Magnetic nanoparticle-embedded PCM nanocapsules based on paraffin core and polyurea shell

Sangphil Park, Yeongmin Lee, Yong Seok Kim, Hyang Moo Lee, Jung Hyun Kim, In Woo Cheong, Won Gun Koh

Research output: Contribution to journalArticlepeer-review

110 Citations (Scopus)


We described the synthesis and characterization of magnetic Fe3O4 nanoparticle (NP)-embedded phase change material (PCM) nanocapsules (Mag-PCM) based on a paraffin core and polyurea shell (paraffin@polyurea). The Mag-PCM nanocapsules were synthesized via interfacial polycondensation between tolylene diisocyanate (TDI) and ethylene diamine (EDA) with various concentrations (0, 2.2, 3.7, and 4.6wt%) of Fe3O4 nanoparticles. FTIR and TGA analyses confirmed the successful preparation of Mag-PCM nanocapsules. TEM and SEM images revealed that most of the Fe3O4 NPs were localized in the polyurea shell layer due to the Pickering effect. Laser flash (LFA) and DSC analyses demonstrated that the embedment of Fe3O4 NPs could increase the thermal conductivity of PCM nanocapsules and reduce the supercooling of the paraffin between bulk and nano-size confinement conditions.

Original languageEnglish
Pages (from-to)46-51
Number of pages6
JournalColloids and Surfaces A: Physicochemical and Engineering Aspects
Issue number1
Publication statusPublished - 2014 May 20

Bibliographical note

Funding Information:
This work was supported by the Engineering Research Center of Excellence Program of Ministry of Science, ICT & Future Planning (MSIP)/National Research Foundation of Korea (NRF) ( R11-2007-050-03002-0 “Active Polymer Center for Pattern Integration at Yonsei University“) and by Ministry of Trade Industry and Energy/Korea Evaluation Institute of Industrial Technology (KEIT) ( 10043265 ).

All Science Journal Classification (ASJC) codes

  • Surfaces and Interfaces
  • Physical and Theoretical Chemistry
  • Colloid and Surface Chemistry


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