Thermodynamics Research Center / ThermoML | Thermochimica Acta

Effects of SiO2 nanoparticles on structure and property of form-stable phase change materials made of cellulose acetate phase inversion membrane absorbed with capric-myristic-stearic acid ternary eutectic mixture

Cai, Y.[Yibing], Hou, X.[Xuebin], Wang, W.[Weiwei], Liu, M.[Mengmeng], Zhang, J.[Junhao], Qiao, H.[Hui], Huang, F.[Fenglin], Wei, Q.[Qufu]
Thermochim. Acta 2017, 653, 49-58
ABSTRACT
The innovative form-stable phase change materials (PCMs) were fabricated by incorporating capric-myristicstearic acid (CMS) ternary eutectic mixture with cellulose acetate (CA) phase inversion membrane. CMS as model PCM, with melting point near ambient temperature as the temperature range was most valuable in practice. Effects of different SiO2 amounts on surface features, structural morphology and absorption capacity of CA membrane were investigated. The SiO2 nanoparticles created porous structure and increased CMS incorporation capability of CA membrane, the maximum absorption capacity of CA-SiO2 membrane was about 80.3 wt.%. The enthalpies of melting of form-stable PCMs were 76.6 kJ/kg for CA membrane and 99.8 kJ/kg for CA-SiO2 membrane, respectively. The SiO2 nanoparticles increased remarkably thermal stability property of form-stable PCMs. As compared to CA-SiO2 membrane, the control temperature time of CMS/CA-SiO2 formstable PCMs was increased by about 46.8%. The developed form-stable PCMs demonstrated good thermal storage/ retrieval property and thermal insulation capability.
Compounds
# Formula Name
1 C10H20O2 decanoic acid
2 C14H28O2 tetradecanoic acid
3 C18H36O2 octadecanoic acid
Datasets
The table above is generated from the ThermoML associated json file (link above). POMD and RXND refer to PureOrMixture and Reaction Datasets. The compound numbers are included in properties, variables, and phases, if specificied; the numbers refer to the table of compounds on the left.
Type Compound-# Property Variable Constraint Phase Method #Points
  • POMD
  • 1
  • Normal melting temperature, K ; Crystal
  • Crystal
  • Liquid
  • Air at 1 atmosphere
  • DTA
  • 1
  • POMD
  • 1
  • Molar enthalpy of transition or fusion, kJ/mol ; Crystal
  • Crystal
  • Liquid
  • Air at 1 atmosphere
  • DSC
  • 1
  • POMD
  • 2
  • Normal melting temperature, K ; Crystal
  • Crystal
  • Liquid
  • Air at 1 atmosphere
  • DTA
  • 1
  • POMD
  • 2
  • Molar enthalpy of transition or fusion, kJ/mol ; Crystal
  • Crystal
  • Liquid
  • Air at 1 atmosphere
  • DSC
  • 1
  • POMD
  • 3
  • Normal melting temperature, K ; Crystal
  • Crystal
  • Liquid
  • Air at 1 atmosphere
  • DTA
  • 1
  • POMD
  • 3
  • Molar enthalpy of transition or fusion, kJ/mol ; Crystal
  • Crystal
  • Liquid
  • Air at 1 atmosphere
  • DSC
  • 1
  • POMD
  • 3
  • 1
  • 2
  • Eutectic temperature, K ; Crystal - 3
  • Crystal - 3
  • Crystal - 1
  • Crystal - 2
  • Liquid
  • Air at 1 atmosphere
  • DTA
  • 1
  • POMD
  • 3
  • 1
  • 2
  • Eutectic composition: mass fraction - 1 ; Crystal - 3
  • Crystal - 3
  • Crystal - 1
  • Crystal - 2
  • Liquid
  • Air at 1 atmosphere
  • Derived from phase diagram analysis
  • 1
  • POMD
  • 3
  • 1
  • 2
  • Eutectic composition: mass fraction - 2 ; Crystal - 3
  • Crystal - 3
  • Crystal - 1
  • Crystal - 2
  • Liquid
  • Air at 1 atmosphere
  • Derived from phase diagram analysis
  • 1