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Polyethylene glycol infused acid-etched halloysite nanotubes for melt-spun polyamide-based composite phase change fibers
https://orcid.org/0000-0003-0359-3633
Abstract The unique tubular structure and morphology of inorganic nanotubes makes them very useful supporting materials for thermal energy storage. Lending these properties in the form of composites together with traditional organic phase change materials (PCMs) can solve the existing energy storage and thermal stability problems in PCMs. Here, the acid-etching halloysite nanotubes (A-HNTs) are prepared and employed as inorganic supporting materials to encapsulate polyethylene glycol (PEG). The N2 physisorption results indicated that the specific surface area and pore volume of A-HNTs increased from 45.4m2/g, 0.243cm3/g to 253.4 m2/g and 0.621 cm3/g before and after acid etching leading to an effective PEG load increase from 50 mass% to 70 mass% of composite PCMs. This increasing encapsulation capacity of PEG had a beneficial effect on the phase change performances and the latent heat of the prepared PEG/A-HNTs composite PCMs which reached 112 J/g (as compared to 70.64 J/g of PEG/HNTs). The temperature- regulating time of heat storage and release process were >500 s and 491 s respectively. Further, the DSC thermograms with 100 thermal cycles and TGA results demonstrated that the PEG/A-HNTs composites had an excellent thermal reliability and stability for preparing phase-change fibers by high-temperature melt spinning. The thermal enthalpy, thermal regulating time and relative temperature difference of resultant PA6/PEG/A-HNTs reached 13.57 J/g, 206 s and 3.2 °C, respectively.
Graphical abstract Acid-etched halloysite nanotubes (A-HNTs)/polymer-based PCMs are designed and fabricated. The phase change enthalpy of PEG@A-HNTs composites reached up to 112 J/g (as compared to 70.64 J/g of PEG@HNTs), and the temperature-regulating time of heat storage and release process are >500 s and 491 s, respectively. The excellent heat resistance of PEG@A-HNTs makes them competent to prepare melt-spun PA6/PEG/A-HNTs phase change fibers. The thermal enthalpy, thermal regulating time and relative temperature difference of this fibes reached 13.57 J/g, 206 s and 3.2 °C, respectively Display Omitted
Highlights Acid-etched halloysite nanotubes (A-HNTs)/polymer-based PCMs and PA6/PEG@A-HNTs fibers are fabricated. The phase change enthalpy of PEG@A-HNTs PCMs reached to 112 J/g. The phase change enthalpy of melt-spun PA6/PEG@A-HNTs fibers reached to 13.6 J/g.
Polyethylene glycol infused acid-etched halloysite nanotubes for melt-spun polyamide-based composite phase change fibers
https://orcid.org/0000-0003-0359-3633
Abstract The unique tubular structure and morphology of inorganic nanotubes makes them very useful supporting materials for thermal energy storage. Lending these properties in the form of composites together with traditional organic phase change materials (PCMs) can solve the existing energy storage and thermal stability problems in PCMs. Here, the acid-etching halloysite nanotubes (A-HNTs) are prepared and employed as inorganic supporting materials to encapsulate polyethylene glycol (PEG). The N2 physisorption results indicated that the specific surface area and pore volume of A-HNTs increased from 45.4m2/g, 0.243cm3/g to 253.4 m2/g and 0.621 cm3/g before and after acid etching leading to an effective PEG load increase from 50 mass% to 70 mass% of composite PCMs. This increasing encapsulation capacity of PEG had a beneficial effect on the phase change performances and the latent heat of the prepared PEG/A-HNTs composite PCMs which reached 112 J/g (as compared to 70.64 J/g of PEG/HNTs). The temperature- regulating time of heat storage and release process were >500 s and 491 s respectively. Further, the DSC thermograms with 100 thermal cycles and TGA results demonstrated that the PEG/A-HNTs composites had an excellent thermal reliability and stability for preparing phase-change fibers by high-temperature melt spinning. The thermal enthalpy, thermal regulating time and relative temperature difference of resultant PA6/PEG/A-HNTs reached 13.57 J/g, 206 s and 3.2 °C, respectively.
Graphical abstract Acid-etched halloysite nanotubes (A-HNTs)/polymer-based PCMs are designed and fabricated. The phase change enthalpy of PEG@A-HNTs composites reached up to 112 J/g (as compared to 70.64 J/g of PEG@HNTs), and the temperature-regulating time of heat storage and release process are >500 s and 491 s, respectively. The excellent heat resistance of PEG@A-HNTs makes them competent to prepare melt-spun PA6/PEG/A-HNTs phase change fibers. The thermal enthalpy, thermal regulating time and relative temperature difference of this fibes reached 13.57 J/g, 206 s and 3.2 °C, respectively Display Omitted
Highlights Acid-etched halloysite nanotubes (A-HNTs)/polymer-based PCMs and PA6/PEG@A-HNTs fibers are fabricated. The phase change enthalpy of PEG@A-HNTs PCMs reached to 112 J/g. The phase change enthalpy of melt-spun PA6/PEG@A-HNTs fibers reached to 13.6 J/g.
Polyethylene glycol infused acid-etched halloysite nanotubes for melt-spun polyamide-based composite phase change fibers
https://orcid.org/0000-0003-0359-3633
Abstract The unique tubular structure and morphology of inorganic nanotubes makes them very useful supporting materials for thermal energy storage. Lending these properties in the form of composites together with traditional organic phase change materials (PCMs) can solve the existing energy storage and thermal stability problems in PCMs. Here, the acid-etching halloysite nanotubes (A-HNTs) are prepared and employed as inorganic supporting materials to encapsulate polyethylene glycol (PEG). The N2 physisorption results indicated that the specific surface area and pore volume of A-HNTs increased from 45.4m2/g, 0.243cm3/g to 253.4 m2/g and 0.621 cm3/g before and after acid etching leading to an effective PEG load increase from 50 mass% to 70 mass% of composite PCMs. This increasing encapsulation capacity of PEG had a beneficial effect on the phase change performances and the latent heat of the prepared PEG/A-HNTs composite PCMs which reached 112 J/g (as compared to 70.64 J/g of PEG/HNTs). The temperature- regulating time of heat storage and release process were >500 s and 491 s respectively. Further, the DSC thermograms with 100 thermal cycles and TGA results demonstrated that the PEG/A-HNTs composites had an excellent thermal reliability and stability for preparing phase-change fibers by high-temperature melt spinning. The thermal enthalpy, thermal regulating time and relative temperature difference of resultant PA6/PEG/A-HNTs reached 13.57 J/g, 206 s and 3.2 °C, respectively.
Graphical abstract Acid-etched halloysite nanotubes (A-HNTs)/polymer-based PCMs are designed and fabricated. The phase change enthalpy of PEG@A-HNTs composites reached up to 112 J/g (as compared to 70.64 J/g of PEG@HNTs), and the temperature-regulating time of heat storage and release process are >500 s and 491 s, respectively. The excellent heat resistance of PEG@A-HNTs makes them competent to prepare melt-spun PA6/PEG/A-HNTs phase change fibers. The thermal enthalpy, thermal regulating time and relative temperature difference of this fibes reached 13.57 J/g, 206 s and 3.2 °C, respectively Display Omitted
Highlights Acid-etched halloysite nanotubes (A-HNTs)/polymer-based PCMs and PA6/PEG@A-HNTs fibers are fabricated. The phase change enthalpy of PEG@A-HNTs PCMs reached to 112 J/g. The phase change enthalpy of melt-spun PA6/PEG@A-HNTs fibers reached to 13.6 J/g.
Polyethylene glycol infused acid-etched halloysite nanotubes for melt-spun polyamide-based composite phase change fibers
Xiang, Hengxue (author) / Zhou, Jialiang (author) / Zhang, Yangkai (author) / Innocent, Mugaanire Tendo (author) / Zhu, Meifang (author)
Applied Clay Science ; 182
2019-07-30
Article (Journal)
Electronic Resource
English
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