Decrosslinking of zinc diacrylate‐cured epoxidized natural rubber via selective cleavage of carbon–oxygen bond,Journal of Applied Polymer Science

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Decrosslinking of zinc diacrylate‐cured epoxidized natural rubber via selective cleavage of carbon–oxygen bond
Journal of Applied Polymer Science ( IF 2.7 ) Pub Date : 2020-03-03 , DOI: 10.1002/app.49175
Tengfei Lin ₁ , Jinhuang Ke ₁ , Jinyun Wang ₁ , Cong Lin ₁ , Xiao Wu ₁

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The decrosslinking for zinc diacrylate (ZDA)‐cured epoxidized natural rubber is successfully achieved by using the AlCl₃/toluene as the decrosslinking system. The decrosslinking mechanism via selective cleavage of CO bonds of the crosslinks is revealed. Furthermore, the characterizations on the model compounds demonstrate that the cleavage of CO bonds can only occur in the ether groups, which the oxygen atoms are adjacent to the tertiary carbons. More importantly, the reclaimed rubber which possessed excellent elasticity can be recompounded and recured. The revulcanized rubber exhibits good mechanical property. This study provides a unique insight into efficient decrosslinking and recycling diene‐based rubber.

中文翻译：

二丙烯酸锌固化的环氧化天然橡胶通过碳-氧键的选择性解链交联

通过使用AlCl ₃ /甲苯作为解交联体系，成功实现了二丙烯酸锌（ZDA）固化的环氧化天然橡胶的解交联。经由的Ç选择性裂解的解交联机制的交联的O键被揭示。此外，模型化合物的表征表明，CO键的裂解只能发生在氧原子与叔碳相邻的醚基中。更重要的是，具有优异弹性的再生橡胶可以被复合和固化。硫化橡胶表现出良好的机械性能。这项研究为有效地解交联和回收基于二烯的橡胶提供了独特的见解。

更新日期：2020-03-03

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