Fatty acid alkyl ester nanowebs suitable for renewable thermal energy storage


Önder Karaoğlu E., SARIER N.

THERMOCHIMICA ACTA, vol.690, 2020 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 690
  • Publication Date: 2020
  • Doi Number: 10.1016/j.tca.2020.178698
  • Journal Name: THERMOCHIMICA ACTA
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, Aerospace Database, Analytical Abstracts, Aquatic Science & Fisheries Abstracts (ASFA), Biotechnology Research Abstracts, Chemical Abstracts Core, Chimica, Communication Abstracts, Compendex, INSPEC, Metadex, Civil Engineering Abstracts
  • Istanbul Technical University Affiliated: Yes

Abstract

Owing to their high heat absorption and release capacities, chemical and thermal stability, non-toxicity, two fatty acid alkyl esters (FAAEs), methyl palmitate (MP) and isopropyl palmitate (IPP), were investigated for their use as thermal energy storage (TES) material in a shape stabilized form. Four nanowebs were developed via coaxial electrospinning, using poly(acrylo nitrile) (PAN) or poly(methacrylic acid-co-ethyl acrylate) (PMEA) shell to envelope MP or IPP core. Scanning electron microscope (SEM), transmission electron microscope (TEM) images confirmed cylindrical nanofiber formation, demonstrating a coaxial sheath-core morphology. The phase change enthalpies of PAN-MP, PMEA-MP nanowebs, with average diameters of 259-289 nm, were 71 J g(-1) and 86 J g(-1) at 28-32 degrees C, and those of PAN-IPP, PMAE-IPP were 72 J g(-1) and 60 J g(-1) at 7-15 degrees C during heating cycle in differential scanning calorimeter (DSC) analyses. A composite including PAN-MP nanoweb performed enhanced thermo-physical properties than its control counterpart.