Hyperbranched polyurethane as novel solid-solid phase change material for thermal energy storage |
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Authors: | Qi Cao Pengsheng Liu |
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Institution: | College of Chemistry, Xiangtan University, Xiangtan 411105, Hunan Province, PR China |
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Abstract: | A series of novel hyperbranched polyurethane copolymer (HB-PUPCM) using hyperbranched polyester as chain extender was prepared via a two-step process. The phase transition behaviors and morphology of the HB-PUPCM films were investigated using differential scanning calorimetry (DSC), dynamic mechanical thermal analysis (DMA), thermo-gravimetric analysis (TGA), wide-angle X-ray diffraction (WAXD), polarizing optical microscopy (POM) and tapping-mode atomic force microscopy (AFM). HB-PUPCM was proven to a good polymeric solid-solid phase change heat storage material. |
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Keywords: | Hyperbranched polyurethane Solid-solid phase change material Polyethylene glycol Hyperbranched polyester Micro-phase separation Heat storage |
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