The result indicated that the haze degree of the PVA film decreasedabout 15% and 12% than PE film and EVA film; PVA film transmittance of IR was more or less than other films in the 714 渭m wavelength range so that the temperature of greenhouse could be increased effectively in daylight....
The determination of optical bandgap in these films has been presented by us earlier, for both undoped [1] and UV irradiated Fe:PVA [2]. In this paper, we present the results of our XRD and ATR-FTIR investigations on Fe:PVA. XRD spectra were recorded using the facility at Department of...
Investigation of fluoride removal mechanisms through (A) HATR-FTIR absorbance spectra for Guinea bauxite (2 g/L dose) with an initial fluoride loading of 0, 100 × 4 (replaced every hour for 4 h), and 500 ppm F− (loaded once), respectively, (B) Study on effect of ionic strength ...
FT-IR and FT-Raman spectra of the biomolecule 5-aminouracil were recorded in the regions 400–4000 cm 1 and 10–3500 cm 1, respectively. The observed vibra... MA Palafox,G Tardajos,A Guerrero-Martínez,... - 《Chemical Physics》 被引量: 177发表: 2007年 Real-time FTIR spectroscopy as...
Addition of GdF3 to PVA showed an increase in Tg. A comparison of FTIR spectra of pure PVA with PVA complexed films showed several changes in band position along with disappearance of some bands and appearance of new bands. Band position changes at -OH group were dramatic, which indicated ...
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 ...
Glass transition temperature (Tg) of PVA was found to be 88 掳C. Addition of GdF3 to PVA showed an increase in Tg. A comparison of FTIR spectra of pure PVA with PVA complexed films showed several changes in band position along with disappearance of some bands and appearance of new bands...
FTIR spectra showed major vibration bands associated with PVA and GA chemical groups, and BSA protein amides. Regarding to SAXS characterization, the slope of the log I(q), scattering intensity, as a function of log q, the scattering vector, provided important information about the morphology of...
Ultraviolet induced crosslink- ing of poly(vinyl alcohol) evaluated by principal component anal- ysis of FTIR spectra. Polym Int 2001;50:1068-1072.MIRANDA, T. M. R.; Goncalves, A. R.; Pessoa Amorim, M. T. Ultraviolet-induced crosslinking of poly (vinyl alcohol) evaluated by principal ...
Temperature-dependent FTIR spectra of PVA-RGO composite films were recorded to obtain the glass transition temperature (T-g) and to study its molecular origin. From these spectra the values of T-g were obtained using two-dimensional (2D) mapping of the first derivative of the absorbance ...