100% Bio-Based Polyamide with Temperature/Ultrasound Dually Triggered Reversible Cross-Linking

Weijun Huang, Jinglin Zhai, Changqi Zhang, Xin Hu, Ning Zhu, Kequan Chen, Kai Guo

Research output: Contribution to journalArticlepeer-review

19 Scopus citations

Abstract

Bio-based polyamides (100%) with responsive functionality were designed and synthesized by using biorenewable diamine and dicarboxylate. 1,5-Pentanediamine and dimethyl furan-2,5-dicarboxylate were chosen not only because of the biomass feedstock but also because of the reactivity of the furan rings. Enzymatic process enhanced the sustainability of these 100% bio-based furan-containing polyamides (PA5F). By regulating the temperature, PA5F was cross-linked at a low temperature via the Diels-Alder (DA) reaction and then was de-cross-linked at a high temperature. Alternatively, ultrasound exhibited a better performance in triggering the transformation of cross-linked polymers back to the original ones. The DA linkage could also be solidified by aromatization. The thermal properties were well controlled by reversible cross-linking. These 100% bio-based polyamides would open the window for the development of smart sustainable polymers with broad applications.

Original languageEnglish
Pages (from-to)13588-13594
Number of pages7
JournalIndustrial and Engineering Chemistry Research
Volume59
Issue number30
DOIs
StatePublished - 29 Jul 2020

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