A thermal energy storage composite by incorporating microencapsulated phase change material into wood

Wang, Wenbin; Cao, Huimin; Liu, Jingyi; Jia, Shifang; Ma, Lin; Xi, Guo; Sun, Wei

doi:10.1039/c9ra09549g

Cited by 27 publications

(23 citation statements)

References 35 publications

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“…In the FTIR spectra Fig. 3b, the COfood and COan display absorbencies at 2960 cm -1 , 2921 cm -1 , and 2854 cm -1, which indicates the sp 3 -CH stretching vibration, at 1742 cm -1 indicating the C=O stretching vibration, at 1466 cm -1 indicating the sp 3 -CH bending vibration, 1160-1109 cm -1 assigned to the acyl ester C-O vibration, and at around 720 cm -1 due to the -CH2 rocking vibration [34,35]. The Oct spectrum shows peaks at 2913 cm -1 and 2848 cm -1 corresponding to the stretching vibrations of -CH2 and -CH3 groups respectively, at 1466 cm -1 and 1369 cm -1, which belong to the bending vibrations of the -CH2 and -CH3 groups, and 716 cm -1 which indicates in-plane rocking vibration of the -CH2 group [40,41].…”

Section: Xrd and Ftir Analysismentioning

confidence: 99%

“…In buildings, such thermal storage can be realized by the incorporation of latent heat storage materials into the building structure that could store and release heat while phase changing. Materials suited to this are referred to as phase change materials (PCMs) [3][4][5]. For PCMs to be of use for thermal energy storage in buildings, the phase change must occur within the correct temperature range, usually between 22 to 28 o C [6].…”

Section: Introductionmentioning

confidence: 99%

“…One obstacle for PCM applications in buildings is the leakage of the materials while in its liquid phase. There are multiple strategies to ensure that PCMs remain stabilized in a building structure; in particular, encapsulation (microencapsulation or macroencapsulation) [3,[10][11][12] and shape stabilization [13][14][15] are two well-known methods. The encapsulation techniques are well developed [16], and now various commercial products in the form of micro or macro encapsulated PCMs are available [17].…”

Section: Introductionmentioning

confidence: 99%

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Shape-stabilized phase change materials: Performance of simple physical blending synthesis and the potential of coconut based materials

Muchtar¹,

Hassam²,

Srinivasan³

et al. 2022

Journal of Energy Storage

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Section: Xrd and Ftir Analysismentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Shape-stabilized phase change materials: Performance of simple physical blending synthesis and the potential of coconut based materials

Muchtar¹,

Hassam²,

Srinivasan³

et al. 2022

Journal of Energy Storage

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“…Wang et al. [ 227 ] prepared a DW and microPCM (solid content 53.34%) emulsion‐based composite PCM. Six different weight percentages (15%, 20%, 25%, 35%, and 40%) of microPCM emulsion were impregnated into DW via vacuum infusion and all the required properties of the PCMs were evaluated.…”

Section: Functional Materials Derived From Delignified Woodmentioning

confidence: 99%

Delignified Wood from Understanding the Hierarchically Aligned Cellulosic Structures to Creating Novel Functional Materials: A Review

Kumar

Jyske

Petrič

2021

Advanced Sustainable Systems

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performance environmentally friendly materials. This is because new processes will be required that allow control on all hierarchical levels. Wood is well defined as a biological engineering material with a complex hierarchical structure of organic material based on cellulose fibrils embedded in a matrix of hemicelluloses and lignin. [1,2] Wood has long been used as a construction material, as well as for pulp and paper production. These applications are highly dependent on the properties of lignin in wood. Removal of lignin is the key step in pulp and paper production, in addition to the conversion of biomass to liquid biofuels. Lignin was first discovered in wood by Anselme Payen in 1839, [3] as the incrusting material that must be removed to isolate the useful fibers in wood. Research pertaining to wood nanotechnology or functional wood materials is a rapidly emerging field. Functional wood materials are mostly fabricated by treating hierarchical natural templates (wood cell wall) by chemical and thermal means. These treatments selectively modify the wood cell wall structure (fine pore spaces and inner lumen surface area) for different applications. [4] The pore region and inner lumen surface have actively been modified to enhance the bulk properties of wood using organic chemicals, [5] inorganic chemicals, organic-inorganic chemicals, [6,7] and thermal methods. [8] Hybrid wood scaffolds have been prepared for diverse applications such as magnetic wood, [9,10] as well as wood-mineral and wood-metal hybrids. [11] Recent research on delignified wood (DW) has emerged from the classical pulp production method. In the preparation of DW, the embedded lignin is removed from the wood cell wall structure, while maintaining the natural hierarchical cellulosic structure. [12] Initially, DW was prepared in order to understand the unknown ultrastructure of wood cell walls. However, since 2015, research in this area has rapidly expanded to focus on the development of wood-based functional scaffolds. Within the literature, DW is predominantly prepared using alkaline delignification methods such as Kraft pulping (a mixture of sodium hydroxide (NaOH) and sodium sulfite (Na 2 SO 3 )) heated to boiling temperature), followed by bleaching using hydrogen peroxide (H 2 O 2 ) to remove the lignin. DW is chemically hydrophilic due to the presence and exposure of hydroxyl groups and possible sites for DW functionalization. DW scaffolds have been functionalized

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“…Wang et.al. [80], prepared a phase change energy storage wood (PCESW) by incorporating microPCM into balsa wood using vacuum impregnation method. Balsa wood has low density and high porosity, its porosity is further improved by delignification using a solution consisting of sodium hydroxide and sodium sulphite.…”

Section: Pcms Derived From Renewable and Sustainable Sourcesmentioning

confidence: 99%

Recent advances in phase change materials for thermal energy storage-a review

Venkateswarlu¹,

Konijeti

2021

J Braz. Soc. Mech. Sci. Eng.

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The research on phase change materials (PCMs) for thermal energy storage systems has been gaining momentum in a quest to identify better materials with low-cost, ease of availability, improved thermal and chemical stabilities and eco-friendly nature. The present article comprehensively reviews the novel PCMs and their synthesis and characterization techniques for improving the properties and long-term storage capabilities. They include eco-friendly PCMs based on wood and tree fruit oils, microPCMs, nanoconfinement of organic PCMs, metal organic PCMs, bio-based PCMs, metal organic framework (MOF) PCMs and form-stable PCMs with gelators. The novel approaches such as cryogenically treated microencapsulated PCMs and treating them with photo-switching dopants to improve the properties are also presented. This review provides the useful insights about recent advances in the field of PCMs. The phase change slurries can effectively improve the thermal performance of photovoltaic/thermal systems. The thermal conductivity of PCMs can be enhanced significantly by PCM slurries, MOFs, exfoliated graphite nanoplatelets and composite PCMs. Optical control of PCMs by doping them with azobenzene dopants is found to be the most promising technique to improve the thermal stability and long-term storage capacity of PCMs. Cyclic cryogenic treatment by liquid nitrogen followed by heat treatment of PCMs can improve the latent heat, thermal and chemical stabilities significantly. The insightful information presented in this article can serve as an important tool for the researchers in the field of PCMs research to further innovate the technology in different applications such as thermal management of buildings, solar energy storage and cryogenic storage etc.

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A thermal energy storage composite by incorporating microencapsulated phase change material into wood

Abstract: Phase change energy storage wood (PCESW) was prepared by using microencapsulated phase change materials (MicroPCM) as thermal energy storage (TES) materials and wood as the matrix.

Cited by 27 publications

References 35 publications

Shape-stabilized phase change materials: Performance of simple physical blending synthesis and the potential of coconut based materials

Shape-stabilized phase change materials: Performance of simple physical blending synthesis and the potential of coconut based materials

Delignified Wood from Understanding the Hierarchically Aligned Cellulosic Structures to Creating Novel Functional Materials: A Review

Recent advances in phase change materials for thermal energy storage-a review

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