A Copolymer of Monomethoxy Poly(ethylene glycol)‐Polycaprolactone as Form‐Stable Phase Change Materials for Thermal Energy Storage

A Copolymer of Monomethoxy Poly(ethylene glycol)‐Polycaprolactone as Form‐Stable Phase Change Materials for Thermal Energy Storage

ChemistrySelect

10.1002/slct.202302997

http://dx.doi.org/10.1002/slct.202302997

Pin Jin Ong, Hui Yi Shuko Lee, Jayven Chee Chuan Yeo, Zibiao Li, Johnathan Joo Cheng Lee, Suxi Wang, Xuesong Yin, Pei Wang, Jianwei Xu, Xian Jun Loh, Joseph Kinyanjui Muiruri, Qiang Zhu

18 October 2023

Ong, P. J., Lee, H. Y. S., Yeo, J. C. C., Li, Z., Lee, J. J. C., Wang, S., Yin, X., Wang, P., Xu, J., Loh, X. J., Muiruri, J. K., & Zhu, Q. (2023). A Copolymer of Monomethoxy Poly(ethylene glycol)‐Polycaprolactone as Form‐Stable Phase Change Materials for Thermal Energy Storage. ChemistrySelect, 8(39). Portico. https://doi.org/10.1002/slct.202302997

AbstractIn this work, a series of monomethoxy poly(ethylene glycol)‐polycaprolactone (mPEG‐PCL) copolymers with different mass percentages of mPEG was chemically synthesized as form‐stable phase change materials (FSPCMs) for thermal energy storage (TES) application for the first time. Their chemical structures, surface morphology, and thermal properties were studied in terms of nuclear magnetic resonance (NMR), Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), thermogravimetric analysis (TGA), and differential scanning calorimetry (DSC). 1H NMR, gel permeation chromatography (GPC), and FTIR results confirmed the successful ring‐opening polymerization of ϵ‐caprolactone with mPEG macromonomer, and the respective average molecular weight of the copolymers was obtained in the range of 9704–17346 g mol−1. DSC analysis results revealed that the copolymers have a phase change temperature and latent heat in the range of 52.8–57.9 °C and 88.8–114.4 J g−1 respectively and TGA analysis showed that they are thermally stable up to 150 °C. Leakage test results showed that the copolymers (mPEG)x‐(PCL)y displayed excellent form stability with minimal leakage while thermal cycling revealed good thermal reliability. In addition, the copolymers successfully demonstrated their ability to store and release heat for a prolonged period, making them suitable for TES applications like heating water storage tanks.

Publisher Copyright

This research / project is supported by the Agency for Science, Technology and Research - Career Development Fund
Grant Reference no. : C210812038

This is the peer reviewed version of the following article: Ong, P. J., Lee, H. Y. S., Yeo, J. C. C., Li, Z., Lee, J. J. C., Wang, S., Yin, X., Wang, P., Xu, J., Loh, X. J., Muiruri, J. K., & Zhu, Q. (2023). A Copolymer of Monomethoxy Poly(ethylene glycol)‐Polycaprolactone as Form‐Stable Phase Change Materials for Thermal Energy Storage. ChemistrySelect, 8(39). Portico. https://doi.org/10.1002/slct.202302997 , which has been published in final form at doi.org/10.1002/slct.202302997. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Use of Self-Archived Versions. This article may not be enhanced, enriched or otherwise transformed into a derivative work, without express permission from Wiley or by statutory rights under applicable legislation. Copyright notices must not be removed, obscured or modified. The article must be linked to Wiley’s version of record on Wiley Online Library and any embedding, framing or otherwise making available the article or pages thereof by third parties from platforms, services and websites other than Wiley Online Library must be prohibited.

https://oar.a-star.edu.sg/communities-collections/articles/20422

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Institute of Sustainability for Chemicals, Energy and Environment