Facile preparation of magnetite–cellulose nanocomposite from a sustainable resource

A robust epoxy nanocomposite with iron oxide decorated cellulose nanofiber as a sustained drug delivery vehicle for antibacterial drugs

“…It can be seen from the figure (spectrum (i)) that the characteristic peaks of CNFs appear at 3400 cm −1 corresponding to the –O–H stretching vibration, at 2900–2800 cm −1 for the –C–H stretching vibrations, and at 1645 cm −1 for the –O–H bending vibration of absorbed water in CNFs. 21,29 Similarly, peaks at 1443 cm −1 , 1322 cm −1 , and 1047 cm −1 were ascribed to the –C–O–H stretching, –CH 2 wagging, and –C–O–C– stretching vibrations of the pyranose ring, respectively, which also appeared in the CNFs spectrum. 29 All these peaks were detected in the spectrum of the IONP@CNFs nanohybrid (spectrum (ii) in Fig.…”

“…However, the characteristic peak for the Fe–O bond that normally appears at around 630–550 cm −1 was absent due to overlapping with other bands. 28,29 On recording the FTIR of the bare IONPs (spectrum (iii)), a small peak appeared at 618 cm −1 that corresponded to Fe–O stretching. On further treatment at a high temperature (250 °C for 3 h) of the IONPs, this peak appeared more intense as shown in the spectrum (iv) of Fig.…”

“…for the -O-H bending vibration of absorbed water in CNFs. 21,29 Similarly, peaks at 1443 cm À1 , 1322 cm À1 , and 1047 cm À1 were ascribed to the -C-O-H stretching, -CH 2 wagging, and -C-O-C-stretching vibrations of the pyranose ring, respectively, which also appeared in the CNFs spectrum. 29 All these peaks were detected in the spectrum of the IONP@CNFs nanohybrid (spectrum (ii) in Fig.…”

“…However, the characteristic peak for the Fe-O bond that normally appears at around 630-550 cm À1 was absent due to overlapping with other bands. 28,29 Fig. 1 On recording the FTIR of the bare IONPs (spectrum (iii)), a small peak appeared at 618 cm À1 that corresponded to Fe-O stretching.…”