The surface IR absorption characteristics of MBS impact modified and unmodified PVC specimens prepared in various ways were determined by ATR-FTIR techniques. These specimens include compression molded plaques and blow molded bottles. In addition and as a reference point, the IR spectrum of a ...
S1. The grafted PDMA chains were confirmed by FTIR spectroscopy (Fig. 2a). The peaks in the spectrum of PVC-g-PDMA at 1732 cm−1 and 1152 cm−1 correspond to C=O stretching vibration and C―N stretching vibration, respectively. In 1H NMR spectrum of PVC-g-PDMA (Fig. 1b),...
3.1.1. FTIR test and XRD FTIR analysis of pristine and modified membranes with SiO2-SDS NPs are presented in Fig. 4. The FTIR spectrum of PSS-0 exhibits several bands characteristic of C–Cl, C–H, CC and O–H groups. As observed from Fig. 4, the characteristic bands of pristine PV...
FTIR data showed that the PEA-g-PVC displayed new absorption peaks, indicating the introduction of the EA ester group on PVC. A significant difference between the spectrum of the PVC and PEA-g-PVC in the peak of chlorine and carbon was observed by using EDX analysis. The EA grafting onto...
The intensity of the DEHP peaks is at maximum on the surface (d = 0 μm) and decreases gradually through the film thickness, becoming undetectable above 40 μm. Conversely, the intensity of the polymer spectrum decreases slightly, due to the effect of the attenuation by the medium, but ...
Xiu et al. (2024) used FTIR measurements of the char to postulate that the –OH bonds are removed at elevated temperatures, particularly those above the critical point of water. This finding certainly aligns with that of Čolnik et al. (2022) in that supercritical conditions led to ...
The irradiation of PVC films with UV light of wavelength, λ = 313 nm led to a clear change in the FTIR spectrum, as shown in Fig. 1. Appearance of bands in 1772 cm−1 and 1724 cm−1, were attributed to the formation of carbonyl groups related to chloroketone and to aliphatic ...
3. The spectrum for GO shows two peaks at 3424 cm−1 and 1385 cm−1 that attributed to the O-H group stretching vibrations of carboxylic acid and hydroxyl [63]. The presence of two absorption peaks noticed in the medium frequency area at 1702 cm−1 and 1626 cm−1, ...
FTIR spectra were recorded on a PerkinElmer Spectrum 2000 FTIR spectrometer (Norwalk, CT, USA) equipped with a single reflection attenuated total reflectance (ATR) accessory (golden gate) from Graseby Specac (Kent, UK). All FTIR spectra were obtained as a means of 5 samples and 16 individual ...
XRD spectrum of PVC (Figure S1) exhibits clear Bragg diffraction peaks that confirm the predominantly crystalline character of the sample. Our previous research also found a somewhat unexpected result for the poly- mer [25]. The technological procedure of polymer synthesis should be held responsible...