The role of octadecylamine as zirconium phosphate intercalating agent on poly(vinyl alcohol)/poly(N-vinyl-2-pyrrolidone) biodegradable systems

Mechanical, thermal, rheological assessment of polyamide-6 reinforced composites by addition of lamellar zirconium phosphate

“…The authors registered the presence of multiphase systems in that amine provided variable polymer molecular motion of PVAl and PVP phases. 16 Similar work was published where to same blend was filled with pristine lamellar zirconium phosphate. The authors reported that PVAl thermal properties were reduced and the reinforcing effect of ZrP.…”

Enhanced Antioxidant and Neuroprotective Properties of Pterostilbene (Resveratrol Derivative) in Amorphous Solid Dispersions

“…FTIR spectra of pure PVP K30/PVP VA64 ( Figure 5 a and Figure 5 b, red line, respectively) indicated peaks at 1167/- cm −1 (C–C=O) [ 92 ], 1229/1233 cm −1 (lactone structure) [ 93 ], 1285/1287 cm −1 (C–N stretching) [ 94 ], 1373/1369 cm −1 (–CH deformation modes from –CH 2 ) [ 87 ], 1420/1422 cm −1 (CH 2 wagging) [ 92 ], 1460/1460 cm −1 (CH 2 bending) [ 95 ], 1665/1670 cm −1 (C=O absorption peak from amide group) [ 94 ], -/1732 cm −1 (C=O stretching of vinyl acetate) [ 96 ], and 2800–3100 cm −1 (C–H stretching) [ 94 ].…”

Electrospun Nanofibers Loaded with Marigold Extract Based on PVP/HPβCD and PCL/PVP Scaffolds for Wound Healing Applications

“…The ATR-FTIR spectra of CF-CE, CF-UAE, HP-β-CD, PCL, PVP, and nanofibers N1-N4 were compiled to indicate potential interactions between individual components in the nanofibers (N1-N4) (Figure 4). The ATR-FTIR spectrum of HPβCD showed prominent absorption bands at 847 cm −1 (hydrogen bond formation between primary and secondary OH group and the presence of glucopyranose units), 948 cm −1 (presence of glucopyranose units), 1006 cm −1 (C-H and C-O stretching vibrations), 1082 cm −1 (stretching vibration of the C-C and C-O bonds, and wagging vibration of the C-H bonds), 1152 cm −1 (C-H and C-O stretching vibrations), 2915 cm −1 (C-H stretching of sp3 carbons), and 3350 cm −1 (O-H stretching vibrations) [38][39][40][41][42]. The ATR-FTIR spectrum of PVP showed prominent absorption bands at 1167 cm −1 (C-C=O), 1229 cm −1 (lactone structure), 1283 cm −1 (C-N stretching vibrations), 1371 cm −1 (-CH deformation vibrations), 1420 cm −1 (CH2 wagging), 1458 cm −1 (CH2 bending vibrations), 1665 cm −1 (C=O), and 2951 cm −1 (C-H stretching vibrations) [42][43][44][45].…”

“…The FTIR spectrum of PCL showed prominent absorption bands at 733 cm −1 (C-H out-of-plane bending vibration), 1167 cm −1 (-C-O-C-symmetric stretching), 1238 cm −1 (C-O-C asymmetric stretching), 1294 cm −1 (C-O and C-C bands), 1364 cm −1 (stretching of OH group), 1472 cm −1 (stretching of CH2 group), 1722 cm −1 (-C=O stretching vibrations of the ester carbonyl group), 2866 cm −1 (symmetric stretching of CH2 group), and 2945 cm −1 (asymmetric stretching of CH2 group) [46,47]. A detailed summary of the changes observed in the FTIR spectra for N1 and N3 is summarized in Table S3, while those for N2 and N4 are summarized in The ATR-FTIR spectrum of HPβCD showed prominent absorption bands at 847 cm −1 (hydrogen bond formation between primary and secondary OH group and the presence of glucopyranose units), 948 cm −1 (presence of glucopyranose units), 1006 cm −1 (C-H and C-O stretching vibrations), 1082 cm −1 (stretching vibration of the C-C and C-O bonds, and wagging vibration of the C-H bonds), 1152 cm −1 (C-H and C-O stretching vibrations), 2915 cm −1 (C-H stretching of sp3 carbons), and 3350 cm −1 (O-H stretching vibrations) [38][39][40][41][42]. The ATR-FTIR spectrum of PVP showed prominent absorption bands at 1167 cm −1 (C-C=O), 1229 cm −1 (lactone structure), 1283 cm −1 (C-N stretching vibrations), 1371 cm −1 (-CH deformation vibrations), 1420 cm −1 (CH 2 wagging), 1458 cm −1 (CH 2 bending vibrations), 1665 cm −1 (C=O), and 2951 cm −1 (C-H stretching vibrations) [42][43][44][45].…”