Recyclable photoluminescent elastomer incorporating carboxyl-functionalized fluorescent powder via dynamic covalent cross-linking,Polymer Composites

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Recyclable photoluminescent elastomer incorporating carboxyl-functionalized fluorescent powder via dynamic covalent cross-linking
Polymer Composites ( IF 4.8 ) Pub Date : 2023-06-06 , DOI: 10.1002/pc.27446
Biao Xia ₁ , Cheng Shi ₁ , Zhou Li ₁ , Tengfei Lin ₁ , Min Gao ₁ , Chunlin Zhao ₁ , Xiao Wu ₁ , Cong Lin ₁ , Jinyun Wang ₂

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The rapid development of photochromic devices has stimulated great enthusiasm for the design and preparation of luminescent materials. Introducing fluorescent powder ZnS:Cu into the cross-linked polymer matrix is an efficient and simple method to obtain photochromic materials with excellent comprehensive performance. However, the traditional method is to directly introduce fluorescent powder into the polymer matrix by physical mixing. This not only increases the internal defects of the polymer and reduces the mechanical properties, but also hinders the fluorescent powder from absorbing external energy and reduces its luminescence efficiency. In addition, few studies have focused on recyclable photochromic luminescent materials. Inspired by dynamic covalent cross-linking technology, this paper first modified fluorescent powder with 3-mercaptopropionic acid and then introduced it into epoxy silicone rubber to prepare recyclable luminescent elastomer. Compared with traditional physical blending, the mechanical properties and luminescence performance of the covalently bonded luminescent elastomer were improved. Excellent mechanical properties and luminescence performance were maintained in multiple recycling processes. This paper provides a feasible and simple scheme for the preparation of recyclable luminescent elastomers, paving the way for the recycling and long-term utilization of photochromic luminescent materials.

中文翻译：

通过动态共价交联掺入羧基官能化荧光粉的可回收光致发光弹性体

光致变色器件的快速发展激发了人们对发光材料设计和制备的极大热情。将荧光粉ZnS:Cu引入到交联聚合物基体中是获得综合性能优异的光致变色材料的一种高效、简单的方法。然而，传统的方法是通过物理混合的方式将荧光粉直接引入到聚合物基体中。这不仅增加了聚合物的内部缺陷，降低了力学性能，而且阻碍了荧光粉吸收外部能量，降低了其发光效率。此外，很少有研究关注可回收的光致变色发光材料。受动态共价交联技术的启发，本文首先用3-巯基丙酸对荧光粉进行改性，然后将其引入到环氧硅橡胶中制备可回收的发光弹性体。与传统的物理共混相比，共价键发光弹性体的力学性能和发光性能均得到提高。在多次回收过程中仍保持优异的机械性能和发光性能。本文为可回收的发光弹性体的制备提供了可行且简单的方案，为光致变色发光材料的回收和长期利用铺平了道路。共价键发光弹性体的力学性能和发光性能得到改善。在多次回收过程中仍保持优异的机械性能和发光性能。本文为可回收的发光弹性体的制备提供了可行且简单的方案，为光致变色发光材料的回收和长期利用铺平了道路。共价键发光弹性体的力学性能和发光性能得到改善。在多次回收过程中仍保持优异的机械性能和发光性能。本文为可回收的发光弹性体的制备提供了可行且简单的方案，为光致变色发光材料的回收和长期利用铺平了道路。

更新日期：2023-06-06

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