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  • Wiley-Blackwell  (24)
  • Springer Nature  (8)
  • American Institute of Physics  (2)
  • Amsterdam [u.a.] : Elsevier  (1)
  • 2020-2021
  • 1985-1989  (25)
  • 1965-1969  (4)
  • 1960-1964  (6)
Collection
Keywords
Publisher
Language
Years
Year
  • 11
    Electronic Resource
    Electronic Resource
    Retention relationships in chromatography-derivation of a general equation (1989)
    Weinheim : Wiley-Blackwell
    Journal of High Resolution Chromatography 12 (1989), S. 342-345 
    Details
    ISSN: 0935-6304
    Keywords: Retention relationships ; General equation ; Iterative procedure ; Logarithmic and linear indices ; Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Additional Material: 2 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jhrc.1240120522
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  • 12
    Electronic Resource
    Electronic Resource
    Dimensionless representation of concentration profiles in chromatography-application to preparative chromatography (1988)
    Weinheim : Wiley-Blackwell
    Journal of High Resolution Chromatography 11 (1988), S. 592-594 
    Details
    ISSN: 0935-6304
    Keywords: Dimensionless volume ; Approximate functions ; Exact relationship ; Preparative chromatography ; Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jhrc.1240110809
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  • 13
    Electronic Resource
    Electronic Resource
    High-energy ion implantation of polymers: Poly(ethylene terephthalate) (1987)
    Bognor Regis [u.a.] : Wiley-Blackwell
    Journal of Polymer Science Part B: Polymer Physics 25 (1987), S. 817-827 
    Details
    ISSN: 0887-6266
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Notes: The effect of high-energy ion implantation of oxygen into a thin film of poly(ethylene terephthalate) (PET) was studied by Fourier transform infrared spectroscopy and differential scanning calorimetry (DSC). Mylar samples 13 μm thick were implanted with 6-MeV oxygen ions at fluences ranging from 5 × 1012 to 2 × 1014 ions/cm2. The DSC data showed a substantial loss of crystallinity, even at the lowest fluence, which extended deeper into the polymer film than the predicted range for oxygen deceleration in PET. Solubility measurements indicated the presence of cross-linking, especially at the highest fluence, but bands due to cross-linking could not be detected in the infrared. The trans/gauche ratio for the glycol group conformation was measured by a pair of conformationally sensitive infrared bands. Surprisingly, the conformation of the glycol segments did not change appreciably with increasing fluence, although crystallinity decreased and degree of cross-linking increased. The implications these results have on possible mechanisms of chemical and physical alterations of the polymer structure by ion implantation are discussed.
    Additional Material: 5 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/polb.1987.090250410
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  • 14
    Electronic Resource
    Electronic Resource
    High-energy ion implantation of polymers: Poly(vinylidene fluoride) (1988)
    Bognor Regis [u.a.] : Wiley-Blackwell
    Journal of Polymer Science Part B: Polymer Physics 26 (1988), S. 1457-1467 
    Details
    ISSN: 0887-6266
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Notes: Poly(vinylidene fluoride) films were implanted with high-energy (up to 6 MeV) He, C, O, and Ni ions and characterized using DSC, FTIR, and solubility measurements. None of the ions were energetic enough to penetrate the polymer film completely. The effects of ion energy, fluence, and ion type were studied individually. The implantation process lowered the crystallinity, induced crosslinking, and produced carbonyl groups on the polymer. The ion energy (in the range 0.4-4.5 MeV for He ions) had the most drastic effect, the radiation damage was found to increase with decreasing energy. The sample implanted with 0.4 MeV He ions lost 81% of its initial crystallinity and was only 24% soluble, even though the incident ions have a range of only 2.7 μm in this case. The other samples retained most of their initial crystallinity but still were substantially cross-linked. The results can be qualitatively explained by assuming that hydrogen free radicals, produced during implantation, can diffuse throughout the sample and react, resulting in crystallinity and solubility losses beyond the ion deceleration region.
    Additional Material: 7 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/polb.1988.090260709
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  • 15
    Electronic Resource
    Electronic Resource
    Residual porosity in polymeric latex films (1989)
    New York, NY [u.a.] : Wiley-Blackwell
    Journal of Applied Polymer Science 38 (1989), S. 557-569 
    Details
    ISSN: 0021-8995
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Solubility and diffusivity measurements of a probe gas (CO2), which has an inherently low solubility in the polymer, have been used to characterize residual porosity in polymeric latex films. Sorption isotherms resembling those of a glassy polymer were obtained, even though the glass transition temperature of the polymer was 1°C, about 30°C below the experimental temperature. Solvent cast films of the same polymer exhibited much lower solubilities, and followed the expected Henry's law behavior. CO2 solubility and diffusivity were found to decrease with aging time for the latex films, but did not quite reach the values of the solvent cast films, even after 75 days at room temperature. The sorption data could be described by the dual-mode sorption model, which is commonly employed in the analysis of glassy polymer sorption isotherms. Estimates of the amount of porosity were made from the sorption data, and values ranging from 0.6-0.03% were obtained for latex films aged from 62 h to 75 days, respectively. Our results suggest that permeability differences noted by others for latex and solvent cast films of the same polymer are due to the substantial solubility differences for low-solubility penetrants in these two types of films.
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/app.1989.070380315
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  • 16
    Electronic Resource
    Electronic Resource
    Stoffübergang in hochviskosen GemischenVortrag von S. Mahiout auf dem Jahrestreffen der Verfahrens-Ingenieure, 25. bis 27. Sept. 1985 in Hamburg. (1986)
    Weinheim : Wiley-Blackwell
    Chemie Ingenieur Technik - CIT 58 (1986), S. 62-63 
    Details
    ISSN: 0009-286X
    Keywords: Fluiddynamik ; Stoffübergang ; hochviskose Gemische ; Siebboden ; Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cite.330580121
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  • 17
    Electronic Resource
    Electronic Resource
    Zur Fluiddynamik und zum Stoffübergang Newtonscher und nicht-Newtonscher Gemische auf Siebböden (1987)
    Weinheim : Wiley-Blackwell
    Chemie Ingenieur Technik - CIT 59 (1987), S. 746-747 
    Details
    ISSN: 0009-286X
    Keywords: Fluiddynamik ; Stoffübergang ; Newtonsche und nicht-Newtonsche Gemische ; Siebboden ; Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cite.330590915
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  • 18
    Electronic Resource
    Electronic Resource
    Einfluß der Partikeloberflächenbeschaffenheit auf den Gasgehalt eines dreiphasig betriebenen SchlaufenreaktorsErweiterte Fassung eines Vortrags von N. Räbiger auf der GVC-Fachausschußsitzung “Mehrphasenströmungen”, 19./20. Febr. 1987 in Hannover. (1988)
    Weinheim : Wiley-Blackwell
    Chemie Ingenieur Technik - CIT 60 (1988), S. 417-417 
    Details
    ISSN: 0009-286X
    Keywords: Dispergieren ; Dreiphasenströmung ; Kompaktreaktor ; Oberflächenbeschaffenheit ; Schlaufenreaktor ; Suspension ; Turbulenzintensität ; Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cite.330600517
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  • 19
    Electronic Resource
    Electronic Resource
    A facile synthesis of substituted perhydro-1,3-thiazin-4-ones and 2-thioxoperhydro-4-pyrimidinones (1988)
    Weinheim : Wiley-Blackwell
    Liebigs Annalen 1988 (1988), S. 983-987 
    Details
    ISSN: 0170-2041
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Eine einfache Synthese von substituierten Perhydro-1,3-thiazin-4-onen und 2-Thioxoperhydro-4-pyrimidinonenDie basisch katalysierte Cyclisierung der N-Propenoylthioharnstoffe 3 liefert je nach den Reaktionsbedingungen entweder 2,6-disubstituierte 2,3,5,6-Tetrahydro-4H-1,3-thiazin-4-one 4 oder 1,6-disubstituierte 2-Thiouracile 5. Unter denselben Reaktionsbedingungen können die Verbindungen 5 durch eine Art Dimroth-Umlagerung aus den 1,3-Thiazin-4-onen 4 erhalten werden.
    Notes: Depending on the reaction conditions either 2,6-disubstituted 2,3,5,6-tetrahydro-4H-1,3-thiazin-4-ones 4 or 1,6-disubstituted 2-thiouracils 5 are readily prepared by base-catalyzed cyclization of N-propenoylthioureas 3. Compounds 5 could also be obtained by Dimroth-type rearrangement of 1,3-thiazin-4-ones 4 under the same reaction conditions.
    Additional Material: 2 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jlac.198819881009
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  • 20
    Electronic Resource
    Electronic Resource
    The infrared absorption characteristics of poly(methyl methacrylate) doped with luminescent materials (1987)
    Weinheim : Wiley-Blackwell
    Acta Polymerica 38 (1987), S. 443-446 
    Details
    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 Infrarotspektren von Poly(methylmethacrylat)-Probenn die mit verschiedenen lumineszierenden Substanzen dotiert wurden, weisen außer beim β-Naphthol keine wesentlichen Änderungen der Lage und Intensität der Absorptionsbanden auf. Daher wird angenommen, daß zwischen den meisten Dotierungsmitteln und PMMA keine Wechselwirkung besteht, während beim β-Naphthol zwischen benachbarten Molekülen in der Polymermatrix Wasserstoffbindungen auftreten.
    Notes: The infrared spectra of poly(methyl methacrylate) samples doped with different luminescent materials show no drastic changes in the position and intensity of the absorption bands, except in case of β-naphthol. From this it is supposed that there is no interaction between the dopant and PMMA with most of the investigated materials, while with β-naphthol hydrogen bonding between adjacent molecules in the polymer matrix is observed.
    Additional Material: 5 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/actp.1987.010380708
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