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Crystallization and morphology of binary blends of linear and branched polyethylene

  • Crystalline Polymers
  • Conference paper
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Solidification Processes in Polymers

Part of the book series: Progress in Colloid & Polymer Science ((PROGCOLLOID,volume 87))

Abstract

The paper reviews crystallization kinetics and morphology studies of binary blends of a low molar mass linear polyethylene sharp fraction (M w=2500) and higher molar mass samples of various linear and branched polyethylenes. Cocrystallization and segregation phenomena occurring in these polymers are reported as a function of molar mass and degree of chain branching of the high molar mass component, blend composition, and crystallization temperature. Branched polyethylene with 1.5 mol% of ethyl groups cocrystallizes with the low molar mass linear PE fraction, whereas segregation of the low molar mass polymer is the dominant feature in the blends with polymers having a lower degree of chain branching (≤0.5 mol%). The applicability of differential scanning calorimetry, polarized light microscopy, and transmission electron microscopy to reveal cocrystallization and segregation phenomena in polyethylene is discussed.

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Authors and Affiliations

  1. Department of Polymer Technology, Royal Institute of Technology, S-10044, Stockholm, Sweden

    Ulf W. Gedde

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  1. Ulf W. Gedde
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J. -F. Janssson U. W. Gedde

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© 1992 Dr. Dietrich Steinkopff Verlag GmbH & Co. KG

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Gedde, U.W. (1992). Crystallization and morphology of binary blends of linear and branched polyethylene. In: Janssson, J.F., Gedde, U.W. (eds) Solidification Processes in Polymers. Progress in Colloid & Polymer Science, vol 87. Steinkopff. https://doi.org/10.1007/BFb0115566

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  • DOI: https://doi.org/10.1007/BFb0115566

  • Published:

  • Publisher Name: Steinkopff

  • Print ISBN: 978-3-7985-0911-5

  • Online ISBN: 978-3-7985-1682-3

  • eBook Packages: Springer Book Archive

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