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Structure and properties of high‐speed spun fibers of nylon 6
Author(s) -
Murase Shigemitsu,
Kashima Masaru,
Kudo Kazushige,
Hirami Matsuo
Publication year - 1997
Publication title -
macromolecular chemistry and physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.57
H-Index - 112
eISSN - 1521-3935
pISSN - 1022-1352
DOI - 10.1002/macp.1997.021980228
Subject(s) - modulus , tenacity (mineralogy) , crystal structure , materials science , composite material , crystal (programming language) , young's modulus , nylon 6 , nylon 66 , crystallography , chemistry , polymer , polyamide , computer science , programming language
Structure and properties of high‐speed spun fibers of nylon 6 were studied in the range of take‐up speeds from 5 to 12 km/min. With increasing take‐up speed, Young's modulus increased uniformly, while tenacity passed through a maximum at 8 km/min. WAXD data demonstrated the increase in the perfectness of the crystalline state with increasing take‐up speed. First, the γ‐form crystal structure predominated up to 9 km/min along with increase in its crystal size; second, in the range of 9 to 12 km/min, the a ‐form crystal structure appeared and developed as reflected by the increase in its crystal perfection. The structure‐properties relationships are discussed, and it is indicated that the increasing tendency of Young's modulus over 9 km/min can be attributed to the development of the a ‐form crystals.