A simple method for determining the linear birefringence of the thin layers based on the determination of the orientation of the polarization ellipse of totally polarized light is proposed and it is applied to PVA thin foils. Theoretical notions and the experimental procedure are described. The linear birefringence of polymer thin foils with different degrees of stretching is determined and the applicability of the method is discussed.
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| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8914837 | PMC |
| http://dx.doi.org/10.3390/polym14051063 | DOI Listing |
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