Nanoencapsulation of Organic Phase Change Material in Water via Coacervation Using Amphoteric Copolymer

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18 Citations (Scopus)


Nanoencapsulation of phase change materials are receiving increasing attention because of enhanced thermal conductivity and thermal capacity as well as ease of incorporation into the matrix for a wide range of applications. In this work, we have developed a simple and efficient approach to fabricate nanoencapsulated organic phase change (NEPCM) particles in water via coacervation using an amphoteric and temperature-sensitive polymer. The chitosan-co-poly(methacrylic acid) (CTS-co-PMAA) copolymer plays dual functions as an emulsion stabilizer and a shell material. The fabrication steps involve emulsion formation, followed by coacervation to form particle shell through adjusting solution pH, and finally rigidization of the shell via glutaraldehyde cross-linking. This method achieves high encapsulation efficiency (up to 84%) with a PCM content of 66%, high thermal capacity (LHs 165 J g-1 and LHm 169 J g-1), and high thermal cycling stability over 100 phase change cycles.

Original languageEnglish
Pages (from-to)21080-21088
Number of pages9
JournalIndustrial and Engineering Chemistry Research
Issue number46
Publication statusPublished - 20 Nov 2019

ASJC Scopus subject areas

  • General Chemistry
  • General Chemical Engineering
  • Industrial and Manufacturing Engineering


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