Recyclable polybutadiene elastomer based on dynamic imine bond. Issue 12 (16th March 2017)

• Record Type: Journal Article
• Authors: Zhang, Huan; Wang, Dong; Liu, Wenxing; Li, Pengchong; Liu, Jiajian; Liu, Chenyang; Zhang, Jiawei; Zhao, Ning; Xu, Jian
• Is Part Of: Journal of polymer science. Volume 55:Issue 12(2017)
• Page Start: 2011
• Page End: 2018
• Publication Date: 2017-03-16
• Subjects: dynamic -- imine bond -- polybutadiene -- recyclable -- solvent resistance; 547
• DOI: 10.1002/pola.28577
• Languages: English
• ISSNs: 0887-624X

Abstract

ABSTRACT: Catalyst‐free recyclable polybutadiene (PB) elastomer cross‐linked by dynamic imine bonds is prepared by the reaction between amine functionalized PB and aldehyde cross‐linkers. The dynamic nature of imine bond is investigated by rheometry and creep‐recovery experiments. The cross‐linking degrees are regulated by incorporating different amount of aldehyde, and their influence on the cross‐linked elastomers is investigated in detail. The temperature‐induced imine exchange reactions enable recycling of the cross‐linked PB elastomers and their mechanical properties are almost unchanged after several cycles. It is important to note that the elastomers also show excellent solvent resistance even at high temperature. The good mechanical properties, solvent resistance and recycling ability of the resultant PB elastomer demonstrate the superiority of the imine bonds in the design of recyclable polymers. © 2017 Wiley Periodicals, Inc. J. Polym. Sci., Part A: Polym. Chem.2017, 55, 2011–2018 Abstract : Thermoreversible PB elastomers with good mechanical properties and solvent resistance cross‐linked by imine bonds were demonstrated. More importantly, the as‐prepared elastomer can be thermally recycled by taking advantage of the dynamic nature of imine bond.