AI 中文总结
本章从分子视角探讨聚合物玻璃力学响应，关注主动变形中链段动力学变化对力学性能的影响，为理解其变形特征提供了依据。
AI 中文摘要
聚合物玻璃的力学性能通常是确定特定应用最佳材料的关键。极硬的材料（高模量）对某些应用很重要，而避免因断裂导致的灾难性失效（高韧性）对另一些应用则更为关键。聚合物玻璃的力学性能取决于分子结构和诸多实验变量，包括温度与变形模式（拉伸、压缩或剪切）。本章从分子视角探讨聚合物玻璃的力学响应，尤其关注变形如何改变聚合物链段的重排速率，以及这一过程如何反过来影响材料的力学响应。研究表明，聚焦于动力学的变化能帮助理解聚合物玻璃变形的诸多重要特征。当然，非线性变形也会改变聚合物玻璃的结构，尽管这并非本章的主要重点，我们将在本章末尾对这些结构变化做一些说明。
英文摘要
The mechanical properties of polymer glasses are often critical in determining the best material for a particular application. Extremely stiff materials (high modulus) may be important for some applications while avoiding catastrophic failure due to fracture (high toughness) may be more important for others. The mechanical properties of a polymer glass will depend upon both molecular structure and many experimental variables, including temperature and the mode of deformation (tension, compression, or shear). In this chapter we discuss the mechanical response of polymer glasses from a molecular perspective. In particular, we consider how deformation changes the rate at which polymer segments rearrange and how this in turn influences the mechanical response of the material. It will be shown that this focus on the changes in dynamics provides an understanding of many important features of polymer glass deformation. Of course, it is also true that the structure of a polymer glass must be altered by nonlinear deformation. Although not a major focus, we will make some comments about these structural changes at the end of this chapter.
Comments12 figures, 65 references, 43 pages
Journal refChapter 10 in Polymer Glasses, edited by Connie Roth (Taylor and Francis) (2016) CRC Press. ISBN 9781498711876
