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  • Polymer and Materials Science  (7)
  • 1960-1964  (7)
Collection
Keywords
Publisher
Years
Year
  • 1
    Electronic Resource
    Electronic Resource
    Recent developments in high-temperature adhesives (1962)
    New York, NY [u.a.] : Wiley-Blackwell
    Journal of Applied Polymer Science 6 (1962), S. 184-192 
    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: (1) The prognosis for adhesives uieful up to an hour at 1000°F., in air, is good. (2) Organic adhesives based on phenolic and silicone-phenolic resins are more capable than expected of usefulness at 1000°F. (3) Preparation of semiinorganic adhesives by reaction of heat stable organic polymers with inorganic reagents is feasible. (4) The prospect appears excellent for the achievement of adhesives to be used for 1000 hr. at 500°F., in air, on steel. (5) Despite research on 2000°F. adhesives, effort is still urgently needed on materials for use at lower temperatures. (6) Perhaps the area with the most serious shortage of information and research is the development and testing of adhesives for use at 180-500°F. for periods of three to five years. Both military and civilian agencies are planning the construction of supersonic transports which need such structural adhesives.
    Additional Material: 11 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/app.1962.070062011
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  • 2
    Electronic Resource
    Electronic Resource
    The effects of sodium salts on the additive in viscose regeneration process (1961)
    New York, NY [u.a.] : Wiley-Blackwell
    Journal of Applied Polymer Science 5 (1961), S. 491-492 
    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: Various chemical additives are commonly used in viscose to reduce the swelling of the resultant fibers and films. It was found that inorganic sodium salts, introduced into the additive-containing viscose, alter the action of the additive. The following salts, listed in order of the values of gel swelling ratios obtained with them, interfere with the deswelling of the viscose during regeneration: citrate 〉 thiosulfate 〉 tartrate 〉 sulfate 〉 chloride = phosphate = thiocyanate 〉 acetate 〉 nitrate 〉 control. Sodium idodide did not affect the usual deswelling of the films, and sodium sulfide and sodium carbonate caused the films to deswell slightly more than the control sample. It was proposed that the effectiveness of the salts follows a Hofmeister or lyotropic series.
    Additional Material: 1 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/app.1961.070051616
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  • 3
    Electronic Resource
    Electronic Resource
    Improved dyeability of polyacrylonitrile fibers by radiation grafting with vinylpyrrolidone (1961)
    New York, NY [u.a.] : Wiley-Blackwell
    Journal of Applied Polymer Science 5 (1961), S. 606-611 
    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: X-ray, γ-ray, and electron irradiations are used to graft vinylpyrrolidone, a dye acceptor molecule, to a synthetic fiber, polyacrylonitrile. Two processes are described. In one, doses of 10-60 krad are given to the polymer--aqueous monomer system at dose rates of 3-27 krad/min. In the other process, 0.2-3.0 Mrad is given the system at 0.5-90 Mrad/sec., followed by a heat treatment to elongate the graft side chain. Oxygen inhibits the grafting and various inorganic salts such as sulfates and phosphates enhance the grafting.
    Additional Material: 9 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/app.1961.070051716
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  • 4
    Electronic Resource
    Electronic Resource
    Formation of ketene-imine in acrylonitrile polymerization (1962)
    Hoboken, NJ : Wiley-Blackwell
    Journal of Polymer Science 62 (1962), S. S100 
    Details
    ISSN: 0022-3832
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/pol.1962.1206217438
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  • 5
    Electronic Resource
    Electronic Resource
    Isomorphous replacement in a copolyamide system (1961)
    Hoboken, NJ : Wiley-Blackwell
    Journal of Polymer Science 49 (1961), S. 241-246 
    Details
    ISSN: 0022-3832
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Notes: In a study of isomorphic behavior, it was found that the melting point - composition curve of the copolyamides prepared from caprolactam and p-aminomethylcyclohexylcarboxylic acid was sigmoidal, indicating that the methylcyclohexyl group was interchangeable in the crystal lattice with aliphatic carbon atoms of ω-aminocaproic acid. On the other hand, the benzyl group in the copolymers of caprolactam and p-aminomethylbenzoic acid did not interchange as well, and only partial isomorphism occurred. The analogous meta derivatives, m-aminomethylcyclohexylcarboxylic acid and m-aminomethylbenzoic acid, did not fulfill the spatial requirements of caprolactam. Although V-shaped melting point - composition curves resulted, the disturbance in the crystal network was more severe with the m-phenyl derivative than with the m-cyclohexyl derivative.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/pol.1961.1204915207
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  • 6
    Electronic Resource
    Electronic Resource
    Polybenzimidazoles. I. Reaction mechanism and kineticsPaper presented at the 145th Meeting of the American Chemical Society, New York, N. Y., September 1963. (1964)
    New York : Wiley-Blackwell
    Journal of Polymer Science Part A: General Papers 2 (1964), S. 4795-4808 
    Details
    ISSN: 0449-2951
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Notes: Poly-2,2′-(m-phenylene)-5,5′-bibenzimidazole forms, via two or three intermediates, when 3,3′-diaminobenzidine and diphenyl isophthalate are condensed. Kinetic data indicate rapid consumption of 3,3′-diaminobenzidine to form an aldol type intermediate which evolves water to form a Schiff base which in turn evolves phenol to form the final polymer. Phenol evolution is the rate-determining step. The postulated Schiff base can possess stereoisomerism. Intramolecular hydrogen bonding which can occur in the syn-isomer offers an explanation why the condensation affords a linear polymer. The combined effects of intramolecular hydrogen bonding and added resonance stabilization in the Schiff base are possible reasons why phenol evolution is the rate-determining step and why the condensation requires high reaction temperatures.
    Additional Material: 6 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/pol.1964.100021110
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  • 7
    Electronic Resource
    Electronic Resource
    Relation of the critical surface tension of polymers to adhesion (1964)
    New York : Wiley-Blackwell
    Journal of Polymer Science Part B: Polymer Letters 2 (1964), S. 915-919 
    Details
    ISSN: 0449-2986
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/pol.1964.110020918
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