Abstract
A computer simulation program to calculate the ESR spectrum of peroxy radicals partially oriented in two directions was developed. The calculation was applied to rigid peroxy radicals, ∼CF2–CFOO·–CF2∼, trapped in crystalline regions of elongated polytetrafluoroethylene films with a stretch ratio 3.6. The degree of orientation was estimated as follows; fα=0.45±0.02 and fα′=0.10±0.02, where fα and fα′, are the degree of orientation of polymer chains in the stretching direction and the film plane, respectively.
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Shimada, S., Hori, Y. & Kashiwabara, H. An Electron Spin Resonance Method for Determination of Orientation to Two Directions in Polytetrafluoroethylene. Polym J 16, 539–546 (1984). https://doi.org/10.1295/polymj.16.539
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DOI: https://doi.org/10.1295/polymj.16.539