Biomass-derived UV-curable polymer with self-healing, multi-stimulus-responsive shape memory, and fluorescence

Guo, Shuchang; Bo, Caiying; Hu, Lihong; Zhang, Meng; Zhou, Yonghong; Yang, Xiaohui; Feng, Guodong; Jia, Puyou; Li, Shouhai

doi:10.1007/s10853-023-09302-9

Cited by 1 publication

(1 citation statement)

References 40 publications

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“…At the same time, compared with other similar engineering plastic shape memory materials, the PEN–PEG 2 -B 3 O 3 thermoset has the lowest shape memory temperature, as well as good recycling and repairability characteristics (Figure c). Finally, we compared the PEN–PEG 2 -B 3 O 3 thermoset with other reported boroxane materials on solvent resistance test, as shown in Table S4, the PEN–PEG 2 -B 3 O 3 thermoset showed a wider range of solvent resistance, and we believe that the PEN–PEG 2 -B 3 O 3 thermoset can be used in more complex environments, which is not the case with other shape memory materials based on dynamic boroxines. − …”

Section: Resultsmentioning

confidence: 99%

Self-Healing, Recyclable, and Solvent Resistant Poly(aryl ether nitrile) Triple Shape Memory Thermosets Cross-Linked with Dynamic Boroxines

He,

Yang,

Lai

et al. 2024

ACS Appl. Polym. Mater.

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Shape memory polymers, which possess exceptional mechanical properties, ease of processing, facile recycling capabilities, and excellent self-healing properties, are critically needed in fields such as smart actuators, biomedicine, electronic devices, and aerospace; yet they remain a challenging research topic. In this study, we propose an innovative approach to overcome these challenges by incorporating soft segments/activation switching monomers and boroxines into poly(aryl ether nitrile) (PEN). The resulting PEN−PEG-B 3 O exhibits high recovery (95%) and high immobilization (97%) while enabling triple shape memory functionality. Furthermore, the rigid structure of PEN contributes significantly to the material's strength, with a tensile strength of 51.6 MPa anhibits high recovery (95%) and high immobilization (97%) while enabling triple shape memory functionality. Furthermore, the rigid structure of PEN contributes significantly to the material's strength, with a tensile strength of 51.6 MPa and the Young's modulus of 681.7 MPa. Owing to the dynamic nature of the boroxine linkages, PEN−PEG-B 3 O 3 thermosets can be processed in various shapes and can be conveniently reprocessed using a mixed solvent of DMF and ethanol (DMF/EtOH = 8/2, v/v) while maintaining their original mechanical strength. Additionally, these thermosets demonstrate remarkable stability against solvents; they maintain their performance after being immersed in acidic, alkaline, and saline solutions for 90 days.

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