Stretchable and Self-Healable Poly(styrene-<i>co</i>-acrylonitrile) Elastomer with Metal–Ligand Coordination Complexes

Kee, Jinho; Ahn, Hyungju; Park, Hyeok; Seo, Young‐Soo; Yeo, Yong Ho; Park, Won Ho; Koo, Jaseung

doi:10.1021/acs.langmuir.1c01786

Cited by 10 publications

(8 citation statements)

References 39 publications

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“…Creating homogeneous materials that combine high stiffness, ultimate strength, and toughness is desirable for any structural material. In the laboratory, strategies toward damage-tolerant polymeric networks with increased mechanical strength and toughness are based on interpenetrating double- and triple-network architecture , mechanically interlocked polymers or one single-network architecture, e.g., with metal coordination bonds, , Coulombic interactions, or hydrogen bonding. , In the former, energy is dissipated through the rupture of one or more sacrificial networks. In the latter, energy dissipation is based on reversible cross-links.…”

Section: Introductionmentioning

confidence: 99%

Heterogeneous Local Dynamics in Mussel-Inspired Elastomers

et al. 2023

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Materials with increased mechanical strength and toughness bearing mussel-inspired iron–catechol complexes and network architectures exhibit several dynamic features, e.g., high and broad glass-“transition” temperature, not explored so far. By combining differential scanning calorimetry and dielectric spectroscopy, the latter as a function of temperature and pressure, we have explored the increase in the glass temperature, T g, and the concomitant increase in the breath of T g in bioinspired networks bearing one (covalent) or two (covalent and coordination) types of cross-links. Cross-linked networks experience heterogeneous segmental dynamics that are responsible for the broad T g range observed in the thermal measurements. The two distinct dynamics reflect the relaxation of segments in the vicinity versus more distant cross-linked units. The various topologies are shown to have different fragilities and tend to form stronger glasses with increasing network topology. In addition, the ionic conductivity is influenced by the segmental dynamics and the increased T g in the networks. These features (reduced specific heat step, Δc p, at T g and “strong” dynamic behavior) are also found in permanently cross-linked polymers with dynamic network topology known as vitrimers. The similarities in the two network systems are discussed.

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Section: Introductionmentioning

confidence: 99%

Heterogeneous Local Dynamics in Mussel-Inspired Elastomers

et al. 2023

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“…Physical or covalent interactions at the molecular level have been found to be involved in self-healing of polymers. Usually, physical interactions occur by developing van der Waals forces [44], and chemical interactions mainly comprise covalent interactions [45]. In addition, micro or nanocapsules have been used to initiate the self-recovery process in polymers [46,47].…”

Section: Self-healing Polymermentioning

confidence: 99%

Self-Healing Nanocomposites—Advancements and Aerospace Applications

et al. 2023

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Self-healing polymers and nanocomposites form an important class of responsive materials. These materials have the capability to reversibly heal their damage. For aerospace applications, thermosets and thermoplastic polymers have been reinforced with nanocarbon nanoparticles for self-healing of structural damage. This review comprehends the use of self-healing nanocomposites in the aerospace sector. The self-healing behavior of the nanocomposites depends on factors such as microphase separation, matrix–nanofiller interactions and inter-diffusion of polymer–nanofiller. Moreover, self-healing can be achieved through healing agents such as nanocapsules and nanocarbon nanoparticles. The mechanism of self-healing has been found to operate via physical or chemical interactions. Self-healing nanocomposites have been used to design structural components, panels, laminates, membranes, coatings, etc., to recover the damage to space materials. Future research must emphasize the design of new high-performance self-healing polymeric nanocomposites for aerospace structures.

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“…Coordination complexes, one type of noncovalent interaction, have attracted tremendous interest in molecular structure manipulations by tuning the network from weak to dynamic interactions. [1][2][3][4][5][6] On account of their unique features from metal-ligand interactions, coordination complexes can function as sacrificial bonds to dissipate external energy, thus endowing polymers with remarkable mechanical properties, including excellent toughness, [7,8] high stretchability, [4,9] and rapid self-healing, [10][11][12] etc. Such material properties have enabled the metal-coordinated polymers for a wide range of appli-etc.…”

Section: Introductionmentioning

confidence: 99%

Strong, Compressible, and Ultrafast Self‐Recovery Organogel with In Situ Electrical Conductivity Improvement

Zhang

Guo

et al. 2023

Adv Funct Materials

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Coordination complexes are widely used to tune the mechanical behaviors of polymer materials, including tensile strength, stretchability, self‐healing, and toughness. However, integrating multivalent functions into one material system via solely coordination complexes is challenging, even using combinations of metal ions and polymer ligands. Herein, a single‐step process is described using silver‐based coordination complexes as cross‐linkers to enable high compressibility (>85%). The resultant organogel displays a high compressive strength (>1 MPa) with a low energy loss coefficient (<0.1 at 50% strain). Remarkably, it demonstrates an instant self‐recovery at room temperature with a speed >1200 mm s−1, potentially being utilized for designing high‐frequency‐responsive soft materials (>100 Hz). Importantly, in situ silver nanoparticles are formed, effectively endowing the organogel with high conductivity (550 S cm−1). Given the synthetic simplification to achieve multi‐valued properties in a single material system using metal‐based coordination complexes, such organogels hold significant potential for wearable electronics, tissue‐device interfaces, and soft robot applications.

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Stretchable and Self-Healable Poly(styrene-co-acrylonitrile) Elastomer with Metal–Ligand Coordination Complexes

Cited by 10 publications

References 39 publications

Heterogeneous Local Dynamics in Mussel-Inspired Elastomers

Heterogeneous Local Dynamics in Mussel-Inspired Elastomers

Self-Healing Nanocomposites—Advancements and Aerospace Applications

Strong, Compressible, and Ultrafast Self‐Recovery Organogel with In Situ Electrical Conductivity Improvement

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