Synthesis and properties of microencapsulated octadecane with silica shell as shape–stabilized thermal energy storage materials

Tang, Fang; Liu, Lingkun; Alva, Guruprasad; Jia, Yuting; Fang, Guiyin

doi:10.1016/j.solmat.2016.10.014

Cited by 102 publications

(45 citation statements)

References 45 publications

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“…23 To address these inherent shortcomings in PCMs, a number of approaches have been adopted including mixing PCMs with polymers, incorporating PCMs into porous supports, or encapsulating PCMs in shells, etc. [24][25][26][27][28] Combining PCMs with support matrixes has been testied to be an effective method among these.…”

Section: -19mentioning

confidence: 99%

H₂O₂-microwave treated graphite stabilized stearic acid as a composite phase change material for thermal energy storage

Xie

Chen

et al. 2017

RSC Adv.

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Flake graphite (FG) was treated by microwave radiation in hydrogen peroxide solution and used to support stearic acid (SA) to synthesize SA/FG composites for thermal energy storage. Furthermore, the mechanism of the enhanced performance of SA/FG 3 was further revealed by monitoring functional groups of the surface of FG and demonstrated on the atomic-scale. Infrared imaging showed SA/FG 3 possessed superior thermal-regulated properties. Therefore, all these thermal properties indicate SA/FG 3 has potential for application in thermal energy storage systems.

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Section: -19mentioning

confidence: 99%

H₂O₂-microwave treated graphite stabilized stearic acid as a composite phase change material for thermal energy storage

Xie

Chen

et al. 2017

RSC Adv.

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“…As expected, the calculated encapsulation efficiency values increased when the shell/core ratio used in microencapsulation process decreased. Additionally, according to the DSC analysis results, it was concluded that produced microcapsules had extensive potential to be used for developing thermal sensor or thermal energy storage materials …”

Section: Resultsmentioning

confidence: 99%

Preparation of poly(methyl methacrylate‐co‐ethylene glycol dimethacrylate‐co‐glycidyl methacrylate) walled thermochromic microcapsules and their application to cotton fabrics

Tözüm

Alkan

Aksoy

2019

J of Applied Polymer Sci

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This study focused on fabrication of the thermochromic microcapsules and their application to the cotton fabric. In this study, thermochromic systems composed of crystal violet lactone, bisphenol A, and 1‐tetradecanol were prepared and microencapsulated by emulsion polymerization method in poly(methyl methacrylate‐co‐ethylene glycol dimethacrylate‐co‐glycidyl methacrylate) wall. The microcapsules were analyzed by Fourier transform infrared spectroscopy, scanning electron microscope, transmission electron microscope, differential scanning calorimetry, and thermogravimetric analysis. Their thermoregulating property was tested by T‐history test. The results revealed that microcapsules with smooth surfaces, core–shell structured, and spherical shape were successfully produced. The latent heat storage capacity of the microcapsules decreased from 202 J g−1 to 167 J g−1 when their shell/core ratio changed from 0.5/1 to 2/1. Microcapsules were adequately had sufficient thermal resistance to the temperatures they will encounter during their application to textile products and their usage. According to the UV–visible spectroscopy analysis and color measurements, the microcapsules exhibited reversible color change from blue to colorless and vice versa. Besides, the microcapsule impregnated fabric was able to absorb latent heat energy of 21.79 J g−1 at around 35 °C and had cooling effect. According to the colorimetric parameters, the fabric was at blue color at room temperature and became colorless when heated to the temperature above the melting point of thermochromic system. © 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2020, 137, 48815.

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“…[11][12][13] Stabilizing PCMs with supporting matrix (e.g., carbon materials, metal or their oxides, porous structure materials, nanomaterials, etc.) into form-stable composite PCMs is the most promising practical method to overcome these problems.…”

Section: -5mentioning

confidence: 99%

“…22 Fang et al successfully used silicon dioxide or silica shell to stabilize nhexadecane, 23 lauric acid, 24 and octadecane, 11 respectively, and the thermal storage capacities of the prepared composite PCMs were 100-230 J g…”

Section: 1114-21mentioning

confidence: 99%

Graphene-decorated silica stabilized stearic acid as a thermal energy storage material

Xie

Chen

2017

RSC Adv.

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Novel thermal energy storage materials were synthesized from graphene-decorated silica (SG) and stearic acid (SA) by vacuum impregnation method. Three kinds of SG (SG 1 , SG 5 , and SG 10 ) were prepared by decorating silica with different contents of graphene and were then used to stabilize SA to prepare SA/ SG 1 , SA/SG 5 , and SA/SG 10 composites. The structures and thermal energy storage performances of the SA/SG composites were investigated. It is of interest that the thermal energy storage behaviors of the SA/ SG composites were dramatically changed with different contents of graphene, presenting more than one endothermal or exothermal peak in the differential scanning calorimetry (DSC) curves while pure SA had only one. The SA in SA/SG 1 and SA/SG 5 showed higher crystallinity (F c , 84.44% and 84.39%) and greater effective energy storage per unit mass (E ef , $150 J g À1 ) than that of SA in SA/SG 10 . These thermal energy storage behaviors and properties were revealed to be related to the pore structures of the SG.The thermal stability of the SA/SG composites was analyzed by a thermogravimetric analyzer (TGA), and the SA/SG composites have good thermal stability. Addition of graphene was beneficial to the enhancement in thermal conductivity of the SA/SG composite, which could reach 0.90 W m, and 1.12 W m À1 K À1 for SA/SG 1 , SA/SG 5 , and SA/SG 10 , respectively; and were 246%, 304%, and 331% higher than pure SA, respectively. SA/SG 5 has potential for application in thermal energy storage, especially in thermal gradients due to it having both high E ef and thermal conductivity.

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Synthesis and properties of microencapsulated octadecane with silica shell as shape–stabilized thermal energy storage materials

Cited by 102 publications

References 45 publications

H₂O₂-microwave treated graphite stabilized stearic acid as a composite phase change material for thermal energy storage

H₂O₂-microwave treated graphite stabilized stearic acid as a composite phase change material for thermal energy storage

Preparation of poly(methyl methacrylate‐co‐ethylene glycol dimethacrylate‐co‐glycidyl methacrylate) walled thermochromic microcapsules and their application to cotton fabrics

Graphene-decorated silica stabilized stearic acid as a thermal energy storage material

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Synthesis and properties of microencapsulated octadecane with silica shell as shape–stabilized thermal energy storage materials

Cited by 102 publications

References 45 publications

H2O2-microwave treated graphite stabilized stearic acid as a composite phase change material for thermal energy storage

H2O2-microwave treated graphite stabilized stearic acid as a composite phase change material for thermal energy storage

Preparation of poly(methyl methacrylate‐co‐ethylene glycol dimethacrylate‐co‐glycidyl methacrylate) walled thermochromic microcapsules and their application to cotton fabrics

Graphene-decorated silica stabilized stearic acid as a thermal energy storage material

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H₂O₂-microwave treated graphite stabilized stearic acid as a composite phase change material for thermal energy storage

H₂O₂-microwave treated graphite stabilized stearic acid as a composite phase change material for thermal energy storage