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Small angle and wide angle x‐ray pole figure studies on simultaneous biaxially stretched poly(ethylene terephthalate) (PET) films
Author(s) -
Cakmak Mukerrem,
Spruiell Joseph E.,
White James L.,
Lin J. S.
Publication year - 1987
Publication title -
polymer engineering and science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.503
H-Index - 111
eISSN - 1548-2634
pISSN - 0032-3888
DOI - 10.1002/pen.760271205
Subject(s) - materials science , poly ethylene , small angle x ray scattering , scattering , pole figure , ethylene , annealing (glass) , diffraction , contact angle , optics , beam (structure) , composite material , microstructure , physics , biochemistry , chemistry , catalysis
Biaxially oriented poly(ethylene terephthalate) (PET) films have been characterized by small angle and wide angle x‐ray scattering. The films were studied at various rotational angles to the impinging beam and orientations relative to axes in three directions in the film were obtained. Pole figures were developed for both the major small angle scattering peak and wide angle diffraction peaks. These are used to interpret structural changes in the films associated with various degrees of biaxial stretching and subsequent constrained annealing.