Dynamics of dual-junction-functionality associative polymer networks with ion and nanoparticle metal-coordinate cross-link junctions
Name
8.0000410.pdf
Size
2.9 MB
Format
Adobe PDF
Checksum (MD5)
9b541920d66e4b10533b67690ab0f2f0
Author(s)
Song, Jake
Li, Qiaochu
Chen, Pangkuan
Keshavarz, Bavand
Chapman, Brian S.
Tracy, Joseph B.
McKinley, Gareth H.
Holten-Andersen, Niels
Date Issued
November 2022
Publisher
Society of Rheology
Citation
Song, Jake, Li, Qiaochu, Chen, Pangkuan, Keshavarz, Bavand, Chapman, Brian S. et al. 2022. "Dynamics of dual-junction-functionality associative polymer networks with ion and nanoparticle metal-coordinate cross-link junctions." 66 (6).
Version
Final published version
Abstract
We provide a canonical introduction to dual-junction-functionality associative polymer networks, which combine high and low functionality ( f) dynamic cross-link junctions to impart load-bearing, dissipation, and self-repairing ability to the network. This unique type of network configuration offers an alternative to traditional dual-junction networks consisting of covalent and reversible cross-links. The high- f junctions can provide load-bearing abilities similar to a covalent cross-link while retaining the ability to self-repair and concurrently confer stimuli-responsive properties arising from the high- f junction species. We demonstrate the mechanical properties of this design motif using metal-coordinating polymer hydrogel networks, which are dynamically cross-linked by different ratios of metal nanoparticle (high- f) and metal ion (low- f) cross-link junctions. We also demonstrate the spontaneous self-assembly of nanoparticle-cross-linked polymers into anisotropic sheets, which may be generalizable for designing dual-junction-functionality associative networks with low volume fraction percolated high- f networks.
Subjects
Mechanical Engineering
Mechanics of Materials
Condensed Matter Physics
General Materials Science
MIT Department
Massachusetts Institute of Technology. Department of Materials Science and Engineering
Massachusetts Institute of Technology. Department of Mechanical Engineering
Terms of Use
Creative Commons Attribution 4.0 International license
Persistent DSpace Link
DOI of Published Version
https://doi.org/10.1122/8.0000410
