Facile Preparation of Polyimine Vitrimers with Enhanced Creep Resistance and Thermal and Mechanical Properties via Metal Coordination
- Sheng WangSheng WangKey Laboratory of Bio-based Polymeric Materials Technology and Application of Zhejiang Province, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, P. R. ChinaUniversity of Chinese Academy of Sciences, Beijing 100049, P. R. ChinaMore by Sheng Wang,
- Songqi Ma*Songqi Ma*(S.M.) Email [email protected]; Tel 86-574-87619806.Key Laboratory of Bio-based Polymeric Materials Technology and Application of Zhejiang Province, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, P. R. ChinaMore by Songqi Ma,
- Qiong LiQiong LiKey Laboratory of Bio-based Polymeric Materials Technology and Application of Zhejiang Province, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, P. R. ChinaUniversity of Chinese Academy of Sciences, Beijing 100049, P. R. ChinaMore by Qiong Li,
- Xiwei XuXiwei XuKey Laboratory of Bio-based Polymeric Materials Technology and Application of Zhejiang Province, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, P. R. ChinaMore by Xiwei Xu,
- Binbo WangBinbo WangKey Laboratory of Bio-based Polymeric Materials Technology and Application of Zhejiang Province, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, P. R. ChinaMore by Binbo Wang,
- Kaifeng HuangKaifeng HuangKey Laboratory of Bio-based Polymeric Materials Technology and Application of Zhejiang Province, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, P. R. ChinaMore by Kaifeng Huang,
- Yanlin liuYanlin liuKey Laboratory of Bio-based Polymeric Materials Technology and Application of Zhejiang Province, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, P. R. ChinaMore by Yanlin liu, and
- Jin ZhuJin ZhuKey Laboratory of Bio-based Polymeric Materials Technology and Application of Zhejiang Province, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, P. R. ChinaMore by Jin Zhu
Abstract
Vitrimers undergoing dynamic bond exchange enable reprocessing and recycle of thermosets. However, vitrimers are susceptible to creep, leading to their poor dimensional stability, which limits their applications. Here, a facile method via integration of metal complexes was utilized to address this issue, and cross-linked polyimine was selected as an example of vitrimer. Three different metal complexes were introduced into a polyimine vitrimer via a one-pot preparation involving the formation of metal complexes and cross-linking of polyimine. The addition of 0.5 mol % Cu2+ relative to imine bond reduced creep degree from 30% to 20% at 60 °C, and the creep resistance was enhanced with increasing Cu2+ content. Loading 5 mol % Cu2+ increased the initial creep temperature from 60 to about 100 °C and raised the Arrhenius activation energy (Ea) for stress relaxation from 52.3 to 67.7 kJ mol–1. The ability of different metal complexes to suppress creep followed the order of Fe3+ > Cu2+ > Mg2+, and the initial creep temperature reached around 120 °C for vitrimer with 5 mol % of Fe3+. Meanwhile, the polyimine–metal complex vitrimers still exhibited excellent reprocessing recyclability. Moreover, the introduction of coordination structures enhanced the thermal and mechanical properties, solvent, and acid resistance. Thus, metal coordination is an efficient approach to achieve high-temperature creep resistance, excellent thermal and mechanical properties, and chemical stability for vitrimers based on the Schiff base.
Cited By
This article is cited by 5 publications.
- Sybren K. Schoustra, Joshua A. Dijksman, Han Zuilhof, Maarten M. J. Smulders. Molecular control over vitrimer-like mechanics – tuneable dynamic motifs based on the Hammett equation in polyimine materials. Chemical Science 2021, 12 (1) , 293-302. https://doi.org/10.1039/D0SC05458E
- Soon-Hyeok Hwang, Tae-Lim Choi. Tandem diaza-Cope rearrangement polymerization: turning intramolecular reaction into powerful polymerization to give enantiopure materials for Zn 2+ sensors. Chemical Science 2021, 48 https://doi.org/10.1039/D0SC06138G
- Joseph M Dennis, Alice M Savage, Randy A Mrozek, Joseph L Lenhart. Stimuli‐responsive mechanical properties in polymer glasses: challenges and opportunities for defense applications. Polymer International 2020, 5 https://doi.org/10.1002/pi.6154
- Xiaohong Liu, Liyan Liang, Maoping Lu, Xuan Song, Hehua Liu, Guoyang Chen. Water-resistant bio-based vitrimers based on dynamic imine bonds: Self-healability, remodelability and ecofriendly recyclability. Polymer 2020, 210 , 123030. https://doi.org/10.1016/j.polymer.2020.123030
- Qiong Li, Songqi Ma, Na Lu, Jianfan Qiu, Jiale Ye, Yanlin Liu, Sheng Wang, Yingying Han, Binbo Wang, Xiwei Xu, Hongzhi Feng, Jin Zhu. Concurrent thiol–ene competitive reactions provide reprocessable, degradable and creep-resistant dynamic–permanent hybrid covalent networks. Green Chemistry 2020, 22 (22) , 7769-7777. https://doi.org/10.1039/D0GC02823A