Effect of N-acylation on structure and properties of chitosan fibers

Physicochemical characterization of chitosan extracted from Metapenaeus stebbingi shells

“…The studies in the literature about FTIR spectroscopy related with chitosan show some characteristic peaks, which are at 2940 cm À1 (-CH 3 , -CH 2 ), 1655 cm À1 (C@O stretch vibration of secondary amide I band), 1555 cm À1 (N-H bending vibration of amide II band), 1570 cm À1 (N-H bending vibration of primary amides) and 1070 cm À1 (C-O stretching) (Choi, Kim, Pak, Yoo, & Chung, 2007;Lee, Hong, Kajiuchi, & Yang, 2005).…”

Triethyl orthoformate mediated a novel crosslinking method for the preparation of hydrogels for tissue engineering applications: characterization and in vitro cytocompatibility analysis

“…The amide III band is appearing at 1322 cm − 1 [26,35]. The peaks at 1151 cm − 1 and 1088 cm − 1 are due to C-O and C-O-C stretching frequencies respectively [35,44,45]. CS saccharide ring stretching is observed at 895 cm − 1 [46][47][48].…”

Biotinylated N-palmitoyl chitosan for design of drug loaded self-assembled nanocarriers

“…can be attributed to the water evaporation, physically adsorbed or absorbed in the inner polymeric network (Choi et al, 2007) TG/DTG curves of biotin exhibited three weight loss steps with temperature ( Figure 2B and Table 1). In the first step (335 o C) occurred the water evaporation simultaneous with carbon dioxide formation (see also Figure 4A); the second event with a weight loss of 27.97 % (367 o C) could be correlated with the degradation of functional groups (hydroxyl, carboxyl, carbonyl) and chemical bonds of N, O, H and S atoms that determined the formation of various gases (e.g.…”