Evaluation of heats of transition in scanning calorimetry |
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Authors: | Robert N Goldberg Edward J Prosen |
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Institution: | Physical Chemistry Division, Institute for Materials Research, National Bureau of Standards, Washington, D.C. 20234 U.S.A. |
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Abstract: | A procedure for the evaluation of heats of transition in scanning calorimetry has been developed. A formula for evaluation of the energy of fusion of a compound at its melting point is derived that takes into account the baseline shift that is attributable to the heat capacity change on melting. Several other calorimeter parameters of importance are discussed. These include heat exchange between calorimeter vessel and jacket, the time constant of the instrument, the scanning rate, and the heater placement. |
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