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Phase diagrams of polyethylene blends by Raman spectroscopy

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Summary

The Raman internal mode region analysis of polyethylene (PE) is extended to studies of blends of different PEs so as to obtain a phase diagram showing the magnitude of crystalline (Pc), amorphous (Pa) and interfacial (Pb) phases at different compositions. The non-cocrystallizable HDPE/LDPE blends shows additivity in phase structure with blend composition. Enlarged share of Pb is seen for compatible blends of HDPE/LLDPE and especially for HDPE with VLDPE of low crystallinity. This method offers an easy access to direct observing compatibility of different PEs on a molecular level.

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Authors and Affiliations

  1. Changchun Institute of Applied Chemistry, Academia Sinica, Changchun, 130022, Jilin, People's Republic of China

    Jianguo Wang, Deren Pang & Baotong Huang

Authors
  1. Jianguo Wang
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  2. Deren Pang
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  3. Baotong Huang
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Supported by Chinese Petrochemical Corporation (SINOPEC)

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Wang, J., Pang, D. & Huang, B. Phase diagrams of polyethylene blends by Raman spectroscopy. Polymer Bulletin 24, 241–246 (1990). https://doi.org/10.1007/BF00297324

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  • DOI: https://doi.org/10.1007/BF00297324

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