Polyethylene glycol/polylactic acid block co‐polymers as solid–solid phase change materials
نویسندگان
چکیده
Phase change materials (PCMs) are promising thermal energy storage due to their high specific latent heat. Conventional PCMs typically exploit the solid–liquid (s–l) transition. However, leakage and leaching common issues for PCMs, which have be addressed before usage in practical applications. In contrast, solid–solid (s–s) would naturally overcome these inherent form stability homogeneity. this study, we report a new type of s–s PCM based on chemically linked polyethylene glycol (PEG, portion) with polylactic acid (PLA, support block co-polymer. Solid-solid heat up 56 J/g could achieved, melting points between 44 °C 55 °C. For comparison, PEG was physically mixed into PLA matrix PEG:PLA composite. composite material saw 9% upon heating, corresponding loss capacity. mPEG/PLA co-polymers were found completely homogeneous thermally stable even when heated above its phase transition temperature, no observable leakage, demonstrating superiority chemical linking strategies ensuring stability.
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ژورنال
عنوان ژورنال: SmartMat
سال: 2023
ISSN: ['2766-8525', '2688-819X']
DOI: https://doi.org/10.1002/smm2.1188