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High‐Strength and High‐Toughness Melt‐Spun Polyethylene Fibers Derived from Composite Structure Formation
Author(s) -
Kakiage Masaki,
Takei Seito
Publication year - 2020
Publication title -
macromolecular materials and engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.913
H-Index - 96
eISSN - 1439-2054
pISSN - 1438-7492
DOI - 10.1002/mame.202000252
Subject(s) - materials science , high density polyethylene , composite material , toughness , polyethylene , ultimate tensile strength , composite number , fiber , melt spinning , spinning , izod impact strength test , synthetic fiber
High‐strength and high‐toughness polyethylene (PE) fibers are prepared by the melt‐spinning and subsequent drawing in the semimolten state of high‐density PE (HDPE) combined with ultrahigh‐molecular‐weight PE (UHMW‐PE). As‐spun fibers are prepared by the melt‐spinning of HDPE/UHMW‐PE blended powder with 0–30 wt% UHMW‐PE. The as‐spun fiber is drawn at 100 (solid state) and 130 °C (semimolten state). Well‐arranged stacked lamellae with highly oriented crystals are formed based on the difference in relaxation time for the drawn fiber with 30 wt% UHMW‐PE prepared at 130 °C in the semimolten state. This composite structure results in a PE fiber with high tensile strength (1.11 GPa) and high toughness (297 MJ m −3 ).