NIR-induced self-healing and recyclable polyurethane composites based on thermally reversible cross-linking for efficient solar-to-thermal energy storage

Li, Xiaohua; Wang, Haibo; Yuan, Shunpan; Song, Lin; Deng, Sha; Du, Zongliang; Cheng, Xu; Du, Xiaosheng

doi:10.1016/j.polymer.2022.124885

Cited by 17 publications

(5 citation statements)

References 42 publications

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“…An interesting example is that of Bouteiller et al, who tentatively addressed these limitations by chemically modifying a commercial (relatively strong and tough) thermoplastic polyurethane (TPU) in order to enable its self-healing without major loss of mechanical properties. 11 Apart from increasing the complexity of chemical architectures, materials healing can be envisaged through the application of various physical stimuli including, but not limited to, convective heat, microwaves, 12,13 laser radiations, 14,15 and magnetic oscillatory fields. 16−20 In the latter case, stimulus healing is achieved by irradiating micro-or nanoparticles (NPs) embedded into a thermoplastic polymer matrix with an oscillatory magnetic field (OMF) of several hundreds of kilohertz and 5−50 mT, generating heat through magnetic hysteresis loss.…”

Section: ■ Introductionmentioning

confidence: 99%

“…Apart from increasing the complexity of chemical architectures, materials healing can be envisaged through the application of various physical stimuli including, but not limited to, convective heat, microwaves, , laser radiations, , and magnetic oscillatory fields. − In the latter case, stimulus healing is achieved by irradiating micro- or nanoparticles (NPs) embedded into a thermoplastic polymer matrix with an oscillatory magnetic field (OMF) of several hundreds of kilohertz and 5–50 mT, generating heat through magnetic hysteresis loss. The physical mechanism at the origin of this loss depends on the particles’ size, shape, and nature .…”

Section: Introductionmentioning

confidence: 99%

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Smoothing and Cicatrization of Isotactic Polypropylene/Fe₃O₄ Nanocomposites via Magnetic Hyperthermia

Griffiths,

Fritz,

et al. 2024

ACS Appl. Polym. Mater.

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We prepare industrially relevant magnetoresponsive thermoplastic nanocomposites capable of being cicatrized and smoothed after additive manufacturing through the application of an oscillatory magnetic field (OMF). The materials are made of an isotactic polypropylene (iPP) matrix filled with magnetite nanoparticles (NPs; 2−22 wt %, 75 nm in diameter) synthesized from steel waste, providing them with a limited ecological impact on top of their ability to be repaired. NPs are found to have no significant impact on the thermal properties of iPP, which allows one to compare directly the magnetothermal effects measured on the different nanocomposites. Beyond the primary temperature increase generated by magnetic hysteresis loss, we show that the OMF irradiation triggers a second heating mechanism from the iPP melting. This phenomenon, which was assigned to NP magnetization and subsequent rotation causing high-frequency mechanical friction, is investigated here in a systematic way. Our results indicate that while the specific power generated by NP friction is (expectedly) proportional to the irradiation time, it is independent of the NP content as long as the temperature is well above the polymer melting point. These observations therefore suggest that the (local) filler−polymer interfacial rheology dictates the amount of heat generated through friction. From an application point of view, 7 wt % of the NPs is found to be enough to induce iPP melting from the magnetothermal effect, which enables the postprocessing of a hot-pressed and 3D-printed specimen through "cicatrization" and "smoothing" experiments. In the former case, rewelding a sample cut into two pieces is found to provide a Young modulus and a yield point similar to those in native hot-pressed samples (exhibiting, however, a lower strain at failure). In the latter case and beyond the improved specimen appearance, smoothing is found to double both the stress and strain at failure of large 3Dprinted samples that present, nevertheless, significantly lower properties than those of their hot-pressed counterparts.

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Section: ■ Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Smoothing and Cicatrization of Isotactic Polypropylene/Fe₃O₄ Nanocomposites via Magnetic Hyperthermia

Griffiths,

Fritz,

et al. 2024

ACS Appl. Polym. Mater.

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“…In fact, development of stimulus response dynamic networks has already improved novel phase change materials with excellent recyclable performance. , For example, Lei and coworkers have reported a series of PCMs with a dynamic crosslinked structure, including dynamic Diels–Alder (DA) bonds, disulfide covalent bonds, metal–ligand coordination, and oxime carbamate bonds . Wang et al ,, adopted furan/maleimide Diels–Alder (DA) and hydrogen bonds as reversible units to synthesize SSPCM composites. Cai et al , reported dynamic crosslinked urethane bonds and oxime-urethane bonds to produce the SSPCMs.…”

Section: Introductionmentioning

confidence: 99%

Synthesis and Properties of Dynamic Crosslinking Polyurethane/PEG Shape-Stable Phase Change Materials Based on the Diels–Alder Reaction

Lin

Ying

et al. 2023

ACS Appl. Polym. Mater.

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Phase change materials (PCMs) can absorb and release energy while keeping the temperature constant; hence, they play a crucial role in the thermal management field. Shape-stable phase change materials (SSPCMs) were synthesized by chemical crosslinking to address the liquid leakage problem of solid−liquid phase change materials (SLPCMs) during the phase change process. However, the abandoned SSPCMs cannot be reused and recycled, which seriously restricts their practical application. Herein, a polyurethane network containing Diels−Alder bonds was used as the enclosure compound to obtain the encapsulation of polyethylene glycol (PEG), and then, the chemical structure, crystallization behavior, and phase transition ability of SSPCMs were systematically investigated. The results showed that the SSPCMs-3 sample (300 wt % PEG) had the best comprehensive performance, an enthalpy value of 171.7 J/g, and no leakage at 80 °C for 1 h. Moreover, the structure, crystallization behavior, and phase transition ability of SSPCMs could also basically remain unchanged after multiple thermal cycling and reprocessing.

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“…Polyethylene glycol (PEG) is polyols that have a high molecular weight [4], non-toxic [5], have a primary hydroxyl group, and provides flexibility [6]. In this study, PEG-400 was used because it has a liquid form so that it is easy to apply to the polyurethane foam formula.…”

Section: Introductionmentioning

confidence: 99%

Improvement of Flexible Polyurethane Foam Characteristics of Palm Oil Polyols with the Addition Of Polyethylene Glycol-400

Neswati,

Nazir,

Arief

et al. 2023

IOP Conf. Ser.: Earth Environ. Sci.

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Palm oil polyol-based foams have inflexible and brittle properties. Palm oil polyols have a lower molecular weight. Polyols with a high molecular weight and a primary OH group, such as polyethylene glycol (PEG)-400, can provide the flexible properties of polyurethane foam. This study aimed to examine the optimum concentration of PEG-400, which can produce flexible polyurethane foam made from palm oil polyols with the best characteristics based on mechanical properties. This study compared palm oil polyol and PEG-400 treatment of 80%:20%, 70%:30%, 60%:40%, 50%:50%. Flexible polyurethane foam was characterized, including FTIR analysis, SEM, tensile strength, yield strength, elongation at break, and TGA. The results showed that the use of PEG-400 at an optimum concentration of 40% resulted in flexible polyurethane foam with a greater number of open cells and increased flexible properties but decreased the value of tensile strength and yield strength, as well as decreased the foam’s stability to heat. However, tensile strength and elongation at break of PEG-based palm oil polyurethane obtained from this study followed the flexible polyurethane foam requirements.

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NIR-induced self-healing and recyclable polyurethane composites based on thermally reversible cross-linking for efficient solar-to-thermal energy storage

Cited by 17 publications

References 42 publications

Smoothing and Cicatrization of Isotactic Polypropylene/Fe₃O₄ Nanocomposites via Magnetic Hyperthermia

Smoothing and Cicatrization of Isotactic Polypropylene/Fe₃O₄ Nanocomposites via Magnetic Hyperthermia

Synthesis and Properties of Dynamic Crosslinking Polyurethane/PEG Shape-Stable Phase Change Materials Based on the Diels–Alder Reaction

Improvement of Flexible Polyurethane Foam Characteristics of Palm Oil Polyols with the Addition Of Polyethylene Glycol-400

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NIR-induced self-healing and recyclable polyurethane composites based on thermally reversible cross-linking for efficient solar-to-thermal energy storage

Cited by 17 publications

References 42 publications

Smoothing and Cicatrization of Isotactic Polypropylene/Fe3O4 Nanocomposites via Magnetic Hyperthermia

Smoothing and Cicatrization of Isotactic Polypropylene/Fe3O4 Nanocomposites via Magnetic Hyperthermia

Synthesis and Properties of Dynamic Crosslinking Polyurethane/PEG Shape-Stable Phase Change Materials Based on the Diels–Alder Reaction

Improvement of Flexible Polyurethane Foam Characteristics of Palm Oil Polyols with the Addition Of Polyethylene Glycol-400

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Smoothing and Cicatrization of Isotactic Polypropylene/Fe₃O₄ Nanocomposites via Magnetic Hyperthermia

Smoothing and Cicatrization of Isotactic Polypropylene/Fe₃O₄ Nanocomposites via Magnetic Hyperthermia