Polymer paperCharacterization of biaxial orientation in poly(ethylene terephthalate) by means of refractive index measurements and Raman and infra-red spectroscopies
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Cited by (131)
Radial gradients in PET monofilaments: A Raman mapping and SAXS tomography study
2022, PolymerCitation Excerpt :The peak heights of these two bands can be used to determine PET crystallinities using equation (2). The Raman band at 1616 cm−1 (Fig. 3b) arises from the symmetric stretching of the 1,4-carbons of the benzene ring [27] and is reflecting the molecular orientation of polymer chains [27–30]. The 1729 cm−1 (Fig. 3c) Raman band arises from the CO stretching.
High-resolution 2D Raman mapping of mono- and bicomponent filament cross-sections
2021, PolymerCitation Excerpt :The peak height ratio I1616/I1120 is the smallest for the mono filament and is also rather small for the bico filament. The peak at 1616 cm−1 is assigned to the symmetric stretching of the 1,4-carbons of the benzene ring [52] and is reflecting the molecular orientation of polymer chains [43,52–54]. Since the incident light onto the sample is linearly polarized in the plane of the sample (fiber cross-section), only benzene rings that lie fully or partially in the plane of the fiber cross-section will contribute to the 1616 cm−1 Raman band.
Effect of Al<inf>2</inf>O<inf>3</inf>/Alucone nanolayered composite overcoating on reliability of Ag nanowire electrodes under bending fatigue
2020, Journal of Alloys and CompoundsCitation Excerpt :According to the Fresnel theory, optical transmittance is degraded by an overcoating layer with a refractive index between that of the substrate and that of air [37,38]. Thus, the degradation of transmittance by the overcoating layer can be attributed to the Al2O3 layer, which has a higher refractive index of ∼1.70 [39] compared to that of the PET substrate (∼1.57) [40]. However, the alucone layer has a smaller refractive index of ∼1.45 [30] compared to the PET substrate.
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Present address: H. H. Wills Physics Laboratory, University of Bristol, UK
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Present address: ICI Corporate Laboratory, Runcorn, Cheshire, UK