Electrospinning fabricated novel poly (ethylene glycol)/graphene oxide composite phase-change nano-fibers with good shape stability for thermal regulation

Ji, Rong; Zhou, Fuxi; Xu, Fen; Wang, Xiaodong; Huang, Chao‐Wei; Zhu, Yucao; Zhang, Huanzhi; Sun, Lin; Lin, Xiangcheng; Peng, Hongliang; Zou, Yongjin; Chu, Hailiang

doi:10.1016/j.est.2021.102687

Cited by 41 publications

(17 citation statements)

References 43 publications

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“…Other studies also showed this enhancement in thermal stability after incorporation of GO into the polymeric fibers possibly due to uniform dispersion, strong interfacial interactions, and reinforcement effect of GO in agreement with the XRD results. [41][42][43][44][45] Finally, the small peak around 230 C in the nanocomposite can be also attributed to thermal decomposition of GO functional groups (i.e., hydroxyl, carboxyl, and epoxides) as reported previously. 45,46…”

Section: Dscsupporting

confidence: 73%

Electrospinning of smart fibrous nanocomposite based on graphene/polydiacetylene

Afsari

Eslahi

Varsei

et al. 2023

J of Applied Polymer Sci

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This study aims to produce smart nanocomposite fibers using the electrospinning method for potential sensing applications. For this purpose, polyvinylpyrrolidone (PVP) and polydiacetylene (PDA) solutions at two different ratios are prepared and electrospun at the voltage of 15 kV, distance to the collector of 15 cm, and the flow rate of 1 mL/h. To enhance the mechanical properties and sensitivity of the fibers, graphene oxide (GO) is then added to the polymer solution at different percentages of 0.5 to 2 wt%, and electrospinning is performed under the optimized conditions. Based on SEM analysis, with increasing the percentage of GO, the average fiber diameter decreases from 180 nm (without graphene) to 150 nm (1.5 wt% GO) due to the higher conductivity of the polymer solution after incorporation of GO. FTIR spectra reveal the possible hydrogen bonding between the components. In order to investigate the colorimetric behavior of the electrospun nanofibers, they are subjected to various temperatures and pHs, and a color change from bluish‐purple to reddish‐pink is observed due to conformational changes in PDA macromolecules. Finally, DSC results confirm the higher thermal stability of the nanocomposite fibers containing GO. Therefore, the fabricated thermochromic nanofibers are potentially appropriate candidates as sensors.

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Section: Dscsupporting

confidence: 73%

Electrospinning of smart fibrous nanocomposite based on graphene/polydiacetylene

Afsari

Eslahi

Varsei

et al. 2023

J of Applied Polymer Sci

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“…The addition of 15% of the nanoparticles in the PCM produces nearly 33% improvement in its thermal conductivity B Prabhu et al [13] carried out research on paraffin wax with TiO 2 -Ag nanocomposite and Sodium Lauryl Sulphate as surfactant, In comparison to paraffin wax, the accumulation of nanocomposite particles and surfactants improve the thermal conductivity, reduced melting and freezing temperatures, and increased melting and freezing latent heat capacity values. Rong Ji et al [14] poly (ethylene glycol) is used as phase change material with graphene oxide as a nanoparticle, The composite PCF's with 0.5wt% of the nanoparticle can reach up to 0.5668 W/(mk) Increases significantly and get latent heat of 103.6 J g-1 and 101.1 Jg-1 respectively. From the literature it was found that the addition of 7.5% and 10% nanocomposite to the phase change material shows better results than other combinations, so nanocomposites with 7.5 and 10% were selected [7].…”

Section: Introductionmentioning

confidence: 99%

Thermal stability and behaviour of paraffin nano Al₂O₃, graphene and surfactant sodium oleate composite as phase change material

Prabhu

Selvakumar

Heric

2022

Mater. Res. Express

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Organic phase change materials like paraffin possess high latent heat yet incredibly low thermal conductivity. For improving the thermal conductivity, nanomaterials are introduced into the phase change materials. Thermal energy storage applications benefit from the use of phase transition materials with high thermal conductivity and latent heat of fusion.. In this work to increase the dispersion of the alumina and graphene nanoparticles, a naval nanocomposite phase change material was produced utilizing sodium oleate as a surfactant. The surfactant sodium oleate is prepared with oleic acid and methanol, The mixture is prepared using sodium oleate, Alumina Nanoparticle, and Graphene in the mass ratio of 1:3:0.5 is mixed with paraffin in the weight percentage of 7.5 and 10, and thermal stability study was carried out. Alumina nanoparticles were synthesized and prepared by using a microwave-assisted chemical precipitation approach which is more effective and graphene nanoparticles were prepared by using modified hummer's method. Thermocycling was used for up to 100 cycles to determine the melting point, latent heat, and long-term thermal stability of nanocomposites with phase change material. Differential Scanning Calorimetry (DSC) was used to evaluate the heat storage behaviour of the samples, and the heating rate of nanocomposites containing PCMs was investigated. The transient hot wire method was then utilised to assess the PCMs' actual thermal conductivity. From the obtained results, nanocomposite with 7.5 wt. % additives show maximum thermal stability and latent heat (161.09 KJ/Kg) for 100 cycles with an increase in 42% effective thermal conductivity, Nanocomposite 10 wt. % shows 57 % higher thermal conductivity. But shows lower thermal stability and very low latent heat (120.44 KJ/Kg). It is understood from the results that nanoparticle and surfactant addition gives a positive rise in latent heat.

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“…For GO, a strong peak at 6.8° is ascribed to the characteristic peak of GO, 35 and a very tiny peak at 26° belongs to the characteristic peak of graphite. 36,37 In the curve of the composite material PDPP–GO, a strong and sharp peak can be observed at 10.8° of GO, illustrating the lamellar spacing of GO decreases. Meanwhile, the curve of PDPP–GO shows a new peak at 21.7°, which reveals that a few GO have been reduced to reduced graphene oxide (rGO).…”

Section: Resultsmentioning

confidence: 99%

Sensitive detection of 4-nitrophenol based on pyridine diketopyrrolopyrrole-functionalized graphene oxide direct electrochemical sensor

et al. 2023

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Electrospinning fabricated novel poly (ethylene glycol)/graphene oxide composite phase-change nano-fibers with good shape stability for thermal regulation

Cited by 41 publications

References 43 publications

Electrospinning of smart fibrous nanocomposite based on graphene/polydiacetylene

Electrospinning of smart fibrous nanocomposite based on graphene/polydiacetylene

Thermal stability and behaviour of paraffin nano Al₂O₃, graphene and surfactant sodium oleate composite as phase change material

Sensitive detection of 4-nitrophenol based on pyridine diketopyrrolopyrrole-functionalized graphene oxide direct electrochemical sensor

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Electrospinning fabricated novel poly (ethylene glycol)/graphene oxide composite phase-change nano-fibers with good shape stability for thermal regulation

Cited by 41 publications

References 43 publications

Electrospinning of smart fibrous nanocomposite based on graphene/polydiacetylene

Electrospinning of smart fibrous nanocomposite based on graphene/polydiacetylene

Thermal stability and behaviour of paraffin nano Al2O3, graphene and surfactant sodium oleate composite as phase change material

Sensitive detection of 4-nitrophenol based on pyridine diketopyrrolopyrrole-functionalized graphene oxide direct electrochemical sensor

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Thermal stability and behaviour of paraffin nano Al₂O₃, graphene and surfactant sodium oleate composite as phase change material