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Ghosh A, Kumar S, Singh PP, Nandi S, Mandal M, Pradhan D, Khatua BB, Das RK. Dynamic Metal-Coordinated Adhesive and Self-Healable Antifreezing Hydrogels for Strain Sensing, Flexible Supercapacitors, and EMI Shielding Applications. ACS OMEGA 2024; 9:33204-33223. [PMID: 39100348 PMCID: PMC11292641 DOI: 10.1021/acsomega.4c04851] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/23/2024] [Revised: 07/03/2024] [Accepted: 07/08/2024] [Indexed: 08/06/2024]
Abstract
Dynamic metal-coordinated adhesive and self-healable hydrogel materials have garnered significant attention in recent years due to their potential applications in various fields. These hydrogels can form reversible metal-ligand bonds, resulting in a network structure that can be easily broken and reformed, leading to self-healing capabilities. In addition, these hydrogels possess excellent mechanical strength and flexibility, making them suitable for strain-sensing applications. In this work, we have developed a mechanically robust, highly stretchable, self-healing, and adhesive hydrogel by incorporating Ca2+-dicarboxylate dynamic metal-ligand cross-links in combination with low density chemical cross-links into a poly(acrylamide-co-maleic acid) copolymer structure. Utilizing the reversible nature of the Ca2+-dicarboxylate bond, the hydrogel exhibited a tensile strength of up to ∼250 kPa and was able to stretch to 15-16 times its original length. The hydrogel exhibited a high fracture energy of ∼1500 J m-2, similar to that of cartilage. Furthermore, the hydrogel showed good recovery, fatigue resistance, and fast self-healing properties due to the reversible Ca2+-dicarboxylate cross-links. The presence of Ca2+ resulted in a highly conductive hydrogel, which was utilized to design a flexible resistive strain sensor. This hydrogel can strongly adhere to different substrates, making it advantageous for applications in flexible electronic devices. When adhered to human body parts, the hydrogel can efficiently detect limb movements. The hydrogel also exhibited excellent performance as a solid electrolyte for flexible supercapacitors, with a capacitance of ∼260 F/g at 0.5 A/g current density. Due to its antifreezing and antidehydration properties, this hydrogel retains its flexibility at subzero temperatures for an extended period. Additionally, the porous network and high water content of the hydrogel impart remarkable electromagnetic attenuation properties, with a value of ∼38 dB in the 14.5-20.5 GHz frequency range, which is higher than any other hydrogel without conducting fillers. Overall, the hydrogel reported in this study exhibits diverse applications as a strain sensor, solid electrolyte for flexible supercapacitors, and efficient material for electromagnetic attenuation. Its multifunctional properties make it a promising candidate for use in various fields as a state-of-the-art material.
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Affiliation(s)
- Ashis Ghosh
- Materials
Science Centre, Indian Institute of Technology
Kharagpur, Kharagpur 721302, India
| | - Sudhir Kumar
- Materials
Science Centre, Indian Institute of Technology
Kharagpur, Kharagpur 721302, India
| | - Prem Pal Singh
- Materials
Science Centre, Indian Institute of Technology
Kharagpur, Kharagpur 721302, India
| | - Suvendu Nandi
- School
of Medical Science and Technology, Indian
Institute of Technology Kharagpur, Kharagpur 721302, India
| | - Mahitosh Mandal
- School
of Medical Science and Technology, Indian
Institute of Technology Kharagpur, Kharagpur 721302, India
| | - Debabrata Pradhan
- Materials
Science Centre, Indian Institute of Technology
Kharagpur, Kharagpur 721302, India
| | - Bhanu Bhusan Khatua
- Materials
Science Centre, Indian Institute of Technology
Kharagpur, Kharagpur 721302, India
| | - Rajat Kumar Das
- Materials
Science Centre, Indian Institute of Technology
Kharagpur, Kharagpur 721302, India
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Shao J, Dong X, Wang D. Stretchable Self-Healing Plastic Polyurethane with Super-High Modulus by Local Phase-Lock Strategy. Macromol Rapid Commun 2023; 44:e2200299. [PMID: 35656715 DOI: 10.1002/marc.202200299] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2022] [Revised: 05/15/2022] [Indexed: 01/11/2023]
Abstract
In this work, a multiblock polyurethane (PU-Im) consisting of polyether and polyurethane segments with imidazole dangling groups is demonstrated, which can further coordinate with Ni2+ . By controlling the ligand content and metal-ligand stoichiometry ratio, PU-Im-Ni complex with vastly different mechanical behavior can be obtained. The elastomer PU-2Im-Ni has extraordinary mechanical strength (61MPa) and excellent toughness (420 MJ m-3 ), but the plastic PU-4Im-Ni exhibits super-high modulus (515 MPa), strength (63 MPa), and good stretchability (≈800%). The metal-ligand interaction between polyurethane segments and Ni2+ is proved by Raman spectra, dynamic mechanical analysis (DMA), and transmission electron microscopy (TEM). The polyurethane segments domain formed by microphase separation is dynamically "locked" by Ni2+ coordinated with imidazole, revealing a local phase-lock effect. The phase-locking hard domains reinforce the PU-Im-Ni complex and maintain stimuli-responsive self-healing ability, while the free polyether segments provide stretchability. Primarily, the water environment with plasticization effect serves as an effective and eco-friendly self-healing approach for PU-Im-Ni plastic. With the excellent mechanical performance, thermal/aquatic self-healing ability, and unique damping properties, the PU-Im-Ni complexes show potential applications in self-healing engineering plastic and cushion protection fields.
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Affiliation(s)
- Jianming Shao
- Beijing National Laboratory for Molecular Science, CAS Key Laboratory of Engineering Plastics, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, P. R. China.,University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Xia Dong
- Beijing National Laboratory for Molecular Science, CAS Key Laboratory of Engineering Plastics, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, P. R. China.,University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Dujin Wang
- Beijing National Laboratory for Molecular Science, CAS Key Laboratory of Engineering Plastics, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, P. R. China.,University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
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Remarkably flexible 2,2′:6′,2″-terpyridines and their group 8–10 transition metal complexes – Chemistry and applications. Coord Chem Rev 2022. [DOI: 10.1016/j.ccr.2022.214426] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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Ghosh A, Panda P, Ganguly D, Chattopadhyay S, Das RK. Dynamic metal–ligand cross‐link promoted mechanically robust and
pH
responsive hydrogels for shape memory, programmable actuation and resistive sensing application. J Appl Polym Sci 2022. [DOI: 10.1002/app.52483] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Ashis Ghosh
- Materials Science Centre Indian Institute of Technology Kharagpur Kharagpur India
| | - Prachishree Panda
- Materials Science Centre Indian Institute of Technology Kharagpur Kharagpur India
| | - Debabrata Ganguly
- Rubber Technology Centre Indian Institute of Technology Kharagpur Kharagpur India
| | | | - Rajat K. Das
- Materials Science Centre Indian Institute of Technology Kharagpur Kharagpur India
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Wang J, Qu J, Liu Y, Wang S, Liu X, Chen Y, Qi P, Miao G, Liu X. “Crocodile skin” ultra-tough, rapidly self-recoverable, anti-dry, anti-freezing, MoS2-based ionic organohydrogel as pressure sensors. Colloids Surf A Physicochem Eng Asp 2021. [DOI: 10.1016/j.colsurfa.2021.126458] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Hong X, Ding H, Li J, Xue Y, Sun L, Ding F. Poly(acrylamide‐co‐acrylic acid)/chitosan semi‐interpenetrating hydrogel for pressure sensor and controlled drug release. POLYM ADVAN TECHNOL 2021. [DOI: 10.1002/pat.5317] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Affiliation(s)
- Xiaoyan Hong
- College of Chemistry and Materials Science, Fujian Key Laboratory of Polymer Science Fujian Normal University Fuzhou China
| | - Hao Ding
- Polymer Program, Institute of Materials Science University of Connecticut Storrs Connecticut USA
- Department of Chemical and Biomolecular Engineering University of Connecticut Storrs Connecticut USA
| | - Jiao Li
- College of Chemistry and Materials Science, Fujian Key Laboratory of Polymer Science Fujian Normal University Fuzhou China
| | - Yuanyuan Xue
- College of Chemistry and Materials Science, Fujian Key Laboratory of Polymer Science Fujian Normal University Fuzhou China
| | - Luyi Sun
- Polymer Program, Institute of Materials Science University of Connecticut Storrs Connecticut USA
- Department of Chemical and Biomolecular Engineering University of Connecticut Storrs Connecticut USA
| | - Fuchuan Ding
- College of Chemistry and Materials Science, Fujian Key Laboratory of Polymer Science Fujian Normal University Fuzhou China
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Bej S, Dhayani A, Vemula P, Ramakrishnan S. Fine-Tuning Crystallization-Induced Gelation in Amphiphilic Double-Brush Polymers. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2021; 37:1788-1798. [PMID: 33497235 DOI: 10.1021/acs.langmuir.0c03111] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
A series of amphiphilic double-brush polymers based on itaconate diesters were synthesized with the objective of tailoring the thermal and mechanical properties of hydrogels formed by them; the amphiphilic itaconate diesters carried an MPEG350 segment and an alkyl chain, whose length was varied from C12 to C18. As was reported by us earlier (Macromolecules 2017, 50, 5004), the formation of the hydrogel was due to the crystallization of alkyl segments, as confirmed by the match of the rheological gel-to-sol transition with that of differential scanning calorimetry melting transition of the gel. In an effort to fine-tune the hydrogel-melting temperature and its strength, we varied the length of the alkyl chain length while keeping the hydrophilic segment length constant at MPEG350; apart from varying the alkyl chain length, an oxyethylene spacer was incorporated to examine the effect of decoupling the alkyl side-chain crystallization from the backbone. With these modifications, the melting temperature of the hydrogel was varied from 30 to 56 °C. Likewise, the strength of the hydrogel, as reflected by its storage modulus, varied from around 220 to 970 Pa; the softer gels typically exhibited a slightly larger critical shear strain beyond which the gel transformed into a sol. The thermal and shear-induced gel-to-sol transitions were reversible; however, the modulus after the shear-induced transition did not fully recover instantly (∼80%), suggesting that the formation of the extended gel network is slow. Further fine-tuning could be achieved by copolymerization of two different amphiphilic itaconate monomers, namely, those with C16 and C18, which provided an intermediate gel-melting temperature; however, co-gelation of the two preformed homopolymer gels yielded two distinct gel-melting transitions. Thus, this class of tuneable stimuli-responsive polymeric hydrogels prepared from biobenign components, namely, itaconic acid, 1-alkanols, and MPEGs, could serve as potential candidates for biomedical applications.
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Affiliation(s)
- Sujoy Bej
- Department of Inorganic and Physical Chemistry, Indian Institute of Science, Bangalore 560012, India
| | - Ashish Dhayani
- Institute for Stem Cell Biology and Regenerative Medicine (InStem), UAS-GKVK Post, Bellary Road, Bangalore 560065, India
- School of Chemical and Biotechnology, SASTRA University, Thanjavur, 613401 Tamil Nadu, India
| | - Praveen Vemula
- Institute for Stem Cell Biology and Regenerative Medicine (InStem), UAS-GKVK Post, Bellary Road, Bangalore 560065, India
| | - S Ramakrishnan
- Department of Inorganic and Physical Chemistry, Indian Institute of Science, Bangalore 560012, India
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