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  • Polymer and Materials Science  (114)
  • Physics
  • 1980-1984
  • 1960-1964  (114)
  • 1964  (114)
  • 1
    Electronic Resource
    Electronic Resource
    Thermosetting vinyl and acrylic copolymers (1964)
    New York, NY [u.a.] : Wiley-Blackwell
    Journal of Applied Polymer Science 8 (1964), S. 1919-1919 
    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
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/app.1964.070080437
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  • 2
    Electronic Resource
    Electronic Resource
    Fractionation of polymers of higher α-olefins (1964)
    New York : Wiley-Blackwell
    Journal of Polymer Science Part A: General Papers 2 (1964), S. 2305-2326 
    Details
    ISSN: 0449-2951
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Notes: Fractionation of 1-10 g. samples of a series of poly-α-olefins in a glass bead column has been studied. A thermal gradient was found to decrease fractionation efficiency relative to that obtained at constant (ambient) temperatures. A “stepwise-continuous” solvent gradient technique was developed to improve fractionation of the high molecular weight material. Fractionation efficiency decreased with increasing bead loading but was still good at polymer to bead ratios of 0.1 compared to the ratio of 0.01 usually used; efficiency is poorer in the absence of a column, even when the latter is operated at constant temperature. The Kuhn-Mark-Houwink equation was used to correlate intrinsic viscosities to light-scattering molecular weights. Values of the constants were K = 2.1 × 10-4 and α = 0.61. Molecular weight distribution correlations show these polymers to have very high Mw/Mn.
    Additional Material: 12 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/pol.1964.100020522
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  • 3
    Electronic Resource
    Electronic Resource
    An anomaly in the measurement of permanent set (1964)
    New York : Wiley-Blackwell
    Journal of Polymer Science Part B: Polymer Letters 2 (1964), S. 63-65 
    Details
    ISSN: 0449-2986
    Keywords: Chemistry ; Polymer and Materials Science
    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/pol.1964.110020116
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  • 4
    Electronic Resource
    Electronic Resource
    Cation exchange resins as catalysts in the preparation of polyesters (1964)
    New York, NY [u.a.] : Wiley-Blackwell
    Journal of Applied Polymer Science 8 (1964), S. 1305-1310 
    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: Polyesters for use in preparation of flexible polyurethane foam were made by the use of C.N.S.L. cation exchange resin as catalyst in xylene medium. With 6% of the C.N.S.L. resin, the time needed to reach the lowest acid number (about 3.5) was 4 hr. For comparison, 2% of various cation exchange resins (C.N.S.L. resin, Zeo-Karb 215, Amberlite IR 20, and Amberlite IRC 50) were empolyed in exylene medium, to make the polyesters. The results indicated that in these polyesterification experiments, C.N.S.L. resin gave the lowest acid number in 14 hr.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/app.1964.070080321
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  • 5
    Electronic Resource
    Electronic Resource
    Friction of polymer films. II. Effect of deformation properties (1964)
    New York, NY [u.a.] : Wiley-Blackwell
    Journal of Applied Polymer Science 8 (1964), S. 1477-1482 
    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: The effect of mechanical deformation properties on the frictional behavior of cellulose film coated with vinylidene chloride-acrylonitrile copolymer was investigated. A device for measuring the deformation properties of thin polymer films by static indentation techniques was developed. The mode of deformation of the polymer coated cellophane was found to be intermediate between plastic and elastic with a measured deformation index m of 2.35. A mathematical relationship between surface roughness, load, deformation index, and coefficient of friction was developed. It was shown that the coefficient of friction of the polymer film varied with the number of surface asperities to the (2/m)-1 power, and that the friction also varied with load to the same power. The frictional behavior of polymers as a function of several variables could be expressed in terms of a single material constant, the deformation index. Although derived from static measurements, this index is applicable to dynamic systems.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/app.1964.070080336
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  • 6
    Electronic Resource
    Electronic Resource
    Heat aging in fluoroelastomers (1964)
    New York, NY [u.a.] : Wiley-Blackwell
    Journal of Applied Polymer Science 8 (1964), S. 1415-1427 
    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: Continuous and intermittent stress relaxation measurements have been made on a copolymer of vinylidene fluoride and hexafluoropropylene crosslinked with diamines or high energy radiation, and a study has been made of the effect of heat on the raw polymer. The results show that heat aging in diamine vulcanizates is the result of two simultaneous processes; one is a rapid oxidative reaction in and at the crosslinks resulting in the replacement of the primary crosslinks by a more thermally stable type, and the other is an oxidative reaction in the polymer main chain leading to a very slow breakdown of the rubber network. This second reaction is thought to be identical with that occurring in the unvulcanized polymer. The surprisingly poor resistance to compression set of diamine vulcanizates is consistent with the first process, and the good long-term aging properties are a result of the second one.
    Additional Material: 9 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/app.1964.070080331
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  • 7
    Electronic Resource
    Electronic Resource
    X-ray determination of crystallinity in poly(ethylene terephthalate) (1964)
    New York, NY [u.a.] : Wiley-Blackwell
    Journal of Applied Polymer Science 8 (1964), S. 1521-1529 
    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: Three recently published x-ray methods for determining the crystallinity of poly(ethylene terephthalate) are discussed and compared with density and infrared methods. The effect of crystallite size is shown to account for most of the disagreement among the several methods. A short method of estimating crystallinity from x-ray diffraction, suitable for counting techniques and requiring only two measurements, is presented and compared with the density method.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/app.1964.070080402
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  • 8
    Electronic Resource
    Electronic Resource
    Friction of polymer films. I. Lubrication (1964)
    New York, NY [u.a.] : Wiley-Blackwell
    Journal of Applied Polymer Science 8 (1964), S. 1465-1475 
    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: The behavior of several long chain fatty lubricants in thin films of vinylidene chloride-acrylonitrile copolymer and the nature of the lubricated polymer surfaces were studied by means of frictional measurements, critical surface tension of wetting, and light microscopy. The surfaces of the bulk lubricants were also characterized by wetting studies. The critical surface tension of wetting parameter was found to be both a means of characterizing the configuration of the lubricant layer and a measure of the extent to which the polymer surface was covered by the lubricant. There was no evidence of orientation of the lubricant layer on the polymer surface and no evidence of plasticization of the polymer by the lubricant. All lubricants studied appeared in the bulk state at the polymer surface in quantities related to the chain length and chemical constitution of the lubricant. Correlations were observed between the coefficient of static friction of the polymer film and its critical surface tension of wetting. Solid fatty amides having chain lengths of eighteen carbon atoms or greater were found to be effective lubricants for the polymer studied. The lubricating action of these fatty materials was explained in terms of their low surface energies and high structural strengths when in the bulk crystalline state.
    Additional Material: 8 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/app.1964.070080335
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  • 9
    Electronic Resource
    Electronic Resource
    Oxygen-transfer resins, a new type of oxidation-reduction polymers (1964)
    New York, NY [u.a.] : Wiley-Blackwell
    Journal of Applied Polymer Science 8 (1964), S. 2899-2908 
    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: Bifunctional cation exchangers with carboxylic and sulfonic acid groups can be oxidized with aqueous hydrogen peroxide which converts the carboxylic to percarboxylic acid groups. The oxidized resins can be used to hydroxylate compounds with olefinic double bonds to form α-glycols. The resins thus transfer active oxygen from a peroxide to an unsaturated substrate. Oxidation and reduction of the resins is reversible.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/app.1964.070080633
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  • 10
    Electronic Resource
    Electronic Resource
    Effect of molecular weight distribution on the sprayability of poly(methyl methacrylate) (1964)
    New York, NY [u.a.] : Wiley-Blackwell
    Journal of Applied Polymer Science 8 (1964), S. 881-887 
    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: Factors which influence the sprayability of poly(methyl methacrylate) lacquers are discussed. A method of prediction this property based on considerations of the molecular weight distribution of the polymer is presented.
    Additional Material: 6 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/app.1964.070080227
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