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Thermal and mechanical properties of bio-based PCMs encapsulated with nanofibrous structure

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  • Hu, Wen
  • Yu, Xun

Abstract

An environmentally friendly phase change material (PCM) was successfully prepared by encapsulating natural soy wax into polyurethane (PU) nanofibers using coaxial electrospinning technique. The morphology and the structure of the wax/PU composites were characterized. Thermal behaviors as well as mechanical properties of the composites were also investigated. The results indicated that coaxial electrospinning produced uniform fiber morphology with a core–shell structure and a homogeneous wax distribution throughout the core of the fibers. The soy wax was successfully encapsulated into PU fibers without being miscible with PU fibers. Thermal analysis results show that the enthalpy increases as the wax content increases. The fibrous structures exhibited balanced thermal storage and released properties for thermo-regulating function. The thermal properties were unaltered after 100 heating–cooling cycles, demonstrating that the composite fibers had good thermal stability and reliability. Tensile tests also indicate that the presence of wax enhanced the modulus and lowered the tensile strain.

Suggested Citation

  • Hu, Wen & Yu, Xun, 2014. "Thermal and mechanical properties of bio-based PCMs encapsulated with nanofibrous structure," Renewable Energy, Elsevier, vol. 62(C), pages 454-458.
    • Handle: RePEc:eee:renene:v:62:y:2014:i:c:p:454-458
    DOI: 10.1016/j.renene.2013.07.047
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    References listed on IDEAS

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    1. Kenisarin, Murat & Mahkamov, Khamid, 2007. "Solar energy storage using phase change materials," Renewable and Sustainable Energy Reviews, Elsevier, vol. 11(9), pages 1913-1965, December.
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    1. Darzi, Mohammad Ebrahimnejad & Golestaneh, Seyyed Iman & Kamali, Marziyeh & Karimi, Gholamreza, 2019. "Thermal and electrical performance analysis of co-electrospun-electrosprayed PCM nanofiber composites in the presence of graphene and carbon fiber powder," Renewable Energy, Elsevier, vol. 135(C), pages 719-728.
    2. Ushak, Svetlana & Suárez, Miriam & Véliz, Sussy & Fernández, Angel G. & Flores, Elsa & Galleguillos, Héctor R., 2016. "Characterization of calcium chloride tetrahydrate as a phase change material and thermodynamic analysis of the results," Renewable Energy, Elsevier, vol. 95(C), pages 213-224.
    3. Wu, Yang & Chen, Changzhong & Jia, Yifan & Wu, Jie & Huang, Yong & Wang, Linge, 2018. "Review on electrospun ultrafine phase change fibers (PCFs) for thermal energy storage," Applied Energy, Elsevier, vol. 210(C), pages 167-181.
    4. Baylis, Calene & Cruickshank, Cynthia A., 2023. "Review of bio-based phase change materials as passive thermal storage in buildings," Renewable and Sustainable Energy Reviews, Elsevier, vol. 186(C).
    5. Song, Shaokun & Ai, Hong & Zhu, Wanting & Qiu, Feng & Wang, Yuqi & Zhou, Jian, 2020. "Eco-friendly electrospun nanofibrous membranes with high thermal energy capacity and improved thermal transfer efficiency," Renewable Energy, Elsevier, vol. 148(C), pages 504-511.

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