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Crystalline-amorphous phase transition of hyperbranched polyurethane phase change materials for energy storage

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Abstract

Hyperbranched polyurethane solid–solid phase change material (HB-PUPCM) has been prepared via a two-step process. The phase transition behaviors and morphologies of these HB-PUPCM films were investigated using differential scanning calorimetry (DSC), wide-angle X-ray diffraction (WAXD) and polarizing optical microscopy (POM). PEG soft segment in the polyurethane was found to be crystalline at room temperature. However, when the temperature was raised to PEG’s melting point, polyurethane did not melt into the liquid state as in the case of pure PEG but changed to an amorphous solid state. In HB-PUPCM, PEG’s molecules probably are tied to the hard segment chain so strongly by the chemical bonds that they cannot change to a liquid state but change to the amorphous state in the transition processing.

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References

  1. Feldman D, Banu D (1996) Thermochim Acta 272:243

    Article  CAS  Google Scholar 

  2. Zalba B, Marin JM, Cabeza LF, Mehling H (2003) Appl Therm Eng 23:251

    Article  CAS  Google Scholar 

  3. Pielichowski K, Flejtuch K (2005) Polym Adv Technol 16:127

    Article  CAS  Google Scholar 

  4. Liang XH, Guo YQ, Guo LZ, Ding EY (1995) Macromolecules 28:6551

    Article  CAS  Google Scholar 

  5. Jing Y, Ding EY, Li GK (2002) Polymer 43:117

    Article  Google Scholar 

  6. Zhang M, Na Y, Jiang ZH (2005) Chem J Chinese Univ 26:170

    CAS  Google Scholar 

  7. Guo YQ, Tong Z, Chen MC, Liang XH (2003) J Appl Polym Sci 88:652

    Article  CAS  Google Scholar 

  8. He TB, Hu HJ (2001) Functional polymer and new technology. Chemical Industrial Press, Beijing, China

    Google Scholar 

Download references

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Authors and Affiliations

  1. College of Chemistry, Xiangtan University, Xiangtan, 411105, Hunan Province, P.R. China

    Qi Cao & Pengsheng Liu

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  1. Qi Cao
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  2. Pengsheng Liu
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Correspondence to Pengsheng Liu.

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Cao, Q., Liu, P. Crystalline-amorphous phase transition of hyperbranched polyurethane phase change materials for energy storage. J Mater Sci 42, 5661–5665 (2007). https://doi.org/10.1007/s10853-006-0884-z

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  • DOI: https://doi.org/10.1007/s10853-006-0884-z

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