封面图片，第61卷第20期

IF 2.702 Q1 Materials Science

Journal of Polymer Science Part A: Polymer Chemistry Pub Date : 2023-10-15 DOI:10.1002/pol.20230694

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引用次数: 0

摘要

芳香族聚酰胺纤维（如Kevlar®）在硬度和强度方面突破了合成聚合物的极限，用于要求苛刻的应用。损伤机制和裂纹扩展在现场观察到，并揭示了整个纤维长度上的广泛损伤。这些观察结果使得绘制一个新的断裂场景成为可能。为了阐明微纤维协同性在断裂韧性中的关键作用，对单根纤维施加轻微的扭曲，以促进微纤维之间的弯曲和摩擦接触。统计断裂分析证明了这种扭转对早期失效事件的有益影响。Alba Marcelan创作了封面图片。DOI:10.1002/pol.20230400

本文章由计算机程序翻译，如有差异，请以英文原文为准。

Cover Image, Volume 61, Issue 20

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Cover Image, Volume 61, Issue 20

Pushing the limits of synthetic polymers in terms of stiffness and strength, aromatic polyamide fibers – like Kevlar® – are used for demanding applications. Damage mechanisms and crack propagation are observed in situ and unveil a widespread damage over the entire length of the fiber. These observations make it possible to draw a novel scenario of fracture. To shed light on the crucial role of microfibril cooperativity in fracture toughness, a slight twist is applied to the single fiber to promote tortuosity and frictional contacts between microfibrils. Statistical fracture analysis demonstrated the beneficial impact of such torsion on early failure events. Alba Marcellan created the cover image. DOI: 10.1002/pol.20230400

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来源期刊

Journal of Polymer Science Part A: Polymer Chemistry 化学-高分子科学

CiteScore

5.20

自引率

0.00%

发文量

审稿时长

1.8 months

期刊介绍： Part A: Polymer Chemistry is devoted to studies in fundamental organic polymer chemistry and physical organic chemistry. This includes all related topics (such as organic, bioorganic, bioinorganic and biological chemistry of monomers, polymers, oligomers and model compounds, inorganic and organometallic chemistry for catalysts, mechanistic studies, supramolecular chemistry aspects relevant to polymer...