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Dynamics and evolution of structure in fiber extrusion
Author(s) -
Shimizu Jiro,
Kikutani Takeshi
Publication year - 2001
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.2257
Subject(s) - necking , spinning , materials science , melt spinning , deformation (meteorology) , extrusion , composite material , fiber , crystallization , polyamide , synthetic fiber , thermodynamics , physics
This paper gives a review of scientific advances in the understanding of the mechanism of fiber structure development in the high‐speed melt spinning process. Research in this field has been active since the late 1970s. Particular attention is paid to the molecular orientation and orientation‐induced crystallization occurring in the high‐speed spinning process of poly(ethylene terephthalate), polyamides, and some other types of polymers. Characteristics of crystalline morphology developed in the spin line and evolution of structural variation in the cross‐section of the fiber are also discussed. On‐line measurement of the spin line revealed that fiber structure development is accompanied with neck‐like deformation. Detailed behavior of the neck‐like deformation such as diameter profile, necking temperature, and necking draw ratio are presented, and the relation between the neck‐like deformation and the structure development is also discussed. © 2002 Wiley Periodicals, Inc. J Appl Polym Sci 83: 539–558, 2002