FTIR probe, fiber

MA Thomson, PJ MeUing, and AM Slepski. Real Time Monitoring of Isocyanate Chemistry Using a Fiber-Optic FTIR Probe. Polymer Preprints 42 310-311, 2001. 

Two ATR-FTIR probes (Metder Toledo DiComp immersion probe connected via a flexible silver halogenide fiber to a ReactIR 45 m spectrometer) can be inserted into the reaction cell via Swagelok connections. One of these ports can also be used for sampling and separate analysis of the reaction mixture. The stainless steel container can be heated to 250 °C, with heat transferred via the polyetheretherketone (PEEK) insert to the liquid. X-rays can enter and exit the reaction mixture through a... 

Real-Time Monitoring of Isocyanate Chemistry using a Fiber-Optic FTIR Probe... 

There are many examples of second-order analyzers that are used in analytical chemistry including many hyphenated spectroscopic tools such as FTIR-TGA, IR-microscopy, as well as GC-MS, or even two-dimensional spectroscopic techniques. Another hyphenated technique that is being developed for the study of solid-state transitions in crystalline materials is dynamic vapor sorption coupled with NIR spectroscopy (DVS-NIR).26 DVS is a water sorption balance by which the weight of a sample is carefully monitored during exposure to defined temperature and humidity. It can be used to study the stability of materials, and in this case has been used to induce solid-state transitions in anhydrous theophylline. By interfacing an NIR spectrometer with a fiber-optic probe to the DVS, the transitions of the theophylline can be monitored spectroscopically. The DVS-NIR has proven to be a useful tool in the study of the solid-state transitions of theophylline. It has been used to identify a transition that exists in the conversion of the anhydrous form to the hydrate during the course of water sorption. 

L. F. De La Torre-Quintana, S. P. Hemandez-Rivera, Characterization of thermal inkjet technology TNT deposits by fiber optic-grazing angle probe FTIR spectroscopy. Sensors, and Command, Control, Communications, and Intelhgence (C3I) Technologies for Homeland Security and Homeland Defense IV Edward M. Carapezza Ed., Proc. SPIE, 5778, 543-552 (2005). 

The use of coupled onhne spectroscopies (ATR-FTIR/Raman) for the development and the monitoring of industrial chemical processes was demonstrated by Wiss and ZiUan [14], For the investigation of two types of reaction, respective fiber optical spectroscopic probes were installed in a commercial reaction calorimeter. The authors pointed out that such a setup is more appropriate for industrial applications than bypass systems for sampling, and can be used in a pilot plant or production plant without major modification of the available equipment. 

R. S. Williams, on-Site, Nondestructive Mid-IR Spectroscopy of Plastics in Museum Objects using a Portable FTIR Spectrometer with Fiber Optic Probe, Mat. Res. Soc. Symp. Proc., 462, 25-30 (1997). 

Miscanthus, a high yield, fast growing perennial grass with low mineral content, was put under a microscope to explore its potential as a source of natural and environmentally friendly fibers and polymers for composite manufacturing. The manipulation of miscanthus structural and thermal properties at 25°C < T < 550°C, as probed by SEM, DSC, TGA, and in situ diffuse reflectance-FTIR, suggested that composites with flexural strength as high as 65 MPa could be formulated without the addition of external polymers. 

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