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.
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November 2022
Research Article|
November 01 2022
Dynamics of dual-junction-functionality associative polymer networks with ion and nanoparticle metal-coordinate cross-link junctions
Jake Song;
Jake Song
1
Department of Materials Science and Engineering, Massachusetts Institute of Technology
, 77 Massachusetts Avenue, Cambridge, Massachusetts 021392
Hatsopoulos Microfluids Laboratory, Department of Mechanical Engineering, Massachusetts Institute of Technology
, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139
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Qiaochu Li;
Qiaochu Li
1
Department of Materials Science and Engineering, Massachusetts Institute of Technology
, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139
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Pangkuan Chen;
Pangkuan Chen
1
Department of Materials Science and Engineering, Massachusetts Institute of Technology
, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139
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Bavand Keshavarz
;
Bavand Keshavarz
2
Hatsopoulos Microfluids Laboratory, Department of Mechanical Engineering, Massachusetts Institute of Technology
, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139
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Brian S. Chapman;
Brian S. Chapman
3
Department of Materials Science and Engineering, North Carolina State University
, 911 Partners Way, Raleigh, North Carolina 27606
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Joseph B. Tracy;
Joseph B. Tracy
3
Department of Materials Science and Engineering, North Carolina State University
, 911 Partners Way, Raleigh, North Carolina 27606
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Gareth H. McKinley
;
Gareth H. McKinley
a)
2
Hatsopoulos Microfluids Laboratory, Department of Mechanical Engineering, Massachusetts Institute of Technology
, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139
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Niels Holten-Andersen
Niels Holten-Andersen
b)
1
Department of Materials Science and Engineering, Massachusetts Institute of Technology
, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139b)Author to whom correspondence should be addressed; electronic mail: [email protected]
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a)
Electronic mail: [email protected]
b)Author to whom correspondence should be addressed; electronic mail: [email protected]
Note: This paper is part of the special issue on Double Dynamics Polymeric Networks
J. Rheol. 66, 1333–1345 (2022)
Article history
Received:
December 02 2021
Accepted:
February 24 2022
Citation
Jake Song, Qiaochu Li, Pangkuan Chen, Bavand Keshavarz, Brian S. Chapman, Joseph B. Tracy, Gareth H. McKinley, Niels Holten-Andersen; Dynamics of dual-junction-functionality associative polymer networks with ion and nanoparticle metal-coordinate cross-link junctions. J. Rheol. 1 November 2022; 66 (6): 1333–1345. https://doi.org/10.1122/8.0000410
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