深入剖析高分子物理中自由体积的科学内涵、测试方法及其应用

doi:10.12461/PKU.DXHX202403069

Abstract

Abstract: The concept of free volume originated from the study of liquid viscosity and was later utilized by Fox and Flory in the analysis of the glass transition in polymer materials, establishing itself as a crucial tool for understanding various physical phenomena in polymers. However, there is currently a lack of comprehensive discussion on free volume in educational contexts. This paper provides an overview of the origin, definition, and applications of free volume, explores different testing methods, and investigates the relationship between free volume and the physical properties of polymers. The study aims to deepen students’ understanding of the free volume concept, promote a comprehensive grasp of polymer physical processes, and inspire interest and enthusiasm for scientific research.

Key words: Polymer physics, Free volume, Glass transition temperature, Viscosity, Mechanical properties

Chengyi Xiao, Xiaoli Sun, Chen Zhang, Weiwei Li. An In-Depth Analysis of the Scientific Connotations, Testing Methods, and Applications of Free Volume in Polymer Physics[J].University Chemistry, 2025, 40(4): 33-45.

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An In-Depth Analysis of the Scientific Connotations, Testing Methods, and Applications of Free Volume in Polymer Physics

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