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The characterization of nylon 6 filaments by x‐ray diffraction
Author(s) -
Stepaniak R. F.,
Garton A.,
Carlsson D. J.,
Wiles D. M.
Publication year - 1979
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.1979.070230615
Subject(s) - crystallinity , protein filament , diffraction , materials science , nylon 6 , characterization (materials science) , crystallography , fiber , composite material , x ray crystallography , synthetic fiber , microstructure , fiber diffraction , phase (matter) , optics , polymer , chemistry , physics , nanotechnology , organic chemistry
A method is described for calculating crystallinity indices and crystalline orientation functions for the α and γ components of the crystalline phase of nylon 6 filaments using wide‐angle x‐ray diffraction (WAXS) analysis. The method is shown to be applicable to a wide range of filament samples (“conventional” as‐spun, fast spun, drawn, and annealed) even when only a single broad diffraction maximum is observable from the WAXS photograph. The component indices can be used to illustrate differences present in the filament microstructure which would be unobservable if a total crystallinity index, such as that determined by density, were determined alone. For example, the initially mixed α–γ structure is retained in low‐temperature drawing (75–150°C) of nylon 6 fiber, but the predominantly α form is produced at higher draw temperatures.