Table 5. ATR spectrum of NAC, PLGA-NPs, and NAC-PLGA-NPs.
| Erbetta et al. (2012) | Gümüşderelioğlu & Deniz (1999) | This Study | |||||
|---|---|---|---|---|---|---|---|
| dl-lactide | Glycolide | PLA | PLGA NPs | NAC-PLGA-NPs | NAC | ||
| 3,000–2,700 | CH, CH3, CH2 (stretching) | 2,850 | 2,918 | 2,916; 2,847 | 2,920; 2,850 | ||
| 1,900–1,550 | C=O (stretch) | 1,760 | 1,750 | 1,750 | 1,761; 1,645; 1,537 | 1,762; 1,643; 1,543 | 1,692; 1,649; 1,535 |
| 1,500–1,250 | CH3, CH2 (symetric angular deformation) | 1,540; 1,430 | 1,450; 1,360 | 1,395 | 1,423; 1,395 | 1,471; 1,397 | |
| 1,350–1,150 | CH2, CH (asymetric angular deformation) (wagging) | 1,317 | 1,270 | 1,252 | |||
| 1,300–1,150 | C–O (ester stretch) | 1,275; 1,100 | 1,265; 1,050 | 1,130; 1,090 | 1,259; 1,017 | 1,270; 1,017 | 1,252; 1,018 |
| 750–940 | C–H (bending) | 940 | 750 | 750 | 767 | 750 | |