2008年5月1日 · In this work, poly (vinyl alcohol) (PVA) hydrogels with different degree of hydrolysis (DH) were prepared by chemical crosslinking with glutaraldehyde (GA). The nanostructure of the resulting hydrogels was investigated by Fourier Transform Infrared Spectroscopy (FTIR) and Synchrotron small-angle X-ray scattering characterization (SAXS).

The FTIR spectrum of the keratin bioplastic is shown in Fig. 6 and FTIR for PVA from Ref. [20] and for glycerol from Ref. [21] can be seen in supplementary file. The spectrum shows...

2021年8月1日 · The chemical structure of PVA films was evaluated using the Nicolet-6700 Fourier transform infrared (FTIR) spectrophotometer from Thermo Scientific, taking averaged over 64 scans and at resolution of 4 cm −1.

Fourier Transform Infrared spectroscopy (FTIR) spectra of pure and silver nitrate doped PVA films were obtained and the results are shown in Figures 1-3. The spectra show a strong broad...

2012年9月29日 · Quantitative correlations between the intensity of the crystalline band at 1144 cm −1 (A 1144) normalized to the intensity of the C–O stretching band at 1094 cm −1 (A 1094) in IR spectra of PVA films and the degree of crystallinity (α) of these films measured by an x-ray diffraction method were investigated.

2021年12月1日 · This paper presents the interaction comparison of poly(vinyl) alcohol (PVA) with hydroxyapatite derived from Spanish Mackerel (SM) and Whitefin Wolf Herring (WWH) bones, in different processing method.

2023年5月2日 · The FTIR spectra of PVA/f-MWCNTS (Fig. 2c, d) preserve the same characteristic peaks of pristine PVA, however, a remarkable improve in peak intensities/broadening have been observed. Furthermore, when the PVA matrix is loaded with f-MWCNTS, the frequency of the (O-H), C-H in -CH 2 , and C-O …

2007年7月30日 · In order to investigate the structure in the nanometer-scale, PVA-derived hybrids were characterized by using small-angle X-ray scattering synchrotron radiation (SAXS). Fourier transform infrared spectroscopy (FTIR) was used to investigate PVA hybrids chemical functionalities and their interaction with bovine herpesviruses.

FTIR of the samples is shown in Fig. 1. The pure PVA showed main absorption peaks at 3412 cm −1 ( OH stretch- ing), 2862 cm −1 ( CH stretching), 1419 cm −1 ( CH bending) and 1093 cm −1 ( C O...

2004年9月29日 · FTIR was used to characterize the presence of specific chemical groups in the PVA/PEG hydrogels and hybrid networks, reflecting the effectiveness of the developed procedure for producing different nanostructured materials.