Temperature–humidity dual regulation of a single-core–double-shell microcapsule fabricated by electrostatic-assembly and chemical precipitation

Hou, Xianhua; Li, Qianqian; Yang, Zehui; Zhang, Yuqi; Zhang, Wenbo; Wang, Ji‐Jiang

doi:10.1039/d0ra03554h

Cited by 11 publications

(3 citation statements)

References 40 publications

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“…The bionic LIHEZ e-skin, composed of tanned sheep leather with excellent moisture and heat resistance, along with an embedded polymer network rich in hydrophilic groups (e.g., −NH 2 , −OH, −COOH, etc. ), exhibited remarkable temperature and humidity responsiveness, making it suitable for temperature and humidity sensing applications . The comparative analysis presented in Figure a,b demonstrated that the LIHEZ e-skin displayed distinct temperature perception responses when applied to a robotic hand versus a human hand due to variations in body temperature.…”

Section: Resultsmentioning

confidence: 98%

“…These ature and humidity responsiveness, making it suitable for temperature and humidity sensing applications. 48 The comparative analysis presented in Figure 6a,b demonstrated that the LIHEZ e-skin displayed distinct temperature perception responses when applied to a robotic hand versus a human hand due to variations in body temperature. Infrared imaging results confirmed that the LIHEZ e-skin could effectively sense and adapt to body surface temperatures when adhered to the human skin.…”

Section: Motion-sensing Property Of Lihez E-skinmentioning

confidence: 97%

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Multifunctional Biomimetic e-Skin Constructed In Situ on Tanned Sheep Leather as a Multimodal Sensor for the Monitoring of Motion and Health

Yang,

Wang,

Zhang

et al. 2024

Ind. Eng. Chem. Res.

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Bionic electronic skin, with its integrated biological functions, is capable of sensing and responding to external stimuli, potentially surpassing the ideal flexibility of natural skin in certain aspects. Most current preparation strategies employ the "bottomup" approach, using various monomers or polymer materials to construct artificial networks through physical or chemical crosslinking, leading to issues of complexity and limited performance. In this work, we adopted a "top-down" strategy, in which the collagen fiber network of natural aluminum-tanned sheepskin was utilized as a scaffold to load monomers itaconic acid (IA) and hydroxyethyl acrylate (HEA). The subsequent in situ polymerization of IA and HEA led to the formation of poly(itaconic acid-co-hydroxyethyl acrylate) (P(IA-HEA)) and its filling among sheepskin collagen fiber skeleton, which results in the successful fabrication of a high-strength bionic electronic skin based on natural sheepskin (LIHEZ). The advantage of this approach is that it can retain the structure and properties of natural sheepskin and give the resulting LIHEZ multiple functions (e.g., electrical conductivity, adhesion, bacteriostasis, biocompatibility, and environmental stability), thereby replicating or even surpassing the performance of natural animal skin. LIHEZ demonstrated sensitive stimulus responsiveness and durability and could serve as multimodal sensors (strain, temperature, humidity, and bioelectricity) to efficiently monitor various human movements, physiological signals, and changes in environmental temperature and humidity. This diversified data collection provides reliable assurance for monitoring human health. The present construction method using sheepskin as the substrate not only breaks the conventional strategies and single applications but also provides new insights for the selection of flexible device substrates, promising to be a next-generation ideal material for constructing intelligent bionic electronic skin.

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Section: Resultsmentioning

confidence: 98%

Section: Motion-sensing Property Of Lihez E-skinmentioning

confidence: 97%

Multifunctional Biomimetic e-Skin Constructed In Situ on Tanned Sheep Leather as a Multimodal Sensor for the Monitoring of Motion and Health

Yang,

Wang,

Zhang

et al. 2024

Ind. Eng. Chem. Res.

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“…To evaluate the performance of possible passive strategies, modeling and simulation of the exchanges between the air and these materials is necessary. Using PCMs for cooling in buildings has been widely researched [15][16][17][18] but only recently has there been some focus on materials that seek to combine the PCMs and desiccants for combined temperature-humidity regulation [19,20]. In Europe, T. Padfield [21] pioneered the study on the impact of moisture buffering in buildings.…”

Section: Introductionmentioning

confidence: 99%

Prospective PCM–Desiccant Combination with Solar-Assisted Regeneration for the Indoor Comfort Control of an Office in a Warm and Humid Climate—A Numerical Study

Manyumbu

Martin²,

Chiu³

2023

Energies

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Favorable thermal conditions within buildings are a necessity. Mechanical air conditioning, although effective, contributes a significant percentage of the world’s total energy use, which contributes to global warming. In addition, the refrigerants used in air conditioning also contribute to global warming. Passive means to provide thermal comfort have therefore been considered as alternative solutions. Phase-change materials (PCMs) have been considered as one passive cooling option. Although this option achieves a certain degree of effectiveness, especially in warm and dry climatic conditions, its effectiveness in warm humid climates is subdued due to its inability to handle humidity. In the present study, the suitability of a novel passive comfort provision strategy that combines a PCM and a desiccant is assessed. The passive system operates in a cycle of two phases: the moderating phase and the regenerating phase. For the proposed strategy, the regeneration process first involves the external desiccant bed, then night air drying using the regenerated external bed; the dried air subsequently regenerates the internal wall surface. The study involves the modeling of the proposed strategy and simulation of its performance. The simulation results indicate the significant potential for providing satisfactory comfort and health conditions through application of a combination of a desiccant and a PCM.

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The Thermal Energy Storage Characteristics of Oleic Acid Modified ZnO‐Decorated Polymer Matrix‐Supported Composite Phase Change Materials: Synthesis and Characterization

MERT,

MERT

2024

Macro Materials & Eng

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In this study, modified nano zinc oxide (ZnO)‐reinforced polymer‐supported novel thermally enhanced form‐stable composite phase change materials (PCMs) are presented, which are prepared via water in oil emulsion polymerization and following impregnation process steps. First, ZnO nanoparticles are modified with oleic acid (OA) to obtain lipophilic structures for emulsion stability, which are designed to take a role as a heat transfer activator. To ensure the shape stabilization of n‐hexadecane used as organic PCM, polymeric support materials are synthesized in the presence of modified ZnO nanoparticles (ZnO@OA). The polymeric frameworks exhibit open porous morphology, and the thermal stability of the support matrix improves with the addition of ZnO nanofiller. In the second step, composite PCMs are prepared by incorporation of n‐hexadecane with the solvent‐assisted vacuum impregnation method into polymer composites. The 1.0% ZnO@OA incorporated composite PCM has the highest incorporation ratio and exhibits a thermal storage capability (η) of 100%. According to the T‐history and thermal conductivity tests, it is observed that the heat conduction rate is enhanced with the addition of ZnO@OA nanofiller. The conclusion is that the obtained ZnO@OA integrated composite PCMs have a remarkable potential for latent heat storage applications requiring low temperature in the range of 5–25 °C.

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Temperature–humidity dual regulation of a single-core–double-shell microcapsule fabricated by electrostatic-assembly and chemical precipitation

Abstract: A single-core–double-shell microcapsule with temperature–humidity dual regulation was achieved by artfully designing of core and shell to realize the multi-functional and multi-factors regulation.

Cited by 11 publications

References 40 publications

Multifunctional Biomimetic e-Skin Constructed In Situ on Tanned Sheep Leather as a Multimodal Sensor for the Monitoring of Motion and Health

Multifunctional Biomimetic e-Skin Constructed In Situ on Tanned Sheep Leather as a Multimodal Sensor for the Monitoring of Motion and Health

Prospective PCM–Desiccant Combination with Solar-Assisted Regeneration for the Indoor Comfort Control of an Office in a Warm and Humid Climate—A Numerical Study

The Thermal Energy Storage Characteristics of Oleic Acid Modified ZnO‐Decorated Polymer Matrix‐Supported Composite Phase Change Materials: Synthesis and Characterization

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