Two-dimensional heterospectral correlation analysis of wide-angle X-ray scattering and infrared spectroscopy for specific chemical interactions in weakly interacting block copolymers

Article Abstract:

Two dimensional correlation spectroscopy of infrared (IR) spectroscopy as well as 2 dimensional wide-angle X-ray scattering (WAXS)-IR heterospectral correlation spectroscopy is used to investigate in detail the phase behavior of polystyrene-block-poly(n-pentyl methacrylate) copolymers (PS-PnPMA). It is found that the synchronous 2D WAXS-IR heterospectral correlation spectrum of the ordered state is completely different from that in the two disordered states.

Plastics Material and Resin Manufacturing, Plastics materials and resins, Polystyrene, Styrene Resins, Polystyrene Resins NEC, Usage, Infrared spectroscopy, Block copolymers, Structure, Report

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Characterization of concentration-dependent infrared spectral variations of urea aqueous solutions by principal component analysis and two-dimensional correlation spectroscopy

Article Abstract:

By applying principal component analysis and two dimensional correlation spectroscopy to concentration dependent FTIR spectra of aqueous urea solutions, the association behavior of urea as a function of urea concentration was elucidated. In the PCA, the spectral changes with increasing urea concentrations could be reconstructed using two principal components.

Nitrogenous Fertilizer Manufacturing, Nitrogenous fertilizers, Urea, Spectra, Chemistry, Analytic, Analytical chemistry, Fourier transform infrared spectroscopy

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Electrochemistry of conductive polymers. 34. Two-dimensional correlation analysis of real-time spectroelectrochemical data for aniline polymerization

Article Abstract:

Electrochemical polymerization of aniline is studied using real-time spectrochemical experiments conducted concurrently with potentiodynamic scans in a nitric acid electrolyte with its pH adjusted to 0.50. Two-dimensional correlation spectral analysis and subsequent extraction of pure component spectra led to positive identification of intermediate species.

Cyclic crudes and intermediates, Cyclic Crude and Intermediate Manufacturing, Aniline, Polymers, Electric properties, Electrochemistry

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