Biobased Recyclable Rubbers With Shape Memory, Self-welding, and Damping Properties by Cross-Linking Epoxidized Natural Rubber with Succinic Anhydride,ACS Sustainable Chemistry & Engineering

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Biobased Recyclable Rubbers With Shape Memory, Self-welding, and Damping Properties by Cross-Linking Epoxidized Natural Rubber with Succinic Anhydride
ACS Sustainable Chemistry & Engineering ( IF 7.1 ) Pub Date : 2023-12-14 , DOI: 10.1021/acssuschemeng.3c07063
Yu Zou ₁ , Yi-Fan Yao ₁ , Rong Zhang ₁ , Yi-Hai Zhao ₁ , Jian Cao ₁ , Yun-Xiang Xu ₁

Affiliation

This study focuses on the development of green and high-performance recyclable polymers using cross-linked epoxidized natural rubber (ENR). ENR, derived from biobased natural rubber, offers reactive epoxy groups that make it an ideal raw material for creating recyclable materials. Succinic anhydride (SA) is employed as a cross-linking agent, forming dynamic ester bonds through ring-opening reactions with the epoxy groups. The resulting cross-linked ENR demonstrates excellent mechanical properties without the need for fillers (the tensile strength of ENR40+SA-10 reached up to 17.85 MPa), along with stable shape memory (shape fixed ratio > 97.0%, shape recovery ratio > 94.5%), high recyclability (the recovery ratios of tensile strength and elongation at break for ENR40+SA-10 reached 95% after two recycling circles), and self-welding properties. Moreover, the adjustable T_g values (−30 to 19 °C) and wide damping temperature range of the materials provide good damping characteristics, including those at room temperature. This simple and efficient cross-linking strategy offers a new approach for the production of high-performance ENR-based recyclable materials, which will potentially contribute to reducing environmental pollution and expending their applications in areas such as vibration damping and packaging.

中文翻译：

通过环氧化天然橡胶与丁二酸酐交联获得具有形状记忆、自熔接和阻尼性能的生物基可回收橡胶

本研究的重点是使用交联环氧化天然橡胶（ENR）开发绿色高性能可回收聚合物。ENR 源自生物基天然橡胶，具有反应性环氧基团，使其成为制造可回收材料的理想原材料。琥珀酸酐（SA）用作交联剂，通过与环氧基团的开环反应形成动态酯键。所得交联ENR在无需填料的情况下表现出优异的机械性能（ENR40+SA-10的拉伸强度高达17.85 MPa），以及稳定的形状记忆（形状固定率> 97.0％，形状恢复率> 94.5） %）、高回收性（ENR40+SA-10循环两次后拉伸强度和断裂伸长率恢复率达到95%）、自焊性。此外，材料的可调Tg值（-30至₁₉ °C）和宽阻尼温度范围提供了良好的阻尼特性，包括在室温下的阻尼特性。这种简单而高效的交联策略为生产基于 ENR 的高性能可回收材料提供了一种新方法，这将有助于减少环境污染并扩大其在减振和包装等领域的应用。

更新日期：2023-12-14

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