Abstract Differential Scanning Calorimetry (DSC) is a widely accessible and versatile method for the determination of the heat capacities of organic materials as a function of temperature. In routine use, it is typically possible to obtain results with an accuracy better than 3 %. However, to achieve this level of accuracy, careful optimization of the experimental procedure for a specific apparatus must be performed. Using benzoic acid as a test substance, this work highlights some practical aspects of heat capacity measurements by DSC, such as crucible material and its geometry, heating rate, thermal lag, the selection of a suitable pre-stabilization stage before the measurement and the duration of the experiment, that can have a strong influence on the quality of the obtained results.

中文翻译：

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差示扫描量热法测定热容的一些实际问题

摘要 差示扫描量热法 (DSC) 是一种广泛使用且通用的方法，用于确定有机材料的热容随温度的变化。在日常使用中，通常可以获得精度高于 3% 的结果。然而，为了达到这种精度水平，必须对特定设备的实验程序进行仔细优化。使用苯甲酸作为测试物质，这项工作突出了 DSC 热容测量的一些实际方面，例如坩埚材料及其几何形状、加热速率、热滞后、测量前合适的预稳定阶段的选择和持续时间的实验，这可能会对获得的结果的质量产生很大的影响。