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Structural and property correlations of ethylen-α-olefin copolymers

  • Polymer Science
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Abstract

Ethyleneα-olefin copolymers differ from other polyethylenes in that:

  1. -

    there is no long chain branching;

  2. -

    short chain branching is determined by the comonomer unit;

  3. -

    the molecular mass distribution is sharp;

  4. -

    the side chain distribution on different molecules is broad;

  5. -

    the sequential distribution of branching is very broad along the molecular chains, which becauses a multi-peak lamella distribution, and a multi-peak melting heat.

With the help of a cross-fractionation method we interpreted the differences of the experimental data, according to the molecular mass fractionation and the branching received.

The thermal history has a great influence on ethylene-α-olefin copolymers, evidenced in the crystallization time for the same branching type, but with extremely varied branching percentages.

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Author notes

  1. G. Bodor

    Present address: Forschungsinstitut für die Kunststoffindustrie, H-1950, Budapest XIV, Hungary krt. 114

Authors and Affiliations

  1. Polymer Research Institute, Bundapest, Hungary

    G. Bodor, H. J. Dalcolmo & O. Schröter

  2. Leuna-Werke „Walter Ulbricht“, Merseburg, G.D.R.

    H. J. Dalcolmo

  3. Pedag. Hochschule, Erfurt, G.D.R.

    O. Schröter

Authors
  1. G. Bodor
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  2. H. J. Dalcolmo
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  3. O. Schröter
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Bodor, G., Dalcolmo, H.J. & Schröter, O. Structural and property correlations of ethylen-α-olefin copolymers. Colloid & Polymer Sci 267, 480–493 (1989). https://doi.org/10.1007/BF01416053

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  • DOI: https://doi.org/10.1007/BF01416053

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