Graphite nanoplates loading into eutectic mixture of Adipic acid and Sebacic acid as phase change material

SEKİ Y., Ince S., EZAN M. A., TURGUT A., EREK A.

SOLAR ENERGY MATERIALS AND SOLAR CELLS, cilt.140, ss.457-463, 2015 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 140
  • Basım Tarihi: 2015
  • Doi Numarası: 10.1016/j.solmat.2015.05.003
  • Dergi Adı: SOLAR ENERGY MATERIALS AND SOLAR CELLS
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.457-463
  • Anahtar Kelimeler: Phase change materials, Eutectic mixture, High temperature, THERMAL-ENERGY STORAGE, CONDUCTIVITY ENHANCEMENT
  • Dokuz Eylül Üniversitesi Adresli: Evet

Özet

In this study, a series of binary mixtures of Adipic acid (AA) and Sebacic acid (SA) at various mass fractions were prepared. A binary mixture of AA and SA in the ratio of 48.0:52.0 wt% was shown to be an eutectic mixture with melting temperature of 116 degrees C, melting latent heat of 206.0 J g(-1). In order to improve thermal properties of AA-SA eutectic mixture, multilayer graphite nanoplates (GNP) at different mass fractions (0.1, 0.3, and 0.5 wt%) was loaded into AA-SA mixture. The loading of 0.5 wt% GNP decreased the extent of supercooling from 17.7 to 3.6 degrees C. GNP loading did not change the thermal stability, functional groups and crystallographic properties of AA-SA eutectic mixture. Thermal conductivity of AA-SA was improved by GNP loading. Besides, morphological properties of GNP loaded AA-SA were examined by scanning electron microscopy observations. Thermal reliability of the AA-SA eutectic mixtures was investigated at different thermal cycles. Eutectic mixture of AA-SA containing GNP of 0.1 and 0.5 wt% showed relatively smaller variations in melting temperature and freezing temperatures. (C) 2015 Elsevier B.V. All rights reserved.