Regulating phase-change temperatures of form-stable phase-change ternary composite fibrous membranes consisting of polystyrene nanofibers and fatty acid eutectics via co-electrospinning method

Ke, Huizhen; Wei, Qufu

doi:10.1177/0967391120910654

Cited by 4 publications

(1 citation statement)

References 24 publications

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“…Considerable scientific and industrial effort has been put into developing personal heating/cooling systems, which mainly involve the production of smart thermoregulating textiles, able to enhance human thermo-physiological comfort [ 3 , 4 ]. In such textiles, thermal regulation can be active or passive, depending on whether or not an external energy source is needed to activate the heating/cooling mechanism [ 5 ]. Active technologies with an external hot/cold source or energy supply (e.g., liquid- or air-cooling garments) can provide more reliable and accurate body temperature control.…”

Section: Introductionmentioning

confidence: 99%

Electrospun Shape-Stabilized Phase Change Materials Based on Photo-Crosslinked Polyethylene Oxide

et al. 2021

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Phase change materials (PCMs) in the form of fibers or fibrous mats with exceptional thermal energy storage ability and tunable working temperature are of high interest to produce smart thermoregulating textiles, useful for increasing human thermal comfort while avoiding energy waste. Common organic PCMs suffer from instability in their molten state, which limits their applicability as highly performing fibrous systems. In this work, electrospun fibrous mats made of polyethylene oxide (PEO), a PCM with excellent thermal properties and biocompatibility, were fabricated and their shape instability in the molten state was improved through UV photo-crosslinking. The characterization aimed to assess the performance of these shape-stable electrospun mats as nanofibrous PCMs for thermal management applications. In addition to an enhanced resistance to water-based solvents, UV-cured electrospun PEO mats demonstrated a remarkable latent heat (≈112 J/g), maintained over 80 heating/cooling cycles across the phase change temperature. Moreover, their morphological stability above their melting point was demonstrated both macroscopically and microscopically, with the retention of the initial nanofibrous morphology. Tensile mechanical tests demonstrated that the UV crosslinking considerably enhanced the ultimate properties of the fibrous mat, with a five-fold increase in both the tensile strength (from 0.15 MPa to 0.74 MPa) and the strain at break (from 2.5% to 12.2%) compared to the uncrosslinked mat. In conclusion, the photo-crosslinked electrospun PEO material exhibited high thermal properties and good shape stability without displaying leakage; accordingly, in the proposed PCM system, the necessity for encapsulation or use of a supporting layer has been eliminated. Photo-crosslinking thus proved itself as an effective, fast, and environmentally friendly method to dramatically improve the shape-stability of nanofibrous PEO electrospun mats for smart thermoregulating textiles.

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Section: Introductionmentioning

confidence: 99%

Electrospun Shape-Stabilized Phase Change Materials Based on Photo-Crosslinked Polyethylene Oxide

et al. 2021

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Preparation and characterization of structurally variable inorganic nanofibrous mats with large surface area for intelligent temperature regulation textiles

Zhang¹,

Sun²,

Wang³

et al. 2023

Colloids and Surfaces A: Physicochemical and Engineering Aspect

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Preparation and characterization of expanded dickite/decanoic acid phase-change materials

Su,

Ma,

Ding

et al. 2024

Emerging Materials Research

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The leakage of phase change materials presents a significant challenge that impedes their application. Loading porous materials onto phase change materials is an effective approach to address this issue. In this study, a porous expanded dickite as a carrier was utilized to load decanoic acid and create a composite phase change material. The loading content of decanoic acid was varied to obtain different composite phase change materials. FTIR analysis confirmed the formation of hydrogen bonds between the expanded dickite carrier and decanoic acid. SEM images and EDS mapping results demonstrated that decanoic acid was evenly dispersed on the expanded dickite carrier without any agglomeration. The expanded dickite carrier effectively immobilized the decanoic acid through hydrogen bonding, thereby preventing leakage, as long as the loading content of decanoic acid did not exceed 60%. The higher thermal conductivity of the expanded dickite carrier promoted the thermal conductivity of the expanded dickite/decanoic acid composite phase change materials, enhancing the responsiveness of the composite phase change materials to ambient temperature. The composite phase change material containing 60 wt% decanoic acid exhibited excellent endothermic/exothermic cycle stability, and after six cycles, its latent heat remained stable.

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Regulating phase-change temperatures of form-stable phase-change ternary composite fibrous membranes consisting of polystyrene nanofibers and fatty acid eutectics via co-electrospinning method

Cited by 4 publications

References 24 publications

Electrospun Shape-Stabilized Phase Change Materials Based on Photo-Crosslinked Polyethylene Oxide

Electrospun Shape-Stabilized Phase Change Materials Based on Photo-Crosslinked Polyethylene Oxide

Preparation and characterization of structurally variable inorganic nanofibrous mats with large surface area for intelligent temperature regulation textiles

Preparation and characterization of expanded dickite/decanoic acid phase-change materials

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