Crosslinked polymer networks of poly(ethylene glycol) (PEG) and hydroxyl terminated poly(dimethyl siloxane) (HTPDMS) as polymeric phase change material for thermal energy storage

Swati Sundararajan, Asit B. Samui, Prashant S. Kulkarni

Research output: Contribution to journalArticlepeer-review

29 Scopus citations

Abstract

With an aim to prepare phase change material (PCM) as self-sustaining film from poly(ethylene glycol) (PEG) having reduced hydrophilicity, cross-linking of PEG and hydroxy-terminated poly(dimethyl siloxane) (HTPDMS) was done by using tetraethyl orthosilicate (TEOS) as a cross-linking agent. Following the confirmation of the crosslinked polymer using FTIR and 13C-solid state NMR, the crystallization properties were studied using X-ray diffraction and polarized optical microscopy. DSC analysis indicated an increase in enthalpy with increasing concentration of PEG. The enthalpy of fusion and crystallization was observed to reach a maximum of 125 and 104 J g−1 respectively. Contact angle of 89.5° has been achieved for polymer with highest concentration of HTPDMS. The material with lowest PEG concentration was film forming in nature. This material can be extensively used as a thermal energy storage material particularly, in smart packaging.

Original languageEnglish
Pages (from-to)187-194
Number of pages8
JournalSolar Energy
Volume181
DOIs
StatePublished - 15 Mar 2019
Externally publishedYes

Keywords

  • Crosslinked polymer
  • Hydroxy-terminated poly(dimethylsiloxane)
  • Phase change material
  • Poly(ethylene glycol)
  • Thermal energy storage

ASJC Scopus subject areas

  • Renewable Energy, Sustainability and the Environment
  • General Materials Science

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