Superhydrophobic Coatings from Beeswax‐in‐Water Emulsions with Latent Heat Storage Capability

Naderizadeh, Sara; Heredia‐Guerrero, José A.; Caputo, Gianvito; Grasselli, Silvia; Malchiodi, Annalisa; Athanassiou, Athanassia; Bayer, Ilker S.

doi:10.1002/admi.201801782

Cited by 43 publications

(26 citation statements)

References 52 publications

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“…It is also important to understand and monitor the dispersion dynamics of the particles in the PCM during the heating-cooling cycles, newly developed technologies such as in situ liquid phase TEM analysis can be highly suitable for these materials systems [27]. In summary, these flexible (see Figure S3 and the video file; Supplementary Information), thermally conductive and stable PCM composites produced by solvent-free processes with easy scale-up potential can be very useful for different energy management systems ranging from modern electronic devices to energy savings in buildings [62,63].…”

Section: Thermal Properties Of the Monolithsmentioning

confidence: 99%

Polyimide foam composites with nano-boron nitride (BN) and silicon carbide (SiC) for latent heat storage

Clausi

Zahid

Shayganpour

et al. 2022

Adv Compos Hybrid Mater

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Leaching and instability in wax-based phase change materials (PCMs) are serious application problems. Herein, we developed paper-like (~ 100 µm) flexible, composite PCMs by hydraulic compression of 1-cm-thick polyimide foams between an aluminum foil and a (nano) ceramic composite Parafilm®. An unfilled PCM film placed between the foam and the aluminum surface ensured strong adhesion between the collapsed foam and the metal. Different concentrations of nano-BN and micro-SiC particles were compounded into Parafilm® in order to optimize the thermal performance. Based on infrared imaging, the monoliths containing 30 wt% micro-SiC outperformed all other systems including BN/SiC hybrids. The next best thermal performance was observed with the 60 wt% nano-BN composite. Due to compression, the cellular structure of the polyimide foams collapsed irreversibly while being impregnated by the PCMs from both sides. High-k fillers improved impregnation into the collapsed foam and enabled excellent shape stability and leakage prevention. Graphical abstract

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Section: Thermal Properties Of the Monolithsmentioning

confidence: 99%

Polyimide foam composites with nano-boron nitride (BN) and silicon carbide (SiC) for latent heat storage

Clausi

Zahid

Shayganpour

et al. 2022

Adv Compos Hybrid Mater

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“…At a moderate beeswax/CNFs weight ratio (5:1, Figure 1b), after the evaporation of the volatile solvent, a dense layer of CNFs was formed on the substrate with CNFs partially imbedded in the hydrophobic beeswax matrix. [8,22] Compared with PDMS or PTFE, [8] selection of beeswax as the binder is advantageous in that beeswax could naturally solidify and do not need additional post-fabrication thermal treatment, making it suitable for batch production. At a smaller beeswax/CNFs weight ratio, evaporation of the dichloromethane would lead to beeswax nanospheres (Figure 1a), which agglomerated and resulted in loosely attached CNFs on the substrate.…”

Section: Fabrication and Characterization Of The Nanofiber Hemostatic Materialsmentioning

confidence: 99%

Nonwetting Nanostructured Hemostatic Material for Bleeding Control with Minimal Adhesion

Niu

Zhao

et al. 2021

Adv Materials Inter

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clotting speed by promoting coagulation reactions. [6,7] However, the commonly used hydrophilic hemostatic materials have the following drawbacks. [7,8] First, they are not effective in bleeding control. As clotting passively depends on the coagulation process, bleeding through the hydrophilic material will not stop until the formation of a strong clot to seal the wound. Second, after clot solidification, the hydrophilic dressing soaked blood would form a composite that strongly adheres on the wound, making it difficult to remove the dressing for subsequent wound care; forced peeling would cause tear, secondary bleeding and infection. [9,10] To deal with these problems, hemostatic materials based on new strategies for clot formation have been developed. [6,7,[11][12][13][14][15] Inspired by the fibrin meshwork generated during clot formation, modified chitosan with hydrophobic functional groups was developed; the hydrophobic groups can insert to the membrane of red blood cells, forming a cell-spanning network to seal the wound; [13] but the network may be disturbed by running blood, resulting in blood loss. Under a similar framework, thin layers of peptide were coated on normal hemostatic materials; upon contact with blood, peptides could self-assemble and form nanofiber structures, trapping red blood cells and generating a clot independent of body's coagulation mechanism, which would be beneficial for people with coagulation disorders. [14] Adhesive hydrogel with strong adhesion on wet tissue was also developed for hemostatic applications. [16] Biomacromolecule hydrogel mimicking the extracellular matrix could crosslink under UV irradiation to seal the wound; [15] dry tissue adhesive could absorb water and form physical and covalent cross-links with the wet tissue to seal the bleeding wound. [17] However, the peptide material or the adhesive hydrogel would have strong adhesion and prevent gauze removal for subsequent wound treatment.To address these limitations, surface hydrophobicity and detachable hydrogel was leveraged to enhance the hemostatic performance and to reduce wound adhesion. [7,8,18] A hydrophobic coating prepared on the external surface of cotton dressing could function as a permeation barrier to prevent blood seepage and reduce blood loss. [7] Detachable tissue adhesive was also developed for bleeding control; [19] the bioadhesive applied on a bleeding wound could be removed by cleaving the physical and chemical cross-links at the

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“…The most effective and inexpensive method to prepare coatings containing these properties is the application of polymer materials fabricated with various monomers, such as acrylic, fluorinated, and silicon-based materials [86,87]. Building a hydrophobic surface is a useful method for waterproof coatings [88][89][90]. Low surface energy and microor nanostructure of the surface are the key to the hydrophobic surface [91][92][93].…”

Section: Waterproof Coatingsmentioning

confidence: 99%

Recent Progress in Polymer-Based Building Materials

Shen

Jiang

Lin

et al. 2020

International Journal of Polymer Science

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With the development of human society, the requirements for building materials are becoming higher. The development of polymer materials and their application in the field of architecture have greatly enhanced and broadened the functions of building materials. With the development of material science and technology, many functional materials have been developed. Polymer materials have many excellent properties compared with inorganic materials, and they can also be improved to enhance functional properties by blending or adding various additives (such as flame retardants, antistatic agents, and antioxidants). In this paper, polymer-based building materials are introduced with three classes according to the applications, that is, substrates, coatings, and binders, and their recent signs of progress in the preparations and applications are carefully demonstrated.

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Superhydrophobic Coatings from Beeswax‐in‐Water Emulsions with Latent Heat Storage Capability

Cited by 43 publications

References 52 publications

Polyimide foam composites with nano-boron nitride (BN) and silicon carbide (SiC) for latent heat storage

Polyimide foam composites with nano-boron nitride (BN) and silicon carbide (SiC) for latent heat storage

Nonwetting Nanostructured Hemostatic Material for Bleeding Control with Minimal Adhesion

Recent Progress in Polymer-Based Building Materials

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