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  • Polymer and Materials Science  (151)
  • Physics
  • 1980-1984
  • 1960-1964  (151)
  • 1955-1959
  • 1962  (76)
  • 1960  (75)
Collection
Keywords
Publisher
Years
  • 1980-1984
  • 1960-1964  (151)
  • 1955-1959
Year
  • 1
    Electronic Resource
    Electronic Resource
    Polymers from vinyl fluorideThis paper was presented at the Symposium on New Products and Applications for Fluorine-Containing Materials before the Division of Industrial and Engineering Chemistry at the 136th National Meeting of the American Chemical Society, Atlantic City, September, 1959. Contribution No. 546 from the Central Research Department, E. I. du Pont de Nemours and Company, Inc., Wilmington, Delaware. (1960)
    New York, NY [u.a.] : Wiley-Blackwell
    Journal of Applied Polymer Science 4 (1960), S. 55-61 
    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 free-radical polymerization of vinyl fluoride has been studied with the use of organic peroxide and azo initiators over the temperature range of 60-150°C. and at pressures of 75-1000 atm. Molecular weights of the polymers by osmotic pressure or radiotracer techniques were found to vary over the range of 45,000 to 180,000 depending on polymerization conditions employed. Stabilized high molecular weight polyvinyl fluoride may be compression-molded into tough, high-impact strength bars, or the unstabilized material may be cast into films from solvents such as dimethylformamide. The films, which may be cold drawn, are tough, brilliantly clear, and have tensile strengths near 8000 lb./in.2 They are also extremely resistant to weathering, maintaining clarity and cold drawability even after ten years' exposure in Florida.
    Additional Material: 6 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/app.1960.070041008
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  • 2
    Electronic Resource
    Electronic Resource
    A reply to skinner's “polymer rheology” (1962)
    New York, NY [u.a.] : Wiley-Blackwell
    Journal of Applied Polymer Science 6 (1962), S. S46 
    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
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/app.1962.070062420
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  • 3
    Electronic Resource
    Electronic Resource
    Comparative measurements on polystyrene with three different equilibrium ultracentrifuges (1962)
    Hoboken, NJ : Wiley-Blackwell
    Journal of Polymer Science 62 (1962), S. S136 
    Details
    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
    URL: http://dx.doi.org/10.1002/pol.1962.1206217454
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  • 4
    Electronic Resource
    Electronic Resource
    The anionic polymerization of acrylonitrile (1962)
    Hoboken, NJ : Wiley-Blackwell
    Journal of Polymer Science 58 (1962), S. 869-880 
    Details
    ISSN: 0022-3832
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Notes: The polymerization of acrylonitrile initiated by diethyl sodiomalonate in dimethylformamide has been investigated. The degree of polymerization was found to be independent of the monomer conversion but was dependent on the extent of polymerization. The polymers produced were examined for functional groups by infrared spectroscopy. An anionic mechanism involving hydride ion transfer to monomer has been suggested. The kinetics of the reaction can be followed because of the slow initiation step and are found to be governed by the rate expression -d[M]/dt = k[M]2[C]. The decrease in DP with increasing conversion is due to degradation of the polyacrylonitrile by basic ions. The ratios of the rate constants for both the monomer and polymer transfer reactions to the rate constant for propagation have been determined. The coloration of the polymers appears independent of the degradation reaction.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/pol.1962.1205816655
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  • 5
    Electronic Resource
    Electronic Resource
    Einfluß von trockener Hitze sowie von kaltem und heißem Wasser auf Holzlaminate. Teil I (1962)
    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 13 (1962), S. 209-211 
    Details
    ISSN: 0947-5117
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Description / Table of Contents: Influence of dry heat and of cold and hot water on wood laminatesInvestigations have been carried out on the influence of dry heat and of cold and hot water on the dynamic modulus of elasticity, on the volumetric stability, and on the weight of plywood obtained through glueing different types of tropical woods with synthetic resins.
    Notes: Untersucht und geklärt wurde der Einfluß van trockener Wärme sowie von Kalt- und Warmwasser auf den dynamischen Elastizitätsmodul, die Volumenbeständigkeit und auf das Gewicht van Sperrholz, das durch Verklebung verschiedener exotischer Hölzer mit Kunstharz erhalten wurde.
    Additional Material: 6 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/maco.19620130404
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  • 6
    Electronic Resource
    Electronic Resource
    Der Einfluß von trockener und feuchter Wärme auf Holz. Teil II. Der Einfluß von abwechselndem Erwärmen und Wässern in kaltem Wasser (1962)
    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 13 (1962), S. 287-290 
    Details
    ISSN: 0947-5117
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Description / Table of Contents: The influence on wood of dry and moist heat (Part 11)Whilst the first part of the present paper, published in Werkstoffe u. Korrosion 10 (1959), No. 10, pp. 613/6, dealt with the influence of continuous dry or moist heat on the elastic behaviour under dynamic stresses and on the volume constancy and water absorption of exotic woods, the present second part deals with the influence of exposure cycles, consisting of oven drying and drenching in cold water, on the mechanical and chemical properties of different types of Indian woods.
    Notes: Während im 1. Ted der vorliegenden Abhandlung (Werkstoffe u. Korrosion 10 [1959] H. 10, s. 613/6) den Einfluß kontinuierlicher trockener und feuchter Wärme auf das Verhalten unter dynamischer Beanspruchung sowie auf Volumenbeständigkeit und Wasserabsorption exotischer Hölzer berichtet wurde, wird im 2. Teil der Einfluß von Wechselfolgen, die aus Ofentrocknung und Wässerung in Wasser bestehen, auf das mechanische and chemische Verhalten von verschiedenen indischen Holzarten untersucht.
    Additional Material: 5 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/maco.19620130507
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  • 7
    Electronic Resource
    Electronic Resource
    Schwächung des Holzes von Kühltürmen, mögliche Ursachen (1962)
    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 13 (1962), S. 541-543 
    Details
    ISSN: 0947-5117
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Description / Table of Contents: Deterioration of timber in cooling towers. Possible causesTimber in cooling towers is always exposed to exacting working conditions and shows many signs of deterioration. In order to clarify two specific cases of deterioration, the timber of cooling towers (redwood and fir) has been subjected to mechanical tests for loss of mechanical strength whilst the cooling water and circulating water have been analyzed. It was found that alkaline water with iron content causes a marked loss of mechanical strength and that the impregnation of the wood with tar oils has a very great protective effect as it inhibits the corrosion caused by iron nails.
    Notes: Holz, das durchgängig in Kühltürmen harten Betriebsbedingungen ausgesetzt ist, zeigt vielartige Schäden. Zur Aufklärung zweier Schadensfälle wurde das Holz von Kühltürmen (Redwood u. Fichte) mechanisch auf Wertminderung (Steifigkeits-Einbuße) sowie das Kühlwasser und das Umlaufwasser analytisch untersucht. Festgestellt wurde, daß alkalische, eisenhaltige Wässer zu starkem Steifigkeitsverlust (Schwächung) führen und, daß Imprägnieren des Holzes mit Teerölen in hohem Maße zerstörungsschü;tzend wirkt, da dies auf die Korrosion eiserner Nägel inhibierend wirkt.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/maco.19620130905
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  • 8
    Electronic Resource
    Electronic Resource
    Permeation of water vapor through polymeric films (1960)
    New York, NY [u.a.] : Wiley-Blackwell
    Journal of Applied Polymer Science 3 (1960), S. 1-10 
    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 use of gloves made of rubber or synthetically produced copolymers in protective atmosphere enclosures has focused attention upon the permeability of the film as a suspect area for the diffusion of water vapor as a contaminant into the protective gas system. This investigation was carried out to determine the role of the conditions affecting the permeability of glove materials. Particular attention was placed upon the system governing the permeation of water vapor through vinyl, Hycar, and milled and latex neoprene films. The investigation was carried out by a constant pressure technique conforming to Procedure B, ASTM Designation E96-53T. The rate at which water vapor permeates a film was studied in the light of two independent variables: film thickness and water vapor pressure differential across the film. Permeation rate was found to be inversely proportional to thickness to a constant exponent. The variation of permeation rate with vapor pressure drop across a membrane is not as sharply defined as the variation with thickness, but does vary semilogarithmically. It was found that water vapor permeation rate may be mathematically defined in terms of the controlling variables and three constants. The relationship between permeation rate and the independent variables influencing this rate can be expressed as W/tA = KenΔp/xm where W is the weight of water permeating a film of area A area in time t. The film thickness is x, Δp is the difference in partial pressure of water vapor across the film, K is defined as the permeability constant, n is the partial pressure coefficient, and m is a thickness coefficient dependent upon the solution system employed for film manufacture. Characterization of a particular film with respect to its permeability is possible through the use of the permeability constants. The value of the thickness coefficient appears to be dependent upon the solution system empolyed in the manufacture of the film. The exponents of thickness are offered as 1.1 for an organic solvent dispersion system and 0.8 for an aqueous dispersion system. The value of the exponential constant dependent upon the vapor pressure differential and the value of the permeability constant are suggested as dependent upon the schedule of “compounding” and not readily predicable. They appear, however, to be well defined functions and, once determined for a particular composition, may be used to predict the permeability of that material as a function of the water vapor pressure differential across the film.
    Additional Material: 5 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/app.1960.070030701
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  • 9
    Electronic Resource
    Electronic Resource
    Viscosity-concentration relationships in solutions of high polymers (1960)
    New York, NY [u.a.] : Wiley-Blackwell
    Journal of Applied Polymer Science 3 (1960), S. 129-131 
    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: Measurements of the viscosities of a number of polymer-solvent systems have shown that an exponential expression, η = η0e[η]c, is applicable in the Concentration range up to c = 0.13 g./lOO cc. of solvent to within the precision of the experimental measurements. This exponential equat.ion lends itself readily to the determination of the intrinsic viscosity [η] from a single determination of η/η0 and is therefore of great use in determining molecular weights of high polymers from a Houwink-type expression. At higher concentrations, departures from the exponential equation occur, but agreement remains reasonably good up to a con- centration of 1 g./l00 cc. of solvent. The experimental results are compared with those predicted by the exponential expression and with those expected from a Huggins-type equation in which k′ = 0.5, which corresponds to the first two terms of the expanded form of the exponential.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/app.1960.070030801
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  • 10
    Electronic Resource
    Electronic Resource
    Residual unsaturation in polyacrylamide (1960)
    New York, NY [u.a.] : Wiley-Blackwell
    Journal of Applied Polymer Science 3 (1960), S. 126-126 
    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
    Additional Material: 2 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/app.1960.070030720
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