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  • 1
    Electronic Resource
    Electronic Resource
    Polymer deformation studies by time resolved Fourier transform infrared spectroscopy (1983)
    Springer
    Polymer bulletin 10 (1983), S. 51-55 
    Details
    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 We have applied a newly developed time resolved Fourier transform infrared spectroscopy to follow microstructural changes in two semicrystalline polymers with time resolution in the order of milliseconds. This is the first demonstration of a spectroscopic technique which is capable of measuring structural changes at the segmental level and relating them to macroscopic changes measured by dynamical mechanical spectroscopy.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00263238
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  • 2
    Electronic Resource
    Electronic Resource
    Deformation studies of polystyrene/poly(vinyl methyl ether) blends by mechanical-vibrational spectroscopy (1983)
    Stamford, Conn. [u.a.] : Wiley-Blackwell
    Polymer Engineering and Science 23 (1983), S. 861-868 
    Details
    ISSN: 0032-3888
    Keywords: Chemistry ; Chemical Engineering
    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: We have analyzed the deformation behavior of compatible and incompatible polystyrene (PS) and poly(vinyl methyl ether) (PVME) blends by a combination of mechanical and vibrational spectroscopy. Macroscopic properties and segmental orientation were found to be sensitive to molecular weight, strain rate, and temperature of measurement above the glass-transition temperature. Considerably different orientation functions were found for the PS and PVME components. For the experiments carried out above the Tg of the blends, the deformation behavior measured was consistent with expectations of a rubbery network.
    Additional Material: 15 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/pen.760231602
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  • 3
    Electronic Resource
    Electronic Resource
    Spectroscopic study of rigid-rod polymers. II. Protonation effect (1982)
    New York : Wiley-Blackwell
    Journal of Polymer Science: Polymer Physics Edition 20 (1982), S. 509-521 
    Details
    ISSN: 0098-1273
    Keywords: Physics ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Notes: The protonation of a heterocyclic rigid-rod polymer poly(p-phenylene benzbisthiazole) and its model compound has been studied by UV-visible and Raman spectroscopy. Because of the two nitrogens on the heterocyclic ring, spectroscopic features of unprotonated, half-protonated, and fully protonated structures have been identified. For the fully protonated molecule, there is also an increase in conjugation between the phenyl ring and the heterocyclic ring.
    Additional Material: 5 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/pol.1982.180200312
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  • 4
    Electronic Resource
    Electronic Resource
    Structure of polyethylene solid solutions from vibrational spectroscopy and thermal analysis (1980)
    New York : Wiley-Blackwell
    Journal of Polymer Science: Polymer Physics Edition 18 (1980), S. 1421-1431 
    Details
    ISSN: 0098-1273
    Keywords: Physics ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Notes: Solid solutions of two low-molecular-weight polyethylene fractions, formed by rapid quenching from the melt, were studied by differential scanning calorimetry, low-frequency Raman spectroscopy, and Fourier-transform infrared spectroscopy. Two kinds of defects exist in these solid solutions; namely, a disruption of chain extension and the presence of monoclinic packing. The distribution of fully extended chain-segment lengths and the intensity of the 717 cm-1 infrared band, characteristic of the monoclinic phase, are found to be composition dependent. Our spectroscopic studies of the solid solutions support the model first proposed by Ott and Slagle.
    Additional Material: 8 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/pol.1980.180180620
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