Tough and solvent-proof polyamide-hydrazides containing aliphatic and aromatic supramolecular segments

Kong, Qingming; Guo, Longfei; Kaiqiang, Zhang

doi:10.1016/j.eurpolymj.2023.112303

Cited by 4 publications

(1 citation statement)

References 49 publications

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“…[3a] This method holds great promise for the design and development of super-tough supramolecular polymers, and it has been demonstrated in a polyamide system by Zhang and colleagues. [14] In their work, the toughening of linear polyamides was successfully enhanced by using aliphatic and aromatic supramolecular fragments to form MMSIs.…”

Section: The Trade-offs Between Mechanical Performance and Recyclabilitymentioning

confidence: 99%

Sustainable Supramolecular Polymers

Wang,

Meng,

Wang

2024

ChemPlusChem

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Polymer waste is a pressing issue that requires innovative solutions from the scientific community. As a beacon of hope in addressing this challenge, the concept of sustainable supramolecular polymers (SSPs) emerges. This article discusses challenges and efforts in fabricating SSPs. Addressing the trade‐offs between mechanical performance and sustainability, the ultra‐tough and multi‐recyclable supramolecular polymers are fabricated via tailoring mismatched supramolecular interactions. Additionally, the healing of kinetically inert polymer materials is realized through transient regulation of the interfacial reactivity. Furthermore, a possible development trajectory for SSPs is proposed, and the transient materials can be regarded as the next generation in this field. The evolution of SSPs promises to be a pivotal stride towards a regenerative economy, sparking further exploration and innovation in the realm of sustainable materials.

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Section: The Trade-offs Between Mechanical Performance and Recyclabilitymentioning

confidence: 99%

Sustainable Supramolecular Polymers

Wang,

Meng,

Wang

2024

ChemPlusChem

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Mismatched Supramolecular Interactions Facilitate the Reprocessing of Super‐Strong and Ultratough Thermoset Elastomers

Wang,

Zhang,

Zhang

et al. 2024

Advanced Materials

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Thermoset elastomers have been extensively applied in many fields because of their excellent mechanical strengths and durable characteristics, such as an excellent chemical resistance. However, in the context of environmental issues, the non‐recyclability of thermosets has become a major barrier to the further development of these materials. Here, we report a well‐tailored strategy to solve this problem by introducing mismatched supramolecular interactions (MMSIs) into a covalently cross‐linked poly(urethane‐urea) network with dynamic acylsemicarbazide moieties. The MMSIs significantly strengthen and toughen the thermoset elastomer by effectively dissipating energy and resisting external stress. In addition, the elastomer recycling efficiency is improved 2.7‐fold due to the superior reversibility of the MMSIs. The optimized thermoset elastomer, i.e., SPUUN‐IE, features outstanding characteristics, including an ultra‐high tensile strength (110.8 MPa), an unprecedented tensile toughness (1245.2 MJ m–3), as well as remarkable resistance to chemical media, creep, and damage. Most importantly, SPUUN‐IE exhibits an extraordinary multi‐recyclability, and the 4th recycling efficiency remains close to 100%. This scalable method promotes the development of thermosets with both high performance and excellent recyclability, thereby providing valuable guidance for addressing the issue of non‐recyclability from a molecular design standpoint.This article is protected by copyright. All rights reserved

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Light‐Driven Multidirectional Bending in Artificial Muscles

Madani,

Silva,

Baniasadi

et al. 2024

Advanced Materials

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Using light to drive polymer actuators can enable spatially selective complex motions, offering a wealth of opportunities for wireless control of soft robotics and active textiles. Here, the integration of photothermal components is reported into shape memory polymer actuators. The fabricated twist‐coiled artificial muscles show on‐command multidirectional bending, which can be controlled by both the illumination intensity, as well as the chirality, of the prepared artificial muscles. Importantly, the direction in which these artificial muscles bend does not depend on intrinsic material characteristics. Instead, this directionality is achieved by localized untwisting of the actuator, driven by selective irradiation. The reaction times of this bending system are significantly – at least two orders of magnitude – faster than heliotropic biological systems, with a response time up to one second. The programmability of the artificial muscles is further demonstrated for selective, reversible, and sustained actuation when integrated in butterfly‐shaped textiles, along with the capacity to autonomously orient toward a light source. This functionality is maintained even on a rotating platform, with angular velocities of 6°/s, independent of the rotation direction. These attributes collectively represent a breakthrough in the field of artificial muscles, intended to adaptive shape‐changing soft systems and biomimetic technologies.

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Tough and solvent-proof polyamide-hydrazides containing aliphatic and aromatic supramolecular segments

Cited by 4 publications

References 49 publications

Sustainable Supramolecular Polymers

Sustainable Supramolecular Polymers

Mismatched Supramolecular Interactions Facilitate the Reprocessing of Super‐Strong and Ultratough Thermoset Elastomers

Light‐Driven Multidirectional Bending in Artificial Muscles

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