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  • 1
    Electronic Resource
    Electronic Resource
    Hoboken, NJ : Wiley-Blackwell
    Journal of Polymer Science 10 (1953), S. 510-512 
    ISSN: 0022-3832
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Hoboken, NJ : Wiley-Blackwell
    Journal of Polymer Science 13 (1954), S. 589-594 
    ISSN: 0022-3832
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Additional Material: 5 Ill.
    Type of Medium: Electronic Resource
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  • 3
    ISSN: 0142-2421
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Physics
    Notes: In this study the analysis of ionic and neutral species produced by the interaction between laser radiation and SnSe and SnTe targets is reported. Time of flight mass spectrometry and emission spectroscopy are used for the characterization of the ablated material. Relations between target and plume composition are discussed in order to improve the understanding of the laser deposition process.
    Additional Material: 5 Ill.
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  • 4
    Electronic Resource
    Electronic Resource
    Hoboken, NJ : Wiley-Blackwell
    Journal of Biomedical Materials Research 19 (1985), S. 1073-1084 
    ISSN: 0021-9304
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Medicine , Technology
    Notes: The electrochemical behavior of aluminum in isotonic saline solutions, citrated human plasma, and citrated human blood is studied using potentiostatic and potentiodynamic polarization techniques complemented with scanning electron microscopy (SEM) and dispersive x-ray analysis. The effect of corrosion products on plasmatic proteins is investigated using electron microprobe analysis and immunoelectrophoresis analysis. Electrochemical data show a breakdown of the protective film on aluminium, due to the action of chloride, leading to the pitting of the metal. During pitting, the interaction of aluminium ion and the plasma proteins produces a nonadherent precipitate. Strong protein denaturation can be observed by immunoelectrophoresis of the precipitate suspended in physiologic solutions. The convenience of using organic fluids in addition to saline solutions to evaluate in vitro the behavior of metal for implants is suggested.
    Additional Material: 10 Ill.
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  • 5
    Electronic Resource
    Electronic Resource
    New York : Wiley-Blackwell
    Die Makromolekulare Chemie 118 (1968), S. 128-143 
    ISSN: 0025-116X
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Description / Table of Contents: An verstrecktem Polyäthylenterephthalat wurden differentialkalorimetrische und Dichtemessungen durchgeführt. Die Kristallinität und die Schmelzwärme hängen von der Art der molekularen Umordnungen ab, die durch Verstreckungsgrad und Verstrecktemperatur bestimmt wird. Bei niedrigen Temperaturen (nahe der Einfriertemperatur) lösen die Moleküle ihre Verspannungen durch Entknäuelung unter geringem Gleiten und ohne wesentliche Parallelisierung der Ketten. Bei Temperaturen über 100°C gleiten die Moleküle aneinander ab und entspannen sich unter nur schwacher Entknäuelung. Bei Proben, die bel Temperaturen in der Nähe der Einfriertemperatur mehr als 160% gestreckt werden, tritt spannungsinduzierte Kristallisation auf; bei starker Spannung tritt sowohl Kettenparallelisierung als auch Entknäuelung ein und ruft bei diesen Temperaturen Kristallisation hervor. Bei noch höheren Temperaturen und starker Spannung ist die Entknäuelung zu gering, um eine Kristallisation zuzulassen. Beim Tempern einer verstreckten Probe unter Spannung nimmt die Entknäuelung proportional dieser Spannung zu.
    Notes: Dynamic differential calorimetry and density measurements have been made on drawn polyethylene terephthalate. The crystallinity and heats of fusion depend on the type of molecular rearrangements produced by the extent of draw and the temperature of draw. At low temperatures (near the glass transition) the molecules relieve strain by uncoiling with little sliding or alignment occurring. At temperatures above 100°C the molecules glide past one another to relieve strain with little uncoiling Strain-induced crystals are formed in the samples drawn more than 160% at temperatures near the glass transition; at high strain, both chain alignment and uncoiling occur and produce crystallization at these temperatures. At higher temperatures and high strain, the uncoiling is too small to allow crystallization. Annealing a drawn sample under strain resulted in an increase in uncoiling which is proportional to the strain.
    Additional Material: 10 Ill.
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  • 6
    ISSN: 0022-3832
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Notes: A number of polyelectrolytes of known molecular structure and varying concentration of ionizable groups along the chain have been prepared and the activity coefficient of sodium counterions has been measured as a function of dilution. When the spacing of ionizable groups along the chain is smaller than a certain value, the activity coefficient has been found to be particularly low and almost invariant with concentration. Above this value, the behavior approaches that commonly observed for low molecular weight electrolytes. A very simple theoretical treatment due to Oosawa has been found to explain satisfactorily the most essential features of the experimental results and has given the basis for a relationship between degree of dissociation and molecular structure of polyelectrolytes.
    Additional Material: 3 Ill.
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  • 7
    Electronic Resource
    Electronic Resource
    New York : Wiley-Blackwell
    Journal of Polymer Science Part A: General Papers 3 (1965), S. 3421-3426 
    ISSN: 0449-2951
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Notes: Radiation-induced polymerization of 1,2-cyclohexene oxide was investigated in the liquid and in the solid state. Addition of water drastically reduces the rate of polymerization and the molecular weight of the obtained polymer. The results have been interpreted according to an ionic mechanism.
    Additional Material: 2 Ill.
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