Fourier component hydrogen bond

The chemical polymerization of Py by CAN in PU solutions leads to the formation of PU/PPy composites. The composites were characterized by Fourier transform infrared spectrophotometry-attenuated total reflectance (FTIR-ATR], dynamic mechanical analysis (DMA], thermal gravimetric analysis (TGA], differential scanning calorimetry (DSC], X-ray photoelectron spectroscopy (XPS], and SEM measurements. The absorbances of the disordered H-bonded urethane carbonyl decrease with increasing Py concentration. The fraction of the hydrogen-bonded carbonyls is increased and the melting point increases with the increase of PPy content. These indicate the incorporation of PPy into PU may cause the complex due to the intermolecular interaction between the PPy and PU. SEM images of composite nanofibers show good distribution of the second component and the composite solution is proper to form conductive composite nanofibers. 

Fourier deconvolution and component fitting. When the salt concentration increases, the practical disappearance of the component located in the spectrum of the mixed solvent at 3635 cm assigned to nearly free (non-hydrogen-bonded) OH oscillators, is observed. This effect is more evident in alcohol-rich samples (CH3OH mole fraction = 0.35). As in other systems [37,163,164], the component located at 3225 cm generally attributed to... 

Gas chromatography, using bonded-phase, fused-silica capillary columns, is the most commonly employed procedure for the separation of minor and trace hydrocarbon components. A variety of detectors are used the most common is flame ionization for generic quantitation, magnetic sector, and quadrupole MS and MS/MS for biomarker compounds (43), element-specific detectors for het-eroatomic and metallocompounds (44), and high-resolution MS for measurement of carbon (45) and hydrogen (46) isotopic ratios. Ultra-high-resolution Fourier transform MS (FTMS) coupled with soft-ionization techniques offers the opportunity to detect trace petroleum components without prior enrichment (47). 

---