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  • 1
    Digitale Medien
    Digitale Medien
    Comparison of the structures and aqueous solutions of [(o-phenylenediaminetetraacetato(2-)]cobalt(II) and [ethylenediaminetetraacetato(2-)]cobalt(II) (1978)
    s.l. : American Chemical Society
    Inorganic chemistry 17 (1978), S. 1383-1394 
    Details
    ISSN: 1520-510X
    Quelle: ACS Legacy Archives
    Thema: Chemie und Pharmazie
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1021/ic50184a001
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 2
    Digitale Medien
    Digitale Medien
    The oxidative inducation test applied to medical PVC and other polymers (1991)
    Brookfield, Conn. : Wiley-Blackwell
    Journal of Vinyl and Additive Technology 13 (1991), S. 199-203 
    Details
    ISSN: 0193-7197
    Schlagwort(e): Chemistry ; Chemical Engineering
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Maschinenbau , Werkstoffwissenschaften, Fertigungsverfahren, Fertigung
    Notizen: We have examined the applicability of this simple and effective test to polymer systems widely used in the medical industry. First, it was found that not every polymer examined exhibited a distinct onset of autocatalytic oxidation detectable by DSC. However, for cases where distinct onsets are found, powerful insights can be obtained. These included activation energy of the degradation, thermal oxidative shelf life prediction, and correlation, with product performances. Actual examples are presented to illustrate the utility of the test.
    Zusätzliches Material: 8 Ill.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1002/vnl.730130408
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  • 3
    Digitale Medien
    Digitale Medien
    Model simulation of radio frequency heatseal performance of flexible PVC and other materials (1992)
    Brookfield, Conn. : Wiley-Blackwell
    Journal of Vinyl and Additive Technology 14 (1992), S. 187-190 
    Details
    ISSN: 0193-7197
    Schlagwort(e): Chemistry ; Chemical Engineering
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Maschinenbau , Werkstoffwissenschaften, Fertigungsverfahren, Fertigung
    Notizen: Despite the long history of the application of radio frequency energies for the joining and assembly of polymer films and articles, a comprehensive, quantitative understanding of all the factors has been lacking. In this article, a quantitative first principle type study is described for flexible PVC of various plasticizer contents and ethylene vinyl acetate (EVA) of different VA compositions. High frequency dielectric data of up to 10 MHz were collected over broad temperature ranges. Separate thermal properties of specific heat and thermal conductivity were determined. In addition, rheological functions over required temperatures and shear rates were applied. Comparisons of predicted heatseal behavior with experimental observations are presented.
    Zusätzliches Material: 9 Ill.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1002/vnl.730140405
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  • 4
    Digitale Medien
    Digitale Medien
    TPE and subambient behaviors of flexible PVC (1990)
    Brookfield, Conn. : Wiley-Blackwell
    Journal of Vinyl and Additive Technology 12 (1990), S. 198-203 
    Details
    ISSN: 0193-7197
    Schlagwort(e): Chemistry ; Chemical Engineering
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Maschinenbau , Werkstoffwissenschaften, Fertigungsverfahren, Fertigung
    Notizen: An experimental investigation was undertaken on the thermoplastic elastomer and subambient behaviors of flexible PVC. From cyclic mechanical testing, it was determined that adequate TPE performance can be obtained, especially at low frequencies. Combined with rheology data, a model consistent with crystallite tie points was reaffirmed. The subambient impact toughness was found to be a sigmoidal function of temperature. Very encouraging agreements were obtained between impact toughness and prediction on dissipations based on dynamic mechanical analysis (DMA).
    Zusätzliches Material: 15 Ill.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1002/vnl.730120404
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  • 5
    Digitale Medien
    Digitale Medien
    Dynamic mechanical analysis and its relationship to impact transitions (1994)
    Stamford, Conn. [u.a.] : Wiley-Blackwell
    Polymer Engineering and Science 34 (1994), S. 420-427 
    Details
    ISSN: 0032-3888
    Schlagwort(e): Chemistry ; Chemical Engineering
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Chemie und Pharmazie , Maschinenbau , Physik
    Notizen: Detailed, instrumented impact tests were carried out between about - 100 and 60°C for flexible poly(vinyl chloride) (PVC), ethylene vinyl acetate (EVA), and polypropylene (PP) films. Secondary impact transitions in addition to the main transitions were detected for all three films, indicating that multiple impact transitions may be far more general in occurrence than commonly expected. Wide frequency (from 0.05 to 100 Hz) dynamic mechanical spectra of the same materials were also generated over similar temperature ranges. A new data treatment method was proposed whereby the material dissipation function was evaluated by summing the responses over broad frequency ranges of the loss modulus and the impulse spectrum. The dissipation function when plotted as a function of temperature was found to accurately (to within 3 to 5°C) predict the location of the main impact transitions for all three polymers. In addition, the existence and location of the secondary impact transitions for both PVC an PP were predicted. Both the functional form and the temperature match between the experiments and predictions strongly support the validity of the proposed method. However, some discrepancy remained in predicting the very low temperature (-65°C) impact transition for EVA.
    Zusätzliches Material: 15 Ill.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1002/pen.760340507
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