Structure and morphology of linear polyethylene extrudates induced by elongational flow

被引：4

作者：

Rybnikar, Frantisek ^{[1
]}

Kaszonyiova, Martina ^{[1
]}

Cermak, Roman ^{[2
]}

Habrova, Veronika ^{[3
]}

Obadal, Martin ^{[4
]}

机构：

[1] Tomas Bata Univ Zlin, Dept Prod Engn, Zlin, Czech Republic

[2] Tomas Bata Univ Zlin, Dept Polymer Engn, Zlin, Czech Republic

[3] Inst Polymer, Brno, Czech Republic

[4] Borealis Polyolefine GmbH, Linz, Austria

来源：

JOURNAL OF APPLIED POLYMER SCIENCE | 2013年 / 128卷 / 03期

关键词：

morphology; extrusion; crystallization; polyolefins; SELF-REINFORCED POLYETHYLENE; INDUCED CRYSTALLIZATION; EXTRUSION;

D O I：

10.1002/app.38323

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

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. (c) 2012 Wiley Periodicals, Inc. J. Appl. Polym. Sci., 2013

引用

页码：1665 / 1672

页数：8

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