Polytetrafluoroethylene films

Q. Lu and S.S. Hu, Studies on direct electron transfer and biocatalytic properties of haemoglobin in polytetrafluoroethylene film. Chem, Phys. Lett. 424, 167-171 (2006). [Pg.597]

Figure 1. Implantation of electrons in polytetrafluoroethylene films to form electric transducer of high stability and sensitivity.

Allan, A. J. G. Wettability and friction of polytetrafluoroethylene film effect of prebonding treatments- J. Polymer Sci. 24, 461—466 (1957). [Pg.490]

Aptel et al. [40] observed a reduction of separation factor as a function of decreasing membrane thickness for grafted polytetrafluoroethylene films using a water/dioxane mixture. They have shown in a different study [41] that transport rate is inversely proportional to thicknes in the pervaporation separation of water through poly(tetra fluoroethylene)-poly(4-vinylpyridine) membranes. [Pg.53]

Preparation of Permselective Membranes by Radiation Grafting of Hydrophilic Monomers into Polytetrafluoroethylene Films... [Pg.577]

There are different ways that low energy surfaces can be applied to textiles. The first way is mechanical incorporation of the water-repellent prodncts in or on the fibre and fabric surface, in the fibre pores and in the spacing between the fibres and the yams. Examples of these are paraffin emulsions. Another approach is the chemical reaction of the repellent material with the fibre snrface. Examples of these are fatty acid resins. Yet another method is the formation of a repellent fihn on the fibre surface. Examples of these are silicone and flnorocarbon prodncts. The final approach is to use special fabric constructions like stretched polytetrafluoroethylene films (Goretex), films of hydrophilic polyester (Sympatex) and microporous coatings (hydrophilic modified polynrethanes). [Pg.75]

Polymethylsiloxane film Fatty acid monolayer Polytetrafluoroethylene film -Fatty acid monolayer Polymethacrylic ester of O -octanol Perfluorolauric acid monolayer... [Pg.44]

Chapiro A, Jendrychowska-Bonamour AM, Mizrahi S. Preparation of mosaic membranes by radiochemical grafting in polytetrafluoroethylene films. Eur Polym J 1976 12(11) 773—80. [Pg.40]

Kostov, G.K. and Turmanova, S.C. 1997. Radiation-initiated graft copolymerization of 4-vinylpyridine onto polyethylene and polytetrafluoroethylene films and anion-exchange membranes therefrom. J Appl Polym Sci. 64 1469-1475. [Pg.299]

In many cases, however, azimuthally dependent patterns are obtained as, for example in annealed polytetrafluoroethylene film. Such scattering may be treated in terms of the previously described non-random orientation correlation theories. An alternate approximate approach is that proposed by Keijzers et in which a scattering pattern... [Pg.132]

Aptel P, Cuny J, Josefowicz J, Neel J (1972), Liquid transport through membranes prepared by grafting of polar monomers onto polytetrafluoroethylene films. Parts 1, J. Appl. Polym. Sci., 16 1061, Part 11,/. Appl. Polym. Sci., 18 (1974), 351, Part 111,/. Appl. Polym. Sci., 18 (1974), 365. [Pg.200]

Skiving skiv-ipi vf skived skiving [prob. of Scand origin akin to ON skifa to slice] (ca. 1825) Slicing off a thin layer. Skiving is the method by which veneers are cut from logs and by which polytetrafluoroethylene film is produced from cylindrical bars of ram-extruded or sinter-molded resin. PTFE film is made in this way because, unlike most thermoplastics, it cannot be directly extruded into film. [Pg.670]

Parylene N/D (poly-/)-xylylene/poly-dichloro-/7-xylylene) 25 pm film Cellulose acetate film Cellulose triacetate film Polytetrafluoroethylene film Perfluoroalkoxy film Fluorinated ethylene-propylene copolymer film... [Pg.2125]

J.Y. Li, K. Sato, S. Ichizuri, S. Asano, S. Ikeda, M. lida, A. Oshima, Y. Tabata and M. Washio, Pre-irradiation induced grafting of styrene into cross-linked and non-cross-linked polytetrafluoroethylene films for polymer electrolyte fuel ceU applications. I Influence of styrene grafting conditions, Eur. Polym. J. 40, 775 (2004). [Pg.113]

Yamaki, T., Tsukada, J., Asano, M., Katakai, R. and Yoshida, M. (2007) Preparation of highly stable ion exchange membranes by radiation-induced graft copolymerization of styrene and bis(vinyl phenyl)ethane into crossUnked polytetrafluoroethylene films. J. Fuel Cell Sci. Technol. 4, 56-64. [Pg.213]

Yu, H., Shi, J., Zeng, X., Bao, M., and Zhao, X. (2009) A proton-exchange membrane prepared by the radiation grafting of styrene and silica into polytetrafluoroethylene films. Radiat. Phys. Chem., 78, 497-500. [Pg.1109]

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