Chinnasamy, Veerakumar, et al. Alexandria Engineering Journal 71 (2023): 645-658.
Stearyl alcohol (SA) has been utilized as a phase change material (PCM) core in the fabrication of microencapsulated systems for thermal energy storage applications. In this study, SA was microencapsulated using a melamine formaldehyde (MF) shell via an in-situ polymerization process. Sodium dodecyl sulfate (SDS) was used as a surfactant, enabling the formation of stable emulsions. The resulting microencapsulated SA (MPCM) exhibited a uniform particle size distribution, with an average diameter of 4.7 µm.
Thermal characterization revealed that MPCMs prepared with 0.25 g of SDS and 5 g of PCM had an onset melting point of 42 °C and a latent heat of 137.7 Jg-1. The encapsulation efficiency reached a maximum of 51.9%, with the best core-to-shell ratio being 5:8.4. The MPCMs demonstrated enhanced thermal stability, with decomposition temperatures higher than that of pure SA. Additionally, no leakage was observed during the phase change process, confirming the material's suitability for thermal energy storage applications.
These findings highlight the potential of stearyl alcohol-based MPCMs in efficient heat transport and energy storage, offering a viable solution for renewable energy storage and thermal management systems.
Boldoo, Tsogtbilegt, et al. Journal of Energy Storage 73 (2023): 109218.
Stearyl alcohol (SAL) has emerged as an effective phase change material (PCM) in microencapsulated slurries for thermal energy storage (TES) applications, such as solar thermal and photovoltaic systems. This study compared the thermal performance of microencapsulated stearic acid (me-SAC) and stearyl alcohol (me-SAL) slurries, both dispersed in an ethylene glycol aqueous solution. Results revealed that me-SAL slurries exhibited superior latent heat energy compared to me-SAC at identical concentrations. Specifically, me-SAL slurries showed higher latent heat during both melting and solidification processes, making them more efficient for TES.
The microencapsulation process altered the melting and solidification temperatures of SAL, shifting them from 62.7°C and 52.7°C to 49.3°C/62.2°C and 52.7°C/29.6°C, respectively. In contrast, me-SAC exhibited more modest temperature changes. Additionally, the addition of CTAB surfactant enhanced the dispersion stability of the slurry, ensuring even distribution of the me-PCMs and preventing phase separation. At concentrations of 1 and 6 wt%, me-SAL slurries achieved latent heat energies of 10.45 J/g and 12.6 J/g, respectively, outperforming me-SAC, which showed values of 0.378 J/g and 3.89 J/g.
These findings confirm the higher potential of stearyl alcohol-based microencapsulated slurries for efficient TES applications, particularly in systems requiring enhanced thermal storage performance.
Güler, Onur, et al. Applied Thermal Engineering 247 (2024): 123105.
Stearyl alcohol (SAL) has been incorporated into UV-cured resin-coated expanded graphite (EG) to create a novel shape-stable composite phase change material (PCM) for thermal energy storage (TES). This approach addresses common limitations of traditional PCMs, such as low thermal conductivity and leakage. The composite, comprising 65% stearyl alcohol, 30% UV-curable resin, and 5% expanded graphite, was synthesized using a UV-curing method that ensures fast curing at low temperatures.
Thermal and structural characterization, including differential scanning calorimetry (DSC), thermogravimetric analysis (TGA), scanning electron microscopy (SEM), and Fourier-transform infrared spectroscopy (FTIR), confirmed the material's high thermal stability and exceptional shape retention. The composites exhibited minimal leakage (0.89%) and demonstrated a significant melting enthalpy of 153.1 J/g, indicating a high thermal energy storage capacity. Moreover, the material withstood temperatures up to 207°C, as shown by TGA analysis.
These findings reveal that stearyl alcohol, when combined with expanded graphite in a UV-cured resin matrix, provides an effective, high-performance solution for sustainable energy management. The composite's ability to retain its shape during phase transitions and its superior thermal properties make it a promising material for future applications in renewable energy systems, improving energy efficiency and reducing carbon emissions.
What is the molecular weight of Stearyl alcohol?
The molecular weight of Stearyl alcohol is 270.49.
What is the boiling point of Stearyl alcohol?
The boiling point of Stearyl alcohol is 210 °C at 15mmHg.
What is the melting point of Stearyl alcohol?
The melting point of Stearyl alcohol is 56-59 °C (lit.).
What is the density of Stearyl alcohol?
The density of Stearyl alcohol is 0.812g/ml.
What are some synonyms for Stearyl alcohol?
Some synonyms for Stearyl alcohol are N-Octadecanol, n-Octadecyl alcohol, and 1-Octadecanol.
What are some typical applications of Stearyl alcohol?
Some typical applications of Stearyl alcohol include its use as a dispersing agent, emulsifying agent, lubricant, and intermediate in organic synthesis.
What is the IUPAC name of Stearyl alcohol?
The IUPAC name of Stearyl alcohol is Octadecan-1-ol.
What is the molecular formula of Stearyl alcohol?
The molecular formula of Stearyl alcohol is C18H38O.
What is the SMILES notation for Stearyl alcohol?
The SMILES notation for Stearyl alcohol is CCCCCCCCCCCCCCCCCCO.
What is the InChI Key for Stearyl alcohol?
The InChI Key for Stearyl alcohol is InChI=1S/C18H38O/c1-2-3-4-5-6-7-8-9-10-11-12-13-14-15-16-17-18-19/h19H,2-18H2,1H3.
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