可回收，高粘接强度的小分子松香基环氧树脂，具有AIE性能

IF 2.1 3区化学 Q2 CHEMISTRY, ORGANIC

Tetrahedron Pub Date : 2025-05-17 DOI:10.1016/j.tet.2025.134732

Qian Wu , Peng Yang , Zhijun Ke , Hanwen Wang , Zehua Zhang , Boyi Zhang , Shenglin Li , Xiaoping Rao

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引用次数: 0

摘要

环氧树脂的使用总是需要石油基固化剂的帮助，以促进交联并产生不可逆的三维网络结构。然而，这一特点反过来又限制了其应用的可回收性，阻碍了可持续发展。创造一种耐用且可重复使用的环氧树脂粘合剂，能够承受温和的粘合条件，是一项重大挑战。以氢化丙烯酸松香（HAR）和环氧树脂（EPx）为原料，利用大空间位阻和低交联密度的氢化菲环结构，成功制备了新型松香基环氧树脂（HAR-EPx）。本研究制备的HAR-EPx具有优异的耐热性（Td = 354°C）、优异的紫外-可见光透射率等性能。HAR-EPx适用于无固化剂的胶粘剂，粘接条件温和（85°C, 1.5 min），机械性能高（粘接强度达4.306 MPa），可重复使用，即使经过6次循环也能保持80%以上的粘接强度。此外，它还表现出一个有趣的特性，即当受到紫外线激发时，它会发出固有的蓝绿色荧光，这归因于聚集诱导发射（AIE）。

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Recyclable, high adhesive strength small molecule rosin-based epoxy resin with AIE properties

The utilize of epoxy resins always necessitates the aid of petroleum-based curing agents to facilitate cross-linking and engender an irreversible tridimensional network structure. However, this characteristic, in turn, imposes the constraint of recyclability in their applications and hinders sustainable development. Creating a durable and repeatedly useable epoxy resin adhesive that can withstand mild bonding conditions lingers a significant challenge. In this work, a novel rosin-based epoxy resin (HAR-EP_x) was successfully prepared from hydrogenated acrylic rosin (HAR) and epoxy resin (EP_x) based on the structure of the hydrogenated phenanthrene ring with large steric hindrance and low cross-linking density. The HAR-EP_x prepared in this study exhibits several remarkable properties, such as outstanding heat resistance (T_d = 354 °C), exceptional UV–visible light transmittance. HAR-EP_x can be applied to adhesives without curing agents, and was characterized by mild bonding conditions (85 °C, 1.5 min), high mechanical properties (adhesion strength up to 4.306 MPa), and excellent reusability that retains over 80 % bonding strength even after undergoing 6 cycles. Moreover, it exhibits an intriguing characteristic, that is, it emits intrinsic cyan-green fluorescence when subjected to UV excitation, attributed to aggregation-induced emission (AIE).

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来源期刊

Tetrahedron 化学-有机化学

CiteScore

3.90

自引率

4.80%

发文量

439

审稿时长

34 days

期刊介绍： Tetrahedron publishes full accounts of research having outstanding significance in the broad field of organic chemistry and its related disciplines, such as organic materials and bio-organic chemistry. Regular papers in Tetrahedron are expected to represent detailed accounts of an original study having substantially greater scope and details than that found in a communication, as published in Tetrahedron Letters. Tetrahedron also publishes thematic collections of papers as special issues and ''Reports'', commissioned in-depth reviews providing a comprehensive overview of a research area.