Fourier transform infrared reflection coating

Fourier transform infrared reflection-absorption spectroscopy (FT-IFRAS) is applied to the study of corrosion protection of copper by an organic coating. Poly-N-vinyliroidazole (PVI(D) and poly-4(5)-vinylimidazole (PVI(4)) are demonstrated to be effective new polymeric anti-corrosion agents for copper at elevated temperatures. Oxidation of copper is suppressed even at 400° C. PVI(1) and PVI(4) are more effective anti-oxidants than the most commonly used corrosion inhibitors, benzotriazole and undecyllmldazole, at elevated temperatures. These new polymeric agents are water soluble and easy to treat the metal surface. [Pg.268]

Always based on the use of IR spectrophotometry, a novel attenuated total reflection-Fourier-transform infrared (ATR-FTIR) sensor [42] was proposed for the on-line monitoring of a dechlorination process. Organohalogenated compounds such as trichloroethylene (TCE), tetrachloroethylene (PCE) and carbon tetrachloride (CT) were detected with a limit of a few milligrams per litre, after extraction on the ATR internal-reflection element coated with a hydro-phobic polymer. As for all IR techniques, partial least squares (PLS) calibration models are needed. As previously, this system is promising for bioprocess control and optimization. [Pg.261]

Fourier transform Infrared spectroscopy has been shown to be an excellent tool for surface and Interface studies (.2), In this paper, the application of reflection/absorption Fourier transform Infrared spectroscopy (FTIR-RA) for studying the degradation of amine-cured epoxy and polybutadiene coatings on cold-rolled steel after exposure to a warm, humid environment is reported. [Pg.101]

Several reviewers of this chapter have stressed that the model proposed in Figure 18 is speculative. It is, in the sense that there are so many variables in a coating formulation that no mechanism will be universal (i.e., this mechanism is not being proposed for vinyl-acrylic HEC-stabilized latices). The carboxylate cation ion-dipole interaction with the oxygen atoms of the oxyethylene units is not speculative. Numerous publications other than the one ATR-FTIR (attenuated total reflectance-Fourier transform infrared)... [Pg.519]

San Francisco, Ca. 3rd-6th Nov.1996, p.521-33. 6A1 ATTENUATED TOTAL REFLECTION FOURIER TRANSFORM INFRARED SPECTROSCOPY (ATR FTIR) USEFUL TOOL FOR MOLECULAR ANALYSIS OF ADHESIVES, SEALANTS AND COATINGS Ishida H... [Pg.89]

The experimental setup applied is shown in Fig. 1. The experiments were performed in a 480 L Teflon-coated evacuable reaction chamber as shown by Fig. 1. The chamber is equipped with multiple reflection mirror systems for on-line Fourier Transform Infrared Spectroscopy (FlIR) and on-line Tunable Diode Laser Spectroscopy (TDL) as well as UVA IS spectroscopy. In addition, samples can be taken from the chamber and analysed by GC or by GC-MS. [Pg.114]

Commonly used spectroscopic or analytical techniques for characterizing surfaces and coating layers on porous silicon are Fourier transform infrared spectroscopy (FTIR), X-ray photoelectron spectroscopy (XPS), Auger electron spectroscopy, energy dispersive X-ray spectrometry, fluorescence spectroscopy, UV-Vis absorption/reflectance spectroscopy, thin film optical interference spectroscopy, impedance spectroscopy, optical microscopy, scanning electron microscopy, transmission electron microscopy, atomic force microscopy, ellipsometry, nitrogen adsorption/desorp-tion analysis, and water contact angle. [Pg.203]

An investigation was carried out into the fire retardant behaviour of zinc hydroxystannate-coated fillers (alumina trihydrate and magnesium hydroxide) in PVC and EVA cable formulations. Measurements were made of the limiting oxygen index, peak rate of heat release and smoke parameter and the data for unfilled and filled formulations compared. X-ray photoelectron spectroscopy and diffuse reflectance infrared Fourier-transform spectroscopy were used to study the filler-coating interaction. 16 refs. [Pg.44]

For some sample types, for example a coated substrate, it is not possible to collect an infrared transmission spectrum, whereas in some cases (e.g. when there are concerns over the effects of sample preparation) it may be more desirable to collect a reflected spectrum. The most popular reflection techniques nowadays are internal reflection spectroscopy (IRS) and diffuse reflectance infrared Fourier transform spectroscopy (DRIFTS)... [Pg.292]