In situ preparation and characterization of encapsulated high-chain fatty acid ester-based phase change material (PCM) in poly(urethane-urea) by using poly-functional amino alcohol

Ahmet Alper Aydin*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

65 Citations (Scopus)

Abstract

A fatty acid ester-based phase change material (PCM) has been encapsulated with a proper poly-functional amino alcohol and toluene diisocyanate under in situ polymerization conditions for further use in thermal applications. N-(2-hydroxyethyl)ethylenediamine has been utilized for the first time for encapsulation of PCMs to form poly(urethane-urea) shell material. The research reports the influence of utilized anionic and non-ionic surfactants on properties of the encapsulated end products at different surfactant/PCM stoichiometric ratios. The thermal properties are reported in terms of phase change temperature, enthalpy and PCM encapsulation efficiency with necessary statistical calculations by differential scanning calorimeter (DSC) analyses after the conducted effective scrubbing procedure for excess PCM in the boundary layer and on walls of the shell material. Particle size distribution analysis and high-resolution transmission electron microscope (HRTEM) imaging have been utilized for further discussions on relations between surfactant types, stoichiometric ratios and structural properties. The prepared PCM composites with micro- and nano-structures are suitable candidates for use in desirable exterior building materials and solar units as outdoor thermal energy storage agents for construction of energy efficient buildings.

Original languageEnglish
Pages (from-to)477-483
Number of pages7
JournalChemical Engineering Journal
Volume231
DOIs
Publication statusPublished - Sept 2013
Externally publishedYes

Keywords

  • Encapsulation
  • Fatty acid ester
  • N-(2-hydroxyethyl)ethylenediamine
  • Phase change material
  • Poly(urethane-urea)
  • Thermal energy storage

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