材料科学
聚合物
天然橡胶
环氧树脂
复合材料
热稳定性
混合(物理)
酯交换
聚合物混合物
弹性体
复配
焊接
化学工程
有机化学
共聚物
催化作用
化学
物理
量子力学
工程类
作者
Shizhen Zhao,Hongkun Yang,Bin Zhao,Lifang Cao,Dong Wang,Thomas P. Russell
标识
DOI:10.1021/acsami.2c06916
摘要
Obtaining homogeneous blends of two covalently cross-linked polymers by mechanical mixing is not possible due to their permanent network topologies. Here, we demonstrate an effective route to prepare polymer blends from the common cross-linked epoxidized natural rubber (ENR) and epoxy resin vitrimer (EV) by mechanical mixing. Interfacial exchange reactions between these two networks occur by a dynamic transesterification. The as-prepared ENR-EV blends show excellent mechanical strength, extensibility, and thermal stability. Moreover, they also show typical vitrimeric properties, including self-healing, welding, and reprocessability. This work demonstrates a large-scale preparation of vitrimeric materials with high performance and versatility from commercially available polymers and affords a promising strategy to recycle both waste rubbers and resins.
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