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  • 1
    ISSN: 1750-3841
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Poly(ethylene glycol) (PEG)-like structures were generated on stainless steel under di(ethylene glycol) vinyl ether (DiEGVE) radio frequency-plasma environments. Electron spectroscopy for chemical analysis and attenuated total reflectance Fourier transform infrared spectroscopy indicated a PEG-like deposition, which was stable to cleaning, sanitizing, and storage for up to 2 mo. Atomic force microscopy and water contact angle analysis indicated that the modified stainless-steel surfaces were less rough and more hydrophilic than the unmodified surfaces. Listeria monocytogenes attachment and biofilm formation on modified surfaces decreased more than 90% compared with the unmodified stainless steel (P 〈 0.01). DiEGVE cold plasma was demonstrated to be a promising technique to reduce bacterial contamination on surfaces encountered in food-processing environments.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Origins of life and evolution of the biospheres 19 (1989), S. 293-294 
    ISSN: 1573-0875
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Geosciences
    Type of Medium: Electronic Resource
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  • 3
    ISSN: 1436-2449
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Summary High fluorine content macromolecular layers were deposited on polyethylene (PE) film surfaces under an originally designed, continuos-flow-system plasma reactor conditions. Survey and angle resolution, ESCA data and ATR-FTIR results indicate that the plasma-created films are thin and have a fairly uniform structure. The fluorinated layers have a 60% relative fluorine atomic concentration, and are mainly composed of CF2-CF, and C-CF3 groups. AFM images collected from virgin and plasma-exposed PE surfaces show a significantly rougher surface of the plasma-treated substrates. Applications can be envisaged for creating Teflon-like coatings on various polymeric film surfaces using a continuous plasma process.
    Type of Medium: Electronic Resource
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  • 4
    ISSN: 0323-7648
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Description / Table of Contents: Die Polymerisation des Styrens in Lösung mit N,N′-Bis[(4-t-butylazo-4-cyanovaleryl)-oxyethyl]-azo-bis-formamid als bifunktionellem Initiator wurde untersucht. Es wurde gezeigt, daß die Reakion von einigen Faktoren, wie Konzentrationen des Initiators und des Monomers, Temperatur und Zeit, beeinflußt wird. Um die Polymerausbeute und die Molekülmasse mit diesen Parametern zu korrelieren, wurden zwei Regressionsgleichungen aufgestellt, ausgehend von Versuchen nach einem experimentellen, zentrierten, rotierbaren Programm zweiter Ordnung.
    Notes: The solution polymerization of styrene in benzene by using N,N′-bis[(4-t-butylazo-4-cyanovaleryl]-oxyethyl)-azo-bis-formamide as a bifunctional initiator is studied. The reaction was proved to be influenced by some factors, namely, initiator and monomer concentrations, temperature, and duration. To correlate the polymer conversion and its molecular weight with these parameters, two regression equations were obtained by carrying out the experiments according to a centrated, rotatable, second order experimental design.
    Additional Material: 7 Ill.
    Type of Medium: Electronic Resource
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