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  • Polymer and Materials Science  (14)
  • Earth Resources and Remote Sensing
  • 1965-1969  (11)
  • 1960-1964  (3)
  • 1
    Electronic Resource
    Electronic Resource
    Aromatic imide polymers for high-temperature adhesives (1968)
    New York, NY [u.a.] : Wiley-Blackwell
    Journal of Applied Polymer Science 12 (1968), S. 805-829 
    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: During the past decade the aerospace industry has sought materials for bonding stainless-steel and titanium alloys that have a high degree of thermal and oxidative stability. The Air Force Materials Laboratory has anticipated these requirements and sponsored many development programs aimed at achieving these goals. This paper describes the results of one such program devoted to development of high-temperature adhesives from aromatic imide polymers. The family of polymeric materials known as aromatic polyimides possess excellent thermal and oxidative resistance at temperatures up to 650°F. Mechanical and electrical properties of glass-fiber-reinforced laminates prepared with these polymers have been reported. This work has been extended to the development of structural adhesives that will withstand long-time exposure in air at 600°F. Stainless steel and titanium have been successfully bonded with adhesives made from aromatic imide and benzimidazole imide polymers. Bonds made with stainless steel have retained approximately 80% of their original strength at 600°F. after 1000 hr. of aging at 600°F. Adhesives made with benzimidazole imide polymers are the prepared materials for bonding titanium. Initial bond strengths of 1300 psi have been measured at 600°F. After 1000 hr. at 600°F. the bond strengths drop to 800 psi. The processing conditions for making a bond are quite moderate, except that a high temperature is required. The preparation and processing conditions associated with these adhesives are described. A large number of aromatic imide and amide-imide polymers have been prepared and adhesives formulated. By comparing the bond strengths obtained with these adhesives it is possible to deduce the effect of molecular weight and various molecular components on bond strength.
    Additional Material: 9 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/app.1968.070120417
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  • 2
    Electronic Resource
    Electronic Resource
    Phenolic resins. A. A. K. Whitehouse, E. G. K. Pritchett, and G. Barnett, Iliffe Books Ltd., London; American Elsevier, New York, 1968. 143 pp. (1969)
    New York : Wiley-Blackwell
    Journal of Polymer Science Part A-2: Polymer Physics 7 (1969), S. 2139-2140 
    Details
    ISSN: 0449-2978
    Keywords: Physics ; 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.1969.160071213
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  • 3
    Electronic Resource
    Electronic Resource
    Phenolic resins. By A. A. K. Whitehouse, E. G. K. Pritcreit, and G. Barneivt. Published for the plastics institute by Iliffe Books Ltd., London, and by American Elsevier Publishing Co., New York, 1968 (1969)
    New York, NY [u.a.] : Wiley-Blackwell
    Journal of Applied Polymer Science 13 (1969), S. 1323-1324 
    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.1969.070130620
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  • 4
    Electronic Resource
    Electronic Resource
    Fiber melt extrusion: Deviations from steady-state behavior in the spin linePaper presented at the Spring 1963 meeting of the Fiber Society, Charlottesville, Va., May 10, 1963. (1964)
    New York, NY [u.a.] : Wiley-Blackwell
    Journal of Applied Polymer Science 8 (1964), S. 2389-2398 
    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 occurrence of nonsteady-state conditions in the melt extrusion of fibers is described. Data obtained from cinephotographs are presented which indicate that the spin line diameter at a fixed point in space can have wide fluctuations dependent upon spinning parameters. It is postulated that the interaction of an elastic bulge and variable spin line tension due to a melt inhomogeneity may be responsible for the effect. Some evidence for melt inhomogeneity is presented to demonstrate the existence of domains having flow properties different from the main mass of polymer melt.
    Additional Material: 11 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/app.1964.070080529
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  • 5
    Electronic Resource
    Electronic Resource
    Surgical suture-canine tissue interaction for six common suture types (1968)
    Hoboken, NJ : Wiley-Blackwell
    Journal of Biomedical Materials Research 2 (1968), S. 215-230 
    Details
    ISSN: 0021-9304
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Medicine , Technology
    Notes: Maximum extraction stress and integrated extraction work were measured for sutures implanted for 3, 7, and 14 day periods. Six common non-absorbable sutures, representative of braided and monofilamentary forms, were implanted subdermally and were used for cutaneous incision closure with purebred pointer dogs. The data show: (1) Braided sutures, polyester/Teflon, silk-type B, and silk-silicone interacted with peripheral tissue to a significantly greater degree than the monofilamentary types, nylon, polypropylene, and polyethylene; (2) polyester-Teflon braided suture interacted to a lesser degree than the other braided sutures; (3) the relatively intense interaction of plain silk and silicone-treated silk appears to reflect the combined effects of mechanical aspects of braiding and of biochemical response; and (4) all braided sutures swelled over the implantation periods with as much as a 70% increase in diameter after 14 days for silk.
    Additional Material: 13 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jbm.820020205
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  • 6
    Electronic Resource
    Electronic Resource
    Surgical suture-porcine subcuticular tissue interaction (1969)
    Hoboken, NJ : Wiley-Blackwell
    Journal of Biomedical Materials Research 3 (1969), S. 383-402 
    Details
    ISSN: 0021-9304
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Medicine , Technology
    Notes: In this study tissue-suture interaction was evaluated in terms of instantaneous stress and total work at withdrawal, histological response, and photomicrographic suture appearance. Porcine subjects and subcuticular incision closures identical to those of clinical plastic surgery were used; implant periods were 1, 2, and 3 weeks. Monofilamentary sutures (4-0) of nylon, linear polyethylene, polypropylene, and Teflon FEP were used; stainless steel and braided siliconized silk were included for comparison. Perisutural sleeves, formed by ingrowth of epithelium up to 1 cm from the loci of emergence of the suture through epidermis, were found to account for 70-85% of withdrawal work. The subcutaneous closure is superior to interrupted or running stitches in minimizing these “end effects” and attendant exacerbation of tissue-suture interaction. The degree of the latter combined with consideration of suture strength, suppleness, and knot durability indicate that nylon and Teflon FEP monofilaments are sutures of choice for cutaneous closure.
    Additional Material: 14 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jbm.820030216
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  • 7
    Electronic Resource
    Electronic Resource
    The kinetics of the thermal degradation of polystyrene and polyethylene (1961)
    Hoboken, NJ : Wiley-Blackwell
    Journal of Polymer Science 54 (1961), S. 253-260 
    Details
    ISSN: 0022-3832
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Notes: The nonisothermal method of Freeman and Carroll is used to investigate the kinetics of the thermal degradation of polyethylene and polystyrene. The reactions were studied thermogravimetrically under a vacuum of 1 mm Hg. Decomposition appears to occur in stages. The rate parameters were determined for each region of reaction. Mechanisms of degradation are suggested. The results of this investigation are compared with the kinetic parameters reported by other investigators for the decompostion of these polymers.
    Additional Material: 8 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/pol.1961.1205415920
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  • 8
    Electronic Resource
    Electronic Resource
    Cryodegradation of polyelectrolyte networks (1969)
    New York : Wiley-Blackwell
    Journal of Polymer Science Part B: Polymer Letters 7 (1969), S. 609-612 
    Details
    ISSN: 0449-2986
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Additional Material: 2 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/pol.1969.110070809
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  • 9
    Electronic Resource
    Electronic Resource
    Studies of variations in the properties of ion-exchange resin particles (1965)
    New York : Wiley-Blackwell
    Journal of Polymer Science Part A: General Papers 3 (1965), S. 2893-2902 
    Details
    ISSN: 0449-2951
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Notes: Measurements of the swelling ratio and exchange capacity of individual ion-exchange resin beads are used to compare resin samples, to study interparticle differences, and to help characterize resin degradation. Heterogeneous resin samples were found, along with those of apparent homogeneity. In one extreme case of the former, inert particle cores were found.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/pol.1965.100030816
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  • 10
    Electronic Resource
    Electronic Resource
    Molecular weight of poly(vinyl chloride) (1964)
    New York : Wiley-Blackwell
    Journal of Polymer Science Part A: General Papers 2 (1964), S. 2017-2024 
    Details
    ISSN: 0449-2951
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Notes: A number of fractionated and unfractionated poly(vinyl chlorides) have been characterized by light scattering, osmometry, and solution viscometry. From the results on fractions it is concluded that the larger molecules contain long branches. For linear fractions the relation between intrinsic viscosity in tetrahydrofuran at 25°C. and weightaverage molecular weight measured by light scattering is: [η] = 1.63 × 10-4Mw0.766 dl./g.
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/pol.1964.100020501
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