研究压力对紫外线诱导醋酸纤维素降解的影响：综合实验表征

IF 3.4 3区工程技术 Q1 MECHANICS

International Journal of Solids and Structures Pub Date : 2024-10-03 DOI:10.1016/j.ijsolstr.2024.113086

Keven Alkhoury , Chi Zhang , Guangliang Liu , Kathleen McEnnis , Laurence Brassart , Siva P.V. Nadimpalli , Shawn A. Chester

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引用次数: 0

摘要

可再生和可降解聚合物已出现在从普通餐具到高科技医疗设备等各种日常应用中。然而，目前的文献缺乏对降解引起的机械行为变化的全面实验表征。在这项研究中，我们描述了光降解引起的微观化学变化以及由此产生的应力对醋酸纤维素机械行为的影响，醋酸纤维素是一种可再生、可降解的聚合物，被广泛应用于各种消费品中。具体来说，我们在 (i) 无牵引条件和 (ii) 外加应力条件下对这种聚合物进行光降解。这项研究的一个重要发现是，在光降解过程中，这种材料会发生链断裂，从而影响其机械性能，并可能受到外加应力的进一步影响。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

Investigating the influence of stress on UV-induced degradation in cellulose acetate: A comprehensive experimental characterization

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Investigating the influence of stress on UV-induced degradation in cellulose acetate: A comprehensive experimental characterization

Renewable and degradable polymers have emerged in everyday applications ranging from mundane eating utensils to high-tech medical devices. However, the current literature lacks a thorough experimental characterization of the mechanical behavior change due to degradation. In this work, we characterize the microscopic chemical changes due to photo-degradation and resulting stress effects on the mechanical behavior of cellulose acetate, a renewable and degradable polymer that is used in various consumer products. Specifically, we photo-degrade this polymer under (i) traction-free conditions and (ii) under applied stress. A key finding of this work is that upon photo-degradation, this material undergoes chain scission, which affects its mechanical properties and may be further affected by the applied stress.

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来源期刊

International Journal of Solids and Structures 物理-力学

CiteScore

6.70

自引率

8.30%

发文量

405

审稿时长

70 days

期刊介绍： The International Journal of Solids and Structures has as its objective the publication and dissemination of original research in Mechanics of Solids and Structures as a field of Applied Science and Engineering. It fosters thus the exchange of ideas among workers in different parts of the world and also among workers who emphasize different aspects of the foundations and applications of the field. Standing as it does at the cross-roads of Materials Science, Life Sciences, Mathematics, Physics and Engineering Design, the Mechanics of Solids and Structures is experiencing considerable growth as a result of recent technological advances. The Journal, by providing an international medium of communication, is encouraging this growth and is encompassing all aspects of the field from the more classical problems of structural analysis to mechanics of solids continually interacting with other media and including fracture, flow, wave propagation, heat transfer, thermal effects in solids, optimum design methods, model analysis, structural topology and numerical techniques. Interest extends to both inorganic and organic solids and structures.