Assembling of Reprocessable Polybutadiene-Based Vitrimers with High Strength and Shape Memory via Catalyst-Free Imine-Coordinated Boroxine

We propose a facile strategy to address this dilemma by introducing the exchangeable imine bond and N-coordinated boroxine into a polybutadiene -based network

Yinxin Yang; Lingyun Huang; Ruiyao Wu; Weifeng Fan; Quanquan Dai; Jianyun He; Chenxi Bai

2020

Scholarcy highlights

  • Vitrimers endow cross-linked polymers with malleability and reprocessability via exchange reactions
  • The Altmetric Attention Score is a quantitative measure of the attention that a research article has received online
  • We propose a facile strategy to address this dilemma by introducing the exchangeable imine bond and N-coordinated boroxine into a polybutadiene-based network
  • The dynamic network draws on the advantage of imine and N-coordinated boroxine, making the PB-based materials exhibit favorable malleability, mechanical property, reprocessability, and thermal-induced shape-memory behavior
  • FT-IR spectra of PB, PB-NH2, 2-FPB, BCA, 2-CPB, 2-APB, PB-IB-x, PB-B-10%, and PB-I-10%; 1H NMR spectra of PB, PB-NH2, 2-CPB, and 2-APB; DSC curves of PB, PB-NH2, and PB-IB-x; TGA curves and concrete values of PB-IB-x, PB-B-10%, and PB-I-10%; swelling test and the photos of PB-IB-x; frequency sweeps and DMA curves of PB-IB-x; stress-relaxation curves of PB-IB-10%; possible reaction mechanism of the single N-coordinated boroxine and imine bonds; photographs of origin and healed samples; comparison of tensile test data of PB-based materials; concrete values of the relaxation time of PB-IB-10%; comparison of the relaxation time between PB-IB-10% with the other vitrimers; comparison of mechanical properties of virgin and reprocessing PB-I-10%, PB-B-10%, and PB-IB-10%; and comparison of the property retention of boroxine-based materials treated by humidity
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