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Real-time Monitoring of Polymerisations in Emulsions by Raman Spectroscopy - Modelling and Chemometrics
Real-time monitoring of polymerization reactions.
Raman spectra, in conjunction with Multivariate (Chemometric) Analysis, have been demonstrated to provide real-time information on the progress of a polymerisation reaction. As shown by this example, these results can provide unexpected information on the details of the reaction. in this case, the inequivalent reaction rates of the two monomers. Such information ultimately enables the process engineer to optimise his process.
What’s Protecting Your Mobile Screen? A Depth Profile of Polymer Protection Covers Using Raman and UFS-GDOES
Figure (a) UFS-RF-GDOES depth profile of the PMSPC; (b) zoom on the first 80 s of the analysis.
Pulsed RF Glow Discharge Optical Emission Spectrometry, coupled with the Ultra Fast Sputtering system, offers the Ultra Fast Elemental Depth Profiling of plastic thin films Polymer Mobile Screen Protection Covers. By coupling this technique with the Raman spectroscopy z-Scan analysis it is possible to acquire important information concerning the fabrication of smartphone screen protectors.
Spectroscopic Analysis of Red Wines with Aqualog
Spectroscopic Analysis of Red Wines with Aqualog
HORIBA’s Aqualog is uniquely equipped with patented simultaneous Absorbance spectral and fluorescence excitation-emission matrix (EEM) technology which provides rapid access to a wide range of parameters important to commercial wine processing and quality characterization.
Do You Know What is Protecting Your Telephone Screen
Optimization and follow up of manufacturing process of plastics films by Pulsed RF GDOES
Optimization and follow up of manufacturing process of plastics films are easily achieved using Pulsed RF Glow Discharge Optical Emission Spectrometry. This technique allows the fast detection of defects and presence of contaminants. The GD Profiler 2 can be a key instrument during the optimization and follow up of manufacturing process. Indeed, GDOES is a fast technique which allows the easy comparison of different materials, the detection of defects and the presence of contaminants. Moreover, combined with the «UFS» system, it proves to be a flexible technique for organic and hybrid materials opening numerous new applications domain.
Depth Profile Analysis of Organic and Organic/Inorganic Multilayered Materials by Pulsed RF GDOES
A GDOES depth profile on a multilayered polymer.
Examples of application of pulsed RF GDOES to the analysis of polymer layers and organic/inorganic films have been show illustrating the possibilities of the technique. Thanks to the use of pulsed RF source and UFS, GDOES takes its role in the multidimensional characterization of advanced multilayered organic materials where its specific strong points (speed, ease of use, large observation zone, measurement of all elements) are of great interest.
Using Chemometrics and Raman Spectra for Quantitative Predictions of Physical and Chemical Properties of Polymers
Concentration profiles of the different constituants.
As far as polymeric fibres are concerned, slight modifications of Raman features are directly related to differences in the molecular orientation and the degree of crystallinity of the fibres. To utilize these subtle spectral changes and correlate them with physical properties of the polymer, one is obliged to use Chemometrics on the Raman spectra. The resulting synergism between Raman spectroscopy and Chemometrics will provide a powerful tool for monitoring and control of manufacturing of polymeric materials.
Transmission Raman Spectroscopy: Review of Applications
Transmission Raman Spectroscopy: Review of Applications
The transmission design has demonstrated to be the technique of choice whenever Raman spectral information of a bulk material is required. It has already proven its utility for pharmaceutical applications, as tablets or even powder mixtures are good candidates for this measurement mode. However, transmission Raman might be applied successfully to other sample types, such as polymers, bio-tissues or any translucent material, and can be envisaged for evaluating the content of product inside a package. In addition, as TRS provides a global spectral information of the measured sample, it will be a technique of choice when quantitative evaluation of mixtures is needed.
Raman Imaging of Holographic Gratings Inscribed on Polymer Thin Films
Using holographic techniques we have structured the surface in a one step procedure (no wet nor photocuring processing ) along the X and Y directions. A grating is first inscribed with grooves along the X direction, the sample is rotated by 90° and a second grating is inscribed with grooves along the Y direction. The intensity of the 1st diffracted orders is monitored to have equal intensities in both X and Y directions.
Raman Characterization of Polymers in Industrial Applications
Raman Characterization of Polymers in Industrial Applications
Recent developments in Raman instrumentation have made the technique easier to use, more compact, and more affordable. Consequently, all of the demonstrated potential of the spectroscopy for industrial uses can now be exploited, including its use in combination with statistical methods for concentration calibrations.
Localisation of Polymeric Phases by Raman Microscopy Mapping Components of a Blend in a Plane and Depth Profiles of Laminated Film
Chemical Mapping of Phases.
Blending, an alternative method for engineering products that combines the properties of polymer types is a physical mixing. It has the advantage of being not only simple and inexpensive, but also allows for re-cycling used material. Incompatibility or non-miscibility of the differing chemical components is often an issue in the final performance of the polymer product. The first part of this note concerns the dispersion of the two components in a polyethylene-polybutylene terephthalate blend. The chemical imaging capabilities of the LabRAM are used to get this information. The second part deals with the depth analysis of laminated films made of different polymer layers.
Concentration Profile Measurements in Polymeric Coatings During Drying by Means of Inverse-Micro-Raman-Spectroscopy
The Raman spectra in different layers of a solvent borne polymer coating during drying
The coupling of the power of confocal Raman microscopy to the inverted sampling geometry has enabled detailed investigations to be made of solvent and water based coating systems, providing important information on the processes and chemistry that occurs at the coating interface and within.
EPA Stage 2 Disinfection Compliance with Aqualog
This application note describes the use of the Aqualog for monitoring regulated Dissolved Organic Matter (DOM) and disinfection by-product issues for drinking water treatment.
Characterizing Galvanizing Bath with Fluorescence
Automobile-parts production can be paralyzed by a defective electrongalvanizing (EV) bath line.

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