Macromolecularly Engineered Thermoreversible Heterogeneous Self-Healable Networks Encapsulating Reactive Multidentate Block Copolymer-Stabilized Carbon Nanotubes
| Autor: | Jung Kwon Oh, Arman Moini Jazani, Zhibin Ye, Hannes Hase, Shubham Bhagat, Twinkal Patel, Ingo Salzmann, Pothanagandhi Nellepalli, Ge Zhang |
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| Rok vydání: | 2020 |
| Předmět: |
Materials science
Polymers and Plastics Polymers Polyurethanes 02 engineering and technology Carbon nanotube 010402 general chemistry 01 natural sciences Dissociation (chemistry) law.invention chemistry.chemical_compound law Materials Chemistry Copolymer Polyurethane Nanotubes Carbon Organic Chemistry Electric Conductivity Chemical modification 021001 nanoscience & nanotechnology Elasticity 0104 chemical sciences Chemical engineering chemistry Covalent bond Self-healing 0210 nano-technology Macromolecule |
| Zdroj: | Macromolecular rapid communications. 42(12) |
| ISSN: | 1521-3927 |
| Popis: | The development of heterogeneous covalent adaptable networks (CANs) embedded with carbon nanotubes (CNTs) that undergo reversible dissociation/recombination through thermoreversibility has been significantly explored. However, the carbon nanotube (CNT)-incorporation methods based on physical mixing and chemical modification could result in either phase separation due to structural incompatibility or degrading conjugation due to a disruption of π-network, thus lowering their intrinsic charge transport properties. To address this issue, the versatility of a macromolecular engineering approach through thermoreversibility by physical modification of CNT surfaces with reactive multidentate block copolymers (rMDBCs) is demonstrated. The formed CNTs stabilized with rMDBCs (termed rMDBC/CNT colloids) bearing reactive furfuryl groups is functioned as a multicrosslinker that reacts with a polymaleimide to fabricate robust heterogeneous polyurethane (PU) networks crosslinked through dynamic Diels-Alder (DA)/retro-DA chemistry. Promisingly, the fabricated PU network gels in which CNTs through rMDBC covalently embedded are flexible and robust to be bendable as well as exhibit self-healing elasticity and enhanced conductivity. |
| Databáze: | OpenAIRE |
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