Figure 5 | Scientific Reports

Figure 5

From: Influence of spin finish on degradation, functionalization and long-term storage of polyethylene terephthalate fabrics dedicated to ligament prostheses

Figure 5

IR spectra of SFR-extracted PET fabrics (from 2018, 2009, and 1993) compared to virgin SF oil (non-degraded) and SF-Ext oil (degraded oil extracted from PET1993 fiber): (A) Overall spectra of spin-finish oil (virgin SF oil versus degraded, extracted oil from PET1993) and spin finish oil-removed PET fabrics, (B) regional spectra from A, shown from 2800 to 3100 cm−1, and (C) spectrum of virgin PET film as a reference for spectral changes from spin finish removal from PET ligaments (regional spectra from 2800 to 3100 cm−1).

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