Skip to main content

Table 2 Selected FTIR absorption peaks for PLA [14,15,16,17,18,19,20,21,22,23,24] and paclitaxel [14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29]

From: Fabrication of polylactic acid/paclitaxel nano fibers by electrospinning for cancer therapeutics

Wavenumber (cm−1) Mode
PLA
616 COO–bend
806 COO–(out-of-plane)
973 C–N stretching
1022 –CH2 (out-of-plane)
1090 C–O stretching
1183 –C–O–C–
1224 –C–O–H–
1305 C–H (out-of-plane)
1339 C–H bending
1434 COO–symmetric stretching
1470 –CH2 bending
1601 COO–asymmetric stretching
1746 C=O stretching
2905 C–H stretching
2956 –CH2 symmetric stretching
3004 –CH2 asymmetric stretching
3568 OH (COOH)
3572 OH (COOH)
Paclitaxel
689 C–H out-of-plane/C–C=O deformation
803–941 C–H in-plane deformation
941–803 C–H in-plane deformation
1049–1090 C–O stretching
1112–1117 O–H in-plane bending in (COOH)
1274 C–N stretching
1330–1380 CH3 deformation
1369 CH/NH bend
1444 C=C ring stretching
1579–1652 C–C stretching
1640 N–H bending
1733 (C=O stretching) of amide group
1775 C=O
1777 C=O
2541–2973 CH3/C–H stretching
2860 CH
2909 CH stretch
3066 –CH sp3 stretching
3339 N–H/O–H stretching
3568 OH (COOH)
3572 OH (COOH)