a Fourier-transform infrared spectrometer (FTIR), or a GC/MS are nowadays standard techniques for identifying gases released during a TGA measurement. The disadvantage of the TGA-FTIR coupling (analogous to the TGA-MS coupling) is that IR spectra of decomposition gases simultaneously...
Results from this work provide a more thorough understanding of stereochemical effects on vibrational spectra, which will be very useful in the interpretation of ongoing IR linear dichroism studies of newly available semi-syndiotactic (semi-sPP) materials....
Specifically, we observed a strong Si signal in EDS and its corresponding map that showed that the cotton fabrics was coated with Si, the presence of Si-O and Si-C bonds in the ATR-FTIR spectra that are characteristic bands of PDMS, and characteristic PDMS signals of Si, C, and O in ...
The Raman spectra of the pure PP and the PP/TiN nanocomposites are visible in Figure 4A. The following Table 1 presents the relevant Raman peaks from the pure PP sample, which are supported by literature. As presented in Figure 4B, there are clear differences from PP Pure. Particularly, the...
It should also be emphasized that the IR spectrum of the polymer treated with a raised concentration of HNO3 highlighted a peak attributable to functional groups of the R-O-R type (see IR spectra in Figure 7). This means that nitric acid, in high concentrations, has the ability to degrade...
A possible interpretation of these data can be related to the fact that the lower availability of oxygen requires that a large number of radicals close with double bonds. 3.3. Mechanical Properties The dimensionless values of the tensile strength, 𝑇𝑆 TS¯, and elongation at break, 𝐸...
Fourier transform-infrared (FT-IR) spectra were recorded on a Nicolet iS50 Fourier transform spectrophotometer (Thermo Fisher Scientific, Waltham, MA, USA) equipped with a diamond ATR unit with a resolution of 0.09 cm−1. Thermogravimetry (TG) was performed using a NETZSCH 209 F1 Libra ...
The FTIR spectra of the SCAB-Znst composite nucleating agent are shown in Figure 1. The characteristic absorption peaks at 3367 cm−1 and 1605 cm−1 are -NH2 and C=O of the SACB, respectively. The peaks of the C=C bond of the benzene ring in SCAB presented at 1525 cm−1 and...
The effect of contamination of polypropylene (PP) with selected polymers is studied to simulate the effect of mis-sorting in recycling streams. Polystyrene (PS), polyethylene terephthalate (PET), polycarbonate (PC), acrylonitrile butadiene styrene (ABS),
Specific attention was paid to quantification and interpretation of the measured data by using four different constitutive equations allowing manual-adjustment-free determination of their parameters as well as quantification/characterization of molecular changes during thermal degradation of branched PP. 2. ...