Facile synthesis of shape-stable phase-change composites <i>via</i> the adsorption of stearic acid onto cellulose microfibers

Voronin, Denis V.; Mendgaziev, Rais I.; Рубцова, М.Ю.; Cherednichenko, Kirill A.; Demina, Polina A.; Vostrikova, Anna M.; Shchukin, Dmitry G.; Винокуров, В. А.

doi:10.1039/d1qm01631h

Cited by 14 publications

(16 citation statements)

References 78 publications

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“…The calculated thermal storage capability of PEG6000/CS6 was 98.37%, whereas that of PGO-CTAB/CS6 PCMs was higher than 99.00%. The high crystallinity of PEG suggests that the addition of GO-CTAB helped to eliminate the confinement effects when PEG6000 was loaded on biochars in restricted volume, and PEG6000 adsorbed on the biochar surface and micropores is free to undergo reversible phase transitions [ 32 ]. Meanwhile, the crystallinity of PEG in GO-PEG PCMs are of 98.31–98.96%, which are lower than that in GO-PEG/biochar PCMs (all above 99%), indicating the induction of crystallization of biochar towards PEG6000.…”

Section: Resultsmentioning

confidence: 99%

Effect of GO on the Structure and Properties of PEG/Biochar Phase Change Composites

et al. 2023

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In recent years, phase change materials (PCMs) have been widely used in waste heat utilization, buildings, and solar and wind energy, but with a huge limitation from the low thermal conductivity, photothermal conversion efficiency, and low latent heat. Organic PCMs are eyecatching because of its high latent heat storage capability and reliability, but they still suffer from a lack of photothermal conversion and sharp stability. Here, we prepared sharp-stable PCMs by establishing a carbon material frame system consisting of graphene oxide (GO) and biochar. In particular, surfactants (CTAB, KH-560 and KH-570) were employed to improve the dispersity of GO in PEG. The differential scanning calorimetry results shows that the latent heat of PEG modified by CTAB grafted GO (PGO-CTAB) was the highest (191.36 J/g) and increased by 18.31% compared to that of pure PEG (161.74 J/g). After encapsulation of PGO-CTAB in biochar, the obtained composite PCM with the amount of biochar and PGO-CTAB in weight ratio 4:6 (PGO-CTAB/CS6(6)) possesses relatively high latent heat 106.51 J/g with good leak resistance and thermal stability, and with obviously enhanced thermal conductivity (0.337 W/(m·K)) and photothermal conversion efficiency (77.43%), which were higher than that of PEG6000 (0.325 W/(m·K), 44.63%). The enhancement mechanism of heat transfer and photothermal conversion on the composite PCM is discussed.

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Section: Resultsmentioning

confidence: 99%

Effect of GO on the Structure and Properties of PEG/Biochar Phase Change Composites

et al. 2023

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“…PCMs can be classified into three main categories based on their chemical nature: organic (o-PCMs), inorganic (io-PCMs) and a combination of both called eutectic (eu-PCMs). 76,[153][154][155][156][157][158][159] PCMs can also be categorised based on their operating temperature range, latent heat of fusion and energy storage mode. An ideal PCM should have all the necessary characteristics for effective thermal energy storage, but often, a combination of materials is used to achieve the desired properties.…”

Section: Pcm Composites For Controlled Heat Storagementioning

confidence: 99%

Layered nanomaterials for renewable energy generation and storage

Nikitina,

Lavrentev,

Yurova

et al. 2024

Mater. Adv.

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“…Introducing carbon-based fillers for strengthening in 𝜆 of PI films is the most common method. [104,105] Kim et al [106] used unmodified CB as filler, the 𝜆 of PI film was up to 5.59 W (m K) −1 when its loading was 150 wt.%. Chao et al [107] used modified multi-walled carbon nanotubes (MWCNT) to compound with PI, the 𝜆 of PI film containing 3 wt.% modified MWCNT reached to 0.44 W (m K) −1 .…”

Section: Effect Of Filler Type On Thermally Conductive Behavior Of Pi...mentioning

confidence: 99%

“…Introducing carbon‐based fillers for strengthening in λ of PI films is the most common method. [ 104,105 ] Kim et al. [ 106 ] used unmodified CB as filler, the λ of PI film was up to 5.59 W (m K) −1 when its loading was 150 wt.%.…”

Section: High‐λ Fillers Strengthened Thermally Conductive Pi Filmmentioning

confidence: 99%

Structural Design and Research Progress of Thermally Conductive Polyimide Film – A Review

Tao

Sun

Chen

et al. 2023

Macromol. Rapid Commun.

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Currently, heat accumulation has seriously affected the stabilities and life of electronic devices. Polyimide (PI) film with high thermal conductivity coefficient (𝝀) has long been held up as an ideal solution for heat dissipation. Based on the thermal conduction mechanisms and classical thermal conduction models, this review presents design ideas of PI films with microscopically ordered liquid crystalline structures which are of great significance for breaking the limit of 𝝀 enhancement and describes the construction principles of thermal conduction network in high-𝝀 filler strengthened PI films. Furthermore, the effects of filler type, thermal conduction paths, and interfacial thermal resistances on thermally conductive behavior of PI film are systematically reviewed. Meanwhile, this paper summarizes the reported research and provides an outlook on the future development of thermally conductive PI films. Finally, it is expected that this review will give some guidance to future studies in thermally conductive PI film.

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Facile synthesis of shape-stable phase-change composites via the adsorption of stearic acid onto cellulose microfibers

Abstract: Phase change materials (PCMs) offer an exciting way to facilitate energy consumption from renewables and develop responsive energy management by storing and releasing thermal energy as latent heat of reversible...

Cited by 14 publications

References 78 publications

Effect of GO on the Structure and Properties of PEG/Biochar Phase Change Composites

Effect of GO on the Structure and Properties of PEG/Biochar Phase Change Composites

Layered nanomaterials for renewable energy generation and storage

Structural Design and Research Progress of Thermally Conductive Polyimide Film – A Review

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