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Structure and morphology of linear polyethylene extrudates induced by elongational flow

Identifieur interne : 000158 ( Main/Exploration ); précédent : 000157; suivant : 000159

Structure and morphology of linear polyethylene extrudates induced by elongational flow

Auteurs : Frantisek Rybnikar [République tchèque] ; Martina Kaszonyiova [République tchèque] ; Roman Cermak [République tchèque] ; Veronika Habrova [République tchèque] ; Martin Obadal [Autriche]

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Abstract

This study focuses on the structure, morphology, and properties of linear polyethylene (PE) profiles manufactured by continuous extrusion. High level of chain orientation was achieved using specific flow and processing conditions. An extrusion die with semihyperbolic convergency was used to generate high percentage of elongational flow and chain extension. Simultaneously, high extrusion pressure and relatively low melt temperature led to flow‐induced crystallization of PE extended chains. The structure of PE tapes consists of crystal aggregates with different level of orientation and crystallinity. © 2012 Wiley Periodicals, Inc. J. Appl. Polym. Sci., 2013


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DOI: 10.1002/app.38323


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