Analysis of Coatings

Analysis of coatings is simplified if the coating can be removed from the paper in a water bath by ultrasonic cleaning. If fibers are not present, a carbohydrate deterrnination can be used to identify gums and other carbohydrate polymers in the coating. 

Statistical Analysis of Coatings Degradation by Time-Series Methods... 

T. Alfredson and J. Tschida, High Performance Size Exclusion Analysis of Coatings and Adhesive Polymer Formulations, Publ. No. LC-122, Varian Instrument Group, Walnut Creek, CA (n.d.). 

Applications Although GD-OES is most popular in metals research, it can also be applied to prepainted steel, coatings and polymers. Examples of analysis of coatings are ... 

The calculation of the cladding mode effective index can be accomplished by an extension of the model for doubly clad fibers28 or by following the transfer matrix method (TMM) proposed by Anemogiannis et al.26 and successively widely adopted for the analysis of coated LPGs29 30. 

M.D. Mowery, R. Sing, J. Kirsch, A. Razaghi, S. Bechard and R.A. Reed, Rapid at-line analysis of coating thickness and uniformity on tablets using laser induced breakdown spectroscopy, J. Pharm. Biomed. Anal, 28, 935-943 (2002). 

Drumm, C.A. and Ulicny, J.C. (1989). Analysis of coating on glass fiber reinforcements. Polym. Composites 10. 44-51. 

Figure 35.1 depicts the dependence of the deposition rate on the discharge parameter WjFM. The figure is essentially the same as Figure 8.3 and, if plotted using D.R./ FM, the same as Figure 8.4. Such a plot is necessary to identify the domain of LCVD, namely, the energy-deficient domain or monomer-deficient domain. Based on this figure, 2.6GJ/kg (energy-deficient domain) and 21.8GJ/kg (monomer-deficient domain) were selected for analysis of coating characteristics.

Merckle and Kovar reported an assay of effervescent tablets (intact and powdered) by NIRS in transmittance and reflectance modes. Results of quantitative determination of acetylsalicylic acid (ASA) and ASA in combination with ascorbic acid and/or paracetamol were comparable in both transmittance and reflectance modes. Corti and associates described a NIR transmittance analysis of coated tablets, using both whole and milled tablets. 

Fig. 2 Quasitemary diagrams of point analysis of coatings (a) and the bed samples taken on test days (b) 10, (c) 15, and (d) 21 from test 4.

Results published by Kirsch and Drennen in 1995 [87] suggest that valuable information about the tablet core can be obtained through the film coat, permitting nondestructive analysis of coated dosage forms for potency, hardness, and other parameters. Likewise, the NIR method provided an accurate measure of coating levels. 

Spectroscopic Methods in Research and Analysis of Coatings and Plastics... 

The above analysis of coating deposition methods visualizes that Cl impregnated in coating compositions requires specific technological operations. These technologies, equipment and methodology have rightfully occupied a place in rust protection means of metal ware. 

Modern coating materials are complex mixtures of binders, solvents, pigments, extenders, and additives. Most of these components consist of several constituents. Complete analysis of coating materials therefore requires comprehensive knowledge and the use of various analytical methods. 

The analysis of coating materials is often employed in the investigation of complaints and substandard batches, or to evaluate competing products. Analysis also plays an important role in the assessment of raw materials, occupational safety and hygiene, and the emission of solvents and decomposition products during paint curing. 

Following the recent improvements in capacity and advances toward higher voltage, electrolyte decomposition on the surface of cathodes has become evident (Fig. 3.3). Reports concerning the cathode/electrolyte interface were first published in 1985 by Goodenough from the University of Texas at Austin [29], and an analysis of coatings on cathodes was reported in 2001 by Wang from the City University of... 

In the analysis of coatings of dry paint film, the components can be characterized using microscopic techniques that can be applied to the study of the homogeneity of samples and require only small amounts of material. 

High-depth resolution in the analysis of coatings and thin films using GD-MS requires crater shapes (Figure 41.2) with a flat bottom and perpendicular walls [35]. Nevertheless, optimum operating conditions to obtain adequate crater shapes do not usually match the optimum conditions to obtain the maximum sensitivity, thus, a compromise must be used. 

Heparinization of CVCs and dialysis catheters resulted in a significant reduction of CR-Is, as seen in a randomized-controlled clinical trial of heparin-coated and uncoated nontunneled CVCs inserted in 246 patients and a retrospective comparative analysis of coated and uncoated tunneled dialysis catheters. ... 

Figure 12.1 A flowchart for the analysis of coatings and colorants. The small numbers refer to appropriate sections in previous chapters describing the techniques. 

S. R. Kim, J.A. Nairn, Fracture mechanics analysis of coating/substrate systems. Part E Analysis of tensile and bending tests, Eng. Fracture Mechanics, 65 (2000) 573 579... 

ToF-SIMS is a powerful tool to control the surface quality of industrial polymer products, as in the polymer coating industry [198,199]. Strengths of ToF-SIMS for analysis of coatings are overall sensitivity (lOx higher than XPS), molecular specificity, in situ analysis, mapping, analysis of mixtures. Each... 

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