Impregnated polymers

Aliquat 336 "Tc sensing in water using impregnated polymer containing both extractant and scintillating fluors Radiometric column sensor 95,97... 

Awangku Yusof, A. A. R., O Leary, S. V., and Mitchell, G. R. (1999). Temperature-tuned vector phase conjugation in azobenzene dye impregnated polymer films. Opt. Commun. 169, 333-340. 

Depending on the manufacturing method, fiber type and content, and properties of the impregnating polymer, various mechanisms lead to the formation of large dry areas, called dry spots, and air inclusions or microvoids in the final composite part made with thermosetting resins. Common causes for void formation in polymer composites include volatilization of... 

Several articles were published, arguing that HCO3 can be reduced at a Hg coated Cu electrode, Pd impregnated polymer electrodes, or metallic Pd electrodes. However, the partial current density of CO2 reduction was below 0.1 mA cm , or the data were not confirmed by quantitative chemical analysis. ... 

Radiation-induced crosslinking of acetylene impregnated polymers — Enhanced crosslinking and reduction in chain scission are found in the amorphous regions of polycrystalline polyesters, when they are irradiated in the presence of acetylene [7], Similar effects have been observed in the crosslinking of some biopolymers which are otherwise radiation degradable. 

Partap S, Hebb AK, Rehman I et al (2007) Formation of porous natural-synthetic polymer composites using emulsion templating and supercritical fluid assisted impregnation. Polym Bull 58 849-860... 

The oldest commercially used SCCO2 extraction process is the decaffeination of coffee beans. This is still the most profitable application of SCCO2, but supercritical fluids have been tested in the food industry, pharmaceutical industry, textile dyeing, impregnation, polymer synthesis and processing, dry cleaning, etc. ... 

Opals are synthesized commercially by allowing monosized SiOi spheres to slowly settle from a dispersion in the lab. Since the structure is quite open, it is easy to diffuse a dye into the matrix to change the overall color. We can produce inverse opals in a similar way using latex spheres instead of SiOi and then various sols such as Ti02 instead of the dye. When the impregnated polymer is burned out, the inverse opal has potential as a photonic... 

Kambour, R. P. and Russell, R. R. (1971) Electron microscopy of crazes in polystyrene and rubber modified polystyrene use of iodine-sulphur eutectic as a craze reinforcing impregnant, Polymer, 12, 237-246. 

Metallic Ag was also in-situ prepared to form the poly(3-octylthio-phene)/silver (P30T/Ag) nanocomposites by impregnating polymer powder using silver perchlorate salt solutions [19]. The TEM picture and the size distribution of Ag nanoparticles are shown in Figure 6.9. 

In this procedure, volatiles from the fire debris are adsorbed onto a suitable substrate such as a carbon-impregnated polymer commonly referred to as the carbon strip method. The process is determined by diffusion of volatiles to the surface of the adsorbent hence, it is considered to be a passive or static... 

Tate S, Chiba S, Tani K (1996) Melt viscosity reduction of poly (ethylene terephthalate) by solvent impregnation. Polymer 37 (19) 4421-4424... 

Extraction isotherms of nitric, sulphuric, and hydrochloric acids in comparison with solvent extraction data (Figure 8.15) show that extraction capacity of TBP in TVEX resins. An increase of TBP capacity in TVEX-TBP is caused by the extractant state in the polymer matrix. The extraction capacity of mineral acids by TVEX-TBP decreases in the sequence HNO3 > H2SO4 > HCI (Figure 8.15a,b,c), and when compared with TBP solvent extraction performance, the capacity of the impregnated polymers exceeds 1.5 times the capacity of HNO3, 3.5 times that of HCI, and several times that of H2SO4. 

The original process of impregnating polymer membranes with dopants. The precast, fully dense membranes are placed in baths of dopants and allowed to absorb the dopant which assists in proton conductivity. 

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