preparation and characterization of phase change materials microcapsules for thermal energy storage

The main purpose of this research is preparing microencapsulated phase change materials (mepcm) by using a uv-curable pickering emulsion polymerization with pmma-graphene oxide hybrid shell# phase change materials (pcms) with high latent heat are used in thermal energy storage (tes) which is an efficient and sustainable way for storing energy# bio-based pcms are less flammable than paraffins and can absorb, store and release large amounts of latent heat# therefore, coconut oil which is a bio-based pcm was used as the core in this project# the emulsion was stabilized by graphene oxide (go), in which go was absorbed spontaneously on the surface of methyl methacrylate to produce hybrid shell# the polymerization process was carried out at ambient temperature for 30 minutes by utilizing led as a source of ultraviolet radiation# the effect of agitation speed (i#e# 900 and 1200 rpm) on particle size and core content of microcapsules were investigated by optical microscopy (om) and differential scanning calorimetry (dsc)# in addition, the thickness of shell for two conditions was calculated# according to om results, microcapsules produced at 900 and 1200 rpm conditions had a mean size of 28 and 12 µm, respectively# in addition, the core content of the samples was found to be 55#37% and 56#25%#