Differential scanning calorimetric method

Chrzanowski FA, Ulissi LA, Fegely BJ, Newman AC. Preformulation excipient compatibility testing application of a differential scanning calorimetric method versus a wet granulation simulating, isothermal stress method. Drug Devel Ind Pharm 1986 12(6) 783-800. 

Differential scanning calorimetric methods are applied for the determination of heat of fusion, purity, specific heat and activation energy of decompn for undiluted, unmixed samples of TNT, TNB, Tetryl, RDX, HMX and PETN (Ref 28). The differential thermal analysis thermo-... 

The thermal decomposition of adducts of A-phenylmaleimide and A-phenylcitraconimide with benzyl azides to yield aziridines via the loss of N2 has been studied by thermogravimetric and differential scanning calorimetric methods. It was found that the decomposition of the triazolines (60a-d) depends upon the nature of the para-substituent on the benzyl moiety. Also, the methyl... 

In the p-alkoxyphenyl esters of cyclohexanedicarboxylic acid, the series was prepared and thermally examined in which the alkoxy group was varied from methoxy through hexyloxy The thermal properties and analytical results for this series are listed in Table 1. The first two members of the series have only nematic mesophases, while the propoxy through the hexyloxy have both nematic and smectic phases As the length of the alkyl tail increases, so does the complexity of the transitions There are four distinct solid polymorphs in the pentyloxy and three in the hexyloxy compound The hexyloxy also has three smectic phases as well as the nematic These three transitions were identified as smectic by microscopy, however no attempt was made to assign them to a particular class The heats of two of these transitions were too small to measure with any degree of accuracy and only the temperatures were recorded Solid polymorphism, such as encountered in these compounds where the transitions occur at very close temperatures, prevents the application of the differential scanning calorimetric method for determination of purity ... 

Bentz AP, Breidenbach BG. Evaluation of the differential scanning calorimetric method for fat solids. JAm Oil Chem Soc 1969 46(2) 60-63. 

Using Differential Scanning Calorimetric and Roentgen-phase analyses methods it has been established that synthesized polymers are amorphous systems. Thermal (phase) transformation temperatures of synthesized polymers have been determined. Thermooxidation stability of the synthesized polymers has been studied. There was shown that their thermooxidation stability exceeded the analogical characteristic of polyorganocarbosiloxanes. 

During investigation of a new material it is unlikely that any single thermal analysis technique will provide all the information required to understand its behavior. Complementary information is usually needed, which may be from another simultaneous thermal technique such as thermogravimetric-differential scanning calorimetric-mass spectrometry (TG-DSC-MS), gas chromatography (TG-GC, or DSG-GG), or spectroscopic methods such as IR spectroscopy or X-ray photoelectron spectroscopy (XPS). 

Differential scanning calorimetric (DSC) evidence suggests the possibility of using this thermal method to identify a rigid, amorphous fraction formed by the immobilization of a surface layer of binder in contact with aggregate. 

CAI Cai, W.S., Gan, L.H., and Tam, K.C., Phase transition of aqueous solutions of poly(A,A-diethylaciylamide-co-aciyhc acid) by differential scanning calorimetric and spectrophotometric methods. Colloid Polym. Sci., 279, 793, 2001. 

Methods often used for determining the gel point include the inverted test tube method, fallen ball method, viscoelasticity measurement, and differential scanning calorimetric (DSC) method. In what follows experimental studies on the gel point and melting point from the viewpoint of the lost fluidity of sols will be individually introduced, with an emphasis on experimental procedures. 

J. H. Flynn. Thermodynamic Properties from Differential Scanning Calorimetry by Calorimetric Methods. Thermochim. Acta 1974, 8, 69-81. 

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