Front Cover: A pneumatic relaxometer allows thermoplastic polyurethane elastomers to expand suddenly. Their morphology is monitored by SAXS. It is seen that the basic domain structure changes in a fraction of a second, whereas the stress relaxes much more slowly. Column heights indicate the scattering power Q. This is reported by Almut Stribeck and co‐workers in article number 2000386.

中文翻译：

---

快速应变步骤后热塑性聚氨酯弹性体的短期形态松弛

前盖：气动张弛仪使热塑性聚氨酯弹性体突然膨胀。它们的形态由SAXS监控。可以看出，基本的畴结构在几分之一秒内发生了变化，而应力的松弛则要慢得多。柱高表示散射功率Q。Almut Stribeck及其同事在文章编号2000386中对此进行了报道。