermal Analysis (Differential Scanning Calorimetry, DSC, Thermogravimetric Analysis, TGA), and Micro-Eourier Transform Infrared Spectroscopy. 

Supri and Ismail [46] prepared modified and unmodified low-density polyethylene (LDPE) and mixed it with water hyacinth fiber (WHF) composites by melt blending. Tensile test, differential scanning calorimetry (DSC), thermogravimetric analysis (TGA), and water absorption behavior test of the composites were conducted. The NCO-polyol-modified LDPE/AAfHF showed higher tensile strength, modulus of elasticity, and water absorption resistance as compared to the unmodified LDPE/WHF composites. However, the elongation at break was better when the LDPE was immodi-fied. Moreover, the modified LDPE/WHF offered better thermal properties in comparison to the unmodified LDPE/WHF. The NCO-polyol was reported to create better dispersion of WHF in the LDPE matrix. 

Information on standard methods for the determination of the properties of polymers is reviewed in Table 4.1. General reviews of the determination of thermal properties have been reported by several workers [1-6]. These include application of methods such as dynamic mechanical analysis [5], thermomechanical analysis [5], differential scanning calorimetry [4], thermogravimetric analysis [6], and Fourier transform infrared spectroscopy [4], in addition to those discussed below. 

Thermoanalytical (TA) methods characterize a system in terms of the temperature dependency of its thermodynamic properties and the physiochemical reaction kinetics of TPs and TSs. The techniques reviewed here include only differential scanning calorimetry (DSC), thermogravimetric analysis (TGA), thermomechanical analysis (TMA), and dy-... 

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