Polyethylene glycol infused acid-etched halloysite nanotubes for melt-spun polyamide-based composite phase change fibers

Xiang, Hengxue; Zhou, Jialiang; Zhang, Yangkai; Innocent, Mugaanire Tendo; Zhu, Meifang

doi:10.1016/j.clay.2019.105249

Cited by 36 publications

(23 citation statements)

References 55 publications

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“…Many studies have demonstrated that acid etching can roughly double the internal diameter of the halloysite lumen, from the typical 15 nm for pristine tubes to 25-30 nm in processed versions. 59,61,102,104,105 The corresponding geometrical calculations indicate that the volume of the clay lumen may increase 3-4 times, which had been confirmed experimentally with loading of certain chemicals (e.g., corrosion inhibitor benzotriazole and 2-mercaptobenzothiazole, fungicide iodopropynyl butylcarbamate). 59,104,106 In order to promote the loading of hydrophobic chemicals into the halloysite lumen, a feasible strategy is to hydrophobically pre-modify the lumen with organic molecules with alkyl chains (Fig.…”

Section: Modified Halloysite To Optimize Loadingmentioning

confidence: 71%

Manipulation of the halloysite clay nanotube lumen for environmental remediation: a review

Jiang

Dai

et al. 2022

Environ. Sci.: Nano

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Section: Modified Halloysite To Optimize Loadingmentioning

confidence: 71%

Manipulation of the halloysite clay nanotube lumen for environmental remediation: a review

Jiang

Dai

et al. 2022

Environ. Sci.: Nano

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“…24 The hysteresis loops of the two samples were similar to those of the H 3 type, which could be due to capillary condensation in the mesopores. 25 The adsorption capacity of D h . for N 2 increased significantly when compared to that of diatomite.…”

Section: Resultsmentioning

confidence: 99%

Particle type composite phase change materials via microemulsion impregnation for photothermal conversion and temperature regulation of surface coatings

Shang

Zhang

Weng

et al. 2022

Journal of Industrial Textiles

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In order to facilitate the combination of composite phase change materials (CPCMs) and fabrics, granular CPCMs were prepared, a simple vacuum impregnation method was used to adsorb n-octadecane with disc-shaped diatomite as a carrier. To improve the adsorption capacity of n-octadecane on diatomite, the average pore size of its single point was increased from 13.35 nm to 25.54 nm through acidification. The microemulsion of n-octadecane liquid with particle size of less than 200 nm was immersed into the diatomite under vacuum conditions, and after demulsification, the particle type CPCMs with a particle size of about 30 μm was prepared. The stability, thermal properties of particle type CPCM, and its thermoregulation on textile were systematically studied. The particle type CPCM with the latent heat energy of 34.69 J/g revealed no phase leakage when heated for 30 min at 50°C. The impregnation rate of acidified diatomite was increased by 51.7% compared with original diatomite. The CPCMs mixed with polyurethane was coated on the surface of cotton fabric and evaluated the thermal properties of the fabric. The fabric was allowed to absorb heat at 40°C to reach saturation. Analysis showed that the heat storage performance of the fabric was increased by 7.9%, and the temperature difference was adjusted to 2.9–3.1°C, which effectively slowed down thermoregulatory in a relatively low temperature environment. Moreover, the coated particle type CPCM did not alter the coldness of the cotton fabric.

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“…Conversely, the LHS capacity and melting temperature were gradually decreased along with the loaded PEG fraction. Xiang et al proposed to improve the loading of PEG into HNT by selective acid etching [124]. The inner alumina surface of HNT can be partially dissolved by selective acid etching to improve the specific surface area and pore volume while the outer silica surface remains intact.…”

Section: Halloysite-based Pcm Compositesmentioning

confidence: 99%

Clay Composites for Thermal Energy Storage: A Review

et al. 2020

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The development of novel materials and approaches for effective energy consumption and the employment of renewable energy sources is one of the current trends in modern material science. With this respect, the number of researches is focused on the effective harvesting and storage of solar energy for various applications. Phase change materials (PCMs) are known to be able to store thermal energy of the sunlight due to adsorption and release of latent heat through reversible phase transitions. Therefore, PCMs are promising as functional additives to construction materials and paints for advanced thermoregulation in building and industry. However, bare PCMs have limited practical applications. Organic PCMs like paraffins suffer from material leakage when undergoing in a liquid state while inorganic ones like salt hydrates lack long-term stability after multiple phase transitions. To avoid this, the loading of PCMs in porous matrices are intensively studied along with the thermal properties of the resulted composites. The loading of PCMs in microcontainers of natural porous or layered clay materials appears as a simple and cost-effective method of encapsulation significantly improving the shape and cyclic stability of PCMs. Additionally, the inclusion of functional clay containers into construction materials allows for improving their mechanical and flame-retardant properties. This article summarizes the recent progress in the preparation of composites based on PCM-loaded clay microcontainers along with their future perspectives as functional additives in thermo-regulating materials.

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Polyethylene glycol infused acid-etched halloysite nanotubes for melt-spun polyamide-based composite phase change fibers

Cited by 36 publications

References 55 publications

Manipulation of the halloysite clay nanotube lumen for environmental remediation: a review

Manipulation of the halloysite clay nanotube lumen for environmental remediation: a review

Particle type composite phase change materials via microemulsion impregnation for photothermal conversion and temperature regulation of surface coatings

Clay Composites for Thermal Energy Storage: A Review

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