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. 2017 Oct 12;9(10):503. doi: 10.3390/polym9100503

Figure 10.

Figure 10

FTIR spectra, recorded at room temperature, of the miscible PTyr-TPA/P4VP blends in the regions: (A) 1760–1570 cm−1 (amide I absorption); and (B) 1030–970 cm−1 (pyridine unit absorption).