Fan, J. C.; Xu, Y. J. Analysis of key issues in the experiment of measuring the glass transition temperature of polymers using dilatometer. Polym. Bull. (in Chinese), 2024, 37(10), 1499–1502
Fan, J. C.; Xu, Y. J. Analysis of key issues in the experiment of measuring the glass transition temperature of polymers using dilatometer. Polym. Bull. (in Chinese), 2024, 37(10), 1499–1502 DOI: 10.14028/j.cnki.1003-3726.2024.24.119.
marking the transition from the mobile state to the frozen state of polymer chain segments. It also serves as a crucial indicator for measuring the operating temperature of non-crystalline polymers. The dilatometry method for determining the
T
g
of polymers is helpful for students’ deepened understanding of the glass transition and the “free volume theory”. However
experimental failures are often encountered during the teaching process. Based on the experimental data
this article analyzed the two key issues that affect the experiment
both objectively and subjectively
and proposed different measures to improve the success rate of the experiment when using glycerol and ethylene glycol as filling reagents
respectively. This article aims to provide a reference for teac
hers and students in the major of the polymer materials and engineering.
关键词
高分子物理实验膨胀计玻璃化转变温度
Keywords
Polymer physics experimentDilatometryGlass transition temperature