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Study of the change in morphological structure of UHM yarns on storage by the polarization interferometry method
Summary
Researchers used polarization interferometry to study how storing ultra-high-modulus polymer yarns affects their internal structure, finding that storage in air increases both tensile strength and light-bending properties near the yarn surface. This study concerns polymer fiber materials science rather than environmental microplastic pollution.
Dependences of birefringence of the radial coordinate have been obtained for “old” and relatively fresh UHM yarns using the polarizing interference microscope. Storage of UHM yarns in air leads to increased strength and elongation at break in microplastics and correspondingly to an increase in the birefringence close to the yarn surface and on it.