. 2023 Mar 22;15(6):1581. doi: 10.3390/polym15061581

Table 7.

Chemical modifications to PET2 after fermentation with T. atroviride and C. cladosporioides using FTIR analysis.

Wavelength in cm⁻¹	T. atroviride CBMAI 2073	C. cladosporioides CBMAI 2075
3000–2500	Increased absorption intensity with the disappearance of bands between 2980 cm⁻¹ and 2953 cm⁻¹	No changes
2500–2000	No changes	No changes
2000–1500	Disappearance of bands at 1764 cm⁻¹ and 1666 cm⁻¹, intensity reduction in band at 1579 cm⁻¹, and increase in absorption intensity of bands at 1502 cm⁻¹ and 1500 cm⁻¹	Increased absorption intensity of the bands at 1579 cm⁻¹, 1573 cm⁻¹, 1510 cm⁻¹, and 1508 cm⁻¹
1500–1000	Disappearance of bands at 1481 cm⁻¹ and 1008 cm⁻¹ Intensity reduction in the band at 1427 cm⁻¹	No changes
1000–500	Disappearance of bands at 983 cm⁻¹, 962 cm⁻¹, 835 cm⁻¹, and 507 cm⁻¹	Intensity reduction in bands at 860 cm⁻¹ and increased absorption intensity of the band at 740 cm⁻¹
500–400	Disappearance of bands at 499 cm⁻¹, 437 cm⁻¹, and 428 cm⁻¹	Disappearance of band at 437 cm⁻¹