Abstract
Drawn tapes made of polypropylene (PP), low density polyethylene (LDPE) and of their PP/LDPE blend (70/30 w/w) were studied by means of broad-line NMR (Nuclear Magnetic Resonance). The parameters characterizing the anisotropy of the NMR second moments were used for estimation of macromolecular orientation in drawn tapes. A model for this particular blend was proposed on the basis of NMR experiments. According to this model the LDPE component of the drawn blend is oriented in a such extent as similarly drawn homopolymer unlike the PP component which is oriented to a much lower degree after drawing of the blend.
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