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Journals / Afyon Kocatepe Üniversitesi Fen ve Mühendislik Bilimleri Dergisi / 2026 / Cilt: 26 Sayı: 2

Production and Characterization of Encapsulated Phase Change Materials for Thermal Energy Storage

Termal Enerji Depolaması için Kapsüllenmiş Faz Değişim Malzemelerinin Üretimi ve Karakterizasyonu

Muhammet Kaan Yeşilyurt(ATATURK UNIVERSITY)0000-0002-7207-1743
Pages
497–507
Publication Date
2026-03-27
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AI Summary & Key Takeaways

AI Insight
⚡ TL;DR(Too Long; Didn't Read)

The capsules were found to have potential for slurry preparation for thermal applications.

📌 3 Key Takeaways

🎯
Objective & Hypothesis:Phase-change materials (PCM) have become commercially available as a result of advanced microencapsulation applications that have increased the thermal and mechanical properties of these materials.
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Key Findings & Data:The synthesized capsules were 1-5 μm in diameter, spherical with dents on their surfaces.
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Conclusion & Impact:The capsules were found to have potential for slurry preparation for thermal applications.
🔬Design:Araştırma Makalesi
📍Scope:Comprehensive Sample
⚙️Variables:Faz değişim malzemeleri · kapsülleme · yerinde polimerizasyon

Abstract

Phase-change materials (PCM) have become commercially available as a result of advanced microencapsulation applications that have increased the thermal and mechanical properties of these materials. Microencapsulation can be achieved by using different techniques and various core and shell materials. In this study, the synthesis of microcapsules with a coconut oil core and melamine formaldehyde shell has been carried out using the in-situ polymerization method, and the main important properties of this microencapsulated PCM, such as physical, chemical, and thermal, have been analyzed. The microcapsules were characterized using scanning electron microscopy (SEM), Energy Dispersive X-Ray (EDX), Fourier Transform Infrared (FT-IR) spectroscopy, X-Ray diffraction, Differential Scanning Calorimetry (DSC) and Thermo-gravimetric (TG) analysis. The synthesized capsules were 1-5 μm in diameter, spherical with dents on their surfaces. Analyses showed that the core of the microcapsules melted at 21.1 °C and crystallized at 9.7 °C. Latent heats for melting and crystallization were obtained to be 105.1 and 76.3 J/g, respectively. TGA showed that encapsulated PCM decomposed in two steps and that its chemical stability was good. Encapsulation ratio was 78.59 percent, whereas the specific heat capacity and thermal conductivity of synthesized capsules were 2.726 J/gK and 0.296 W/mK, respectively. The capsules were found to have potential for slurry preparation for thermal applications.

Özet

Faz değiştiren malzemeler (FDM), bu malzemelerin termal ve mekanik özelliklerini artıran gelişmiş mikrokapsülleme uygulamalarının bir sonucu olarak ticari olarak kullanılabilir hale gelmiştir. Mikrokapsülleme, farklı teknikler ve çeşitli çekirdek ve kabuk malzemeleri kullanılarak gerçekleştirilebilir. Bu çalışmada, in-situ polimerizasyon yöntemi kullanılarak hindistancevizi yağı çekirdekli ve melamin formaldehit kabuklu mikrokapsüllerin sentezi gerçekleştirilmiş ve bu mikrokapsüllenmiş FDM'nin fiziksel, kimyasal ve termal gibi temel önemli özellikleri analiz edilmiştir. Mikrokapsüller, taramalı elektron mikroskobu (SEM), Enerji Dağıtıcı X-Işını (EDX), Fourier Dönüşümlü Kızılötesi (FT-IR) spektroskopisi, X-Işını kırınımı, Diferansiyel Taramalı Kalorimetri (DSC) ve Termo-gravimetrik (TG) analiz kullanılarak karakterize edilmiştir. Sentezlenen kapsüller 1-5 μm çapında, küresel ve yüzeylerinde ezikler vardı. Analizler, mikrokapsüllerin çekirdeğinin 21,1 °C'de eridiğini ve 9,7 °C'de kristalleştiğini göstermiştir. Erime ve kristalleşme için gizli ısılar sırasıyla 105,1 ve 76,3 J/g olarak elde edildi. TGA, kapsüllenmiş FDM'nin iki adımda ayrıştığını ve kimyasal kararlılığının iyi olduğunu göstermiştir. Kapsüllenme oranı %78,59 iken, sentezlenen kapsüllerin özgül ısı kapasitesi ve termal iletkenliği sırasıyla 2,726 J/gK ve 0,296 W/mK olarak belirlenmiştir. Kapsüllerin termal uygulamalar için bulamaç hazırlama potansiyeline sahip olduğu sonucuna varılmıştır.

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Cite This Article

Yeşilyurt, M. K. (2026). Production and Characterization of Encapsulated Phase Change Materials for Thermal Energy Storage. Afyon Kocatepe Üniversitesi Fen ve Mühendislik Bilimleri Dergisi, Cilt: 26 Sayı: 2, 497–507. https://doi.org/10.35414/akufemubid.1722299

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