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Glass Transition Temperature Measurement of Polycarbonate Specimen by Dynamic Mechanical Analyser Towards the Development of Reference Material
MAPAN ( IF 1 ) Pub Date : 2022-06-15 , DOI: 10.1007/s12647-022-00572-3
Manoj Sehrawat, Mamta Rani, Sony Bharadwaj, Sushant Sharma, Gaurav Singh Chauhan, S. R. Dhakate, Bhanu Pratap Singh

In recent years, Dynamic mechanical analyser (DMA) has served as a principal tool for measurement of dynamic mechanical properties and glass transition temperature (Tg) of a material. However, absence of an appropriate reference material and abundances of methods available for Tg evaluation is often seen in significant variation from data to data. In this regard, development of an appropriate reference material for Tg measurement is important for research and industrial community. This work studies the behaviour of Polycarbonate specimens prepared via injection moulding for study of its dynamic mechanical properties including storage modulus, loss modulus, and Tan δ w.r.t. temperature. Tg was evaluated from peaks and inflexion points of storage modulus curve, loss modulus curve, and Tan δ curve as indicated. The obtained values were then tested statistically for standard deviation and uncertainty values. Measurement uncertainty of less than 0.2 °C was found to be associated in Tg measurement in all employed methods indicating that polycarbonate can be explored as a reference material in Tg measurement using DMA.



中文翻译:

用动态机械分析仪测量聚碳酸酯样品的玻璃化转变温度以开发参考材料

近年来,动态力学分析仪(DMA)已成为测量材料动态力学性能和玻璃化转变温度(Tg的主要工具。然而,由于数据之间存在显着差异,通常可以看到缺乏适当的参考材料和大量可用于T g评估的方法。在这方面,开发合适的T g测量参考材料对于研究和工业界非常重要。这项工作研究了通过注塑成型制备的聚碳酸酯样品的行为,以研究其动态机械性能,包括储能模量、损耗模量和 Tan δ wrt 温度。T g由所示的储能模量曲线、损耗模量曲线和 Tan δ曲线的峰值和拐点评估。然后对获得的值进行标准偏差和不确定性值的统计测试。在所有采用的方法中,发现小于 0.2 °C 的测量不确定度与T g测量相关,这表明聚碳酸酯可以作为使用 DMA进行T g测量的参考材料。

更新日期:2022-06-16
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