Random copolymer of poly(polyethylene glycol methyl ether)methacrylate as tunable transition temperature solid-solid phase change material for thermal energy storage

Polymer based phase change materials (PCM) for thermal energy storage (TES) applications have gained some attention recently due to their high stability and potential solid transition. Here, we are the first utilize a simple copolymerization strategy static tunability transition temperature (Tt) of polymeric PCM. The between short long side chain polyethylene glycol methacrylate polymers was designed tune Tt with minimum impact on density. Polarized optical microscope x-ray techniques were also used understand relationship crystal structure different copolymer composition which discussed in context. PCM successfully developed tunable ranged from 18 °C 35 is suitable toward building envelop applications.