Study on thermophysical properties of pentadecane and its composites with thermally expanded graphite as shape-stabilized phase change materials

Nirwan, Anju; Mondal, Bobin; Kumar, R.; Dixit, Ambesh

doi:10.1007/s10973-021-11180-9

Cited by 10 publications

(5 citation statements)

References 37 publications

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“…In simpler terms, DSC measures the heat released or absorbed by a substance during its heating or cooling process. DSC has been extensively employed in characterizing and studying pharmaceuticals [27], graphite [28], and polymers [29], etc. Heat flux DSC is the most commonly used method, in which the heat of the reference and sample simultaneously flow through an electrically heated Constantine thermoelectric disk (Figure 2).…”

Section: Fundamental Principles Of Itc and Dscmentioning

confidence: 99%

Microcalorimetry Techniques for Studying Interactions at Solid–Liquid Interface: A Review

Hu,

Wu,

Zhang

2024

Surfaces

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Solid–liquid interfacial phenomena play an essential role in our everyday lives and are often regarded as the outcome of interactions at the solid–liquid interface. However, the intricately intrinsic mechanism underlying interfacial interactions renders in situ simulations and direct measurements challenging. As an effective analytic method for studying solid–liquid interfacial interactions, microcalorimetry can provide the most basic thermodynamic information (including changes in enthalpy, entropy, and Gibbs free energy during solid–liquid binding/separation processes), which is extremely crucial for understanding interaction directionality and limitation. This review is dedicated to highlighting the pivotal role of microcalorimetry in studying solid–liquid immersion and adsorption processes. Specifically, we provide an overview of the commonly employed microcalorimetric methods, including differential scanning calorimetry (DSC), isothermal titration calorimetry (ITC), and immersion microcalorimetry (IM), and delve into the influence factors of enthalpy change, and finally discuss the specific applications of microcalorimetry in studying various solid–liquid binding processes. There remains a vast expanse of thermodynamic information regarding solid–liquid interactions that await exploration via calorimetry.

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Section: Fundamental Principles Of Itc and Dscmentioning

confidence: 99%

Microcalorimetry Techniques for Studying Interactions at Solid–Liquid Interface: A Review

Hu,

Wu,

Zhang

2024

Surfaces

View full text Add to dashboard Cite

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“…In simpler terms, DSC measures the heat released or absorbed by a substance during its heating or cooling process. DSC has been extensively employed in characterizing and studying pharmaceuticals [27], graphite [28], and polymers [29] and so on. Heat flux DSC is the most commonly used method, in which the heat flows the reference and sample simultaneously through an electrically heated Constantine thermoelectric disk (Figure 2).…”

Section: Fundamental Principles Of Itc and Dscmentioning

confidence: 99%

Microcalorimetry Techniques for Studying Interactions at Solid-Liquid Interface: A Review

Hu,

Wu,

Zhang

2024

Preprint

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Solid-liquid interfacial phenomena play an essential role in our everyday lives and are often regarded as the outcome of interactions at the solid-liquid interface. However, the intricately intrinsic mechanism underlying interfacial interactions renders in-situ simulations and direct measurements challenging. As an effective analytic method for studying solid-liquid interfacial interactions, Microcalorimetry can provide the most basic thermodynamic information (including changes in enthalpy, entropy, and Gibbs free energy during solid-liquid binding/separation processes), which is extremely crucial for understanding interaction directionality and limitation. This review is dedicated to highlighting the pivotal role of microcalorimetry in studying solid-liquid immersion and adsorption processes. Specifically, we provide an overview of the commonly employed microcalorimetric methods, delve into the influence factors of enthalpy change, and finally discuss the specific applications of microcalorimetry in studying various solid-liquid binding processes. There remains a vast expanse of thermodynamic information regarding solid-liquid interactions that await exploration via calorimetry.

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“…Kumar et al have focused on integrating pentadecane in exfoliated graphite. 23 Exfoliated graphite, however, is not commercially available due to logistical challenges in its transportation. The material is very voluminous (density can be of the order of a thousandth of water) and prone to irreversible compression, interlocking, agglomeration, and deformation due to undue shocks and compressive loads faced during transportation.…”

Section: Introductionmentioning

confidence: 99%

“…This paper focuses on establishing the best way to obtain porous matrices from graphite in the form of exfoliated graphite. Kumar et al have focused on integrating pentadecane in exfoliated graphite 23 . Exfoliated graphite, however, is not commercially available due to logistical challenges in its transportation.…”

Section: Introductionmentioning

confidence: 99%

Experimental investigation of enhanced form‐stable phase change material based on stearic acid/expanded graphite/SEBS composite

Agrawal,

Arora

2024

Energy Storage

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Phase change materials (PCMs) are the materials that can absorb and release energy during their phase transition. The materials have become ubiquitous but still face challenges. The inevitable transition from solid phase to liquid phase in these materials during operation limits their utility in application areas that require leak‐proof properties like orthopaedic mattresses or gel packs, or applications requiring self‐load‐bearing capabilities (such as ceiling tiles and building walls). Entrapment of PCM in porous matrices is one of the promising methods of capturing the PCM and limiting the flow of materials in the liquid phase. The present study discusses the preparation of exfoliated graphite from commercially available intercalated graphite. The process of exfoliating the intercalated graphite has been holistically characterized using x‐ray diffraction, Fourier transform infrared spectroscopy (FTIR), and scanning electron microscope (SEM). The graphite with a surface area of 47.37 cc/g with a purity of 99% was found to have a maximum absorption of 80% (w/w) stearic acid as PCM. In addition, this paper investigates two synthetic routes to prepare the shape‐stabilized PCM. The blends are characterized and compared along six indicators: transition point, latent heat capacity, thermal conductivity, exudation behavior, FTIR, and SEM. Composite 1 refers to stearic acid absorbed in the exfoliated graphite. Composite 2 refers to the stearic acid absorbed in exfoliated graphite which is further treated with an elastomer SEBS. The leak test performed on both blends signifies that SEBS is an essential ingredient. The PCM composition optimized in this study can unlock various thermal applications with critical requirements where direct exposure of chemicals to the user is unacceptable. Further, the study itself is envisaged to serve as a framework to develop enhanced shape‐stabilized PCMs with tuneable thermal conductivity and extended operation life in application areas where leakage in liquid phase is a concern.

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Study on thermophysical properties of pentadecane and its composites with thermally expanded graphite as shape-stabilized phase change materials

Cited by 10 publications

References 37 publications

Microcalorimetry Techniques for Studying Interactions at Solid–Liquid Interface: A Review

Microcalorimetry Techniques for Studying Interactions at Solid–Liquid Interface: A Review

Microcalorimetry Techniques for Studying Interactions at Solid-Liquid Interface: A Review

Experimental investigation of enhanced form‐stable phase change material based on stearic acid/expanded graphite/SEBS composite

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