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  • 1965-1969  (5)
  • 1
    Electronic Resource
    Electronic Resource
    Steam and heat setting of nylon 6 fiber. IV. Relationship between heat setting and swellingThis material appeared in part in Kobunshi Kagaku, 16, 333 (1959). (1965)
    New York, NY [u.a.] : Wiley-Blackwell
    Journal of Applied Polymer Science 9 (1965), S. 31-38 
    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 swelling and dissolution of heat-set nylon 6 fiber in aqueous sulfuric acid were examined. Steam-set fiber having good dyeability swells with much more difficulty than the dry-heat-set and unset fibers. Similar phenomena are seen in the examination of density of nylon 6 fiber subjected to heat setting, and it is found that the resistance to swelling depends on the crystalline region rather than on the amorphous region.
    Additional Material: 7 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/app.1965.070090105
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Investigation of the fine structure of high polymers by the method of deuterium exchange. I. Changes in lateral-order distribution of nylon 6 by heat settingThis material appeared in part in Kobunshi Kagaku, 18, 198 (1961). (1965)
    New York, NY [u.a.] : Wiley-Blackwell
    Journal of Applied Polymer Science 9 (1965), S. 117-128 
    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 lateral-order distribution of nylon 6 was evaluated by deuteration and infrared spectroscopic measurement. Unset, dry-heat-set, and steam-set samples are placed in contact with D2O vapor at various temperatures from 25 to 150°C. After equilibrium of the reaction is attained, they are dried and sealed in a NaCl cell. The ratio of the intensity of N—D to C—H vibration bands in the 3-4 μ region is calculated from the infrared spectra and plotted against temperature of deuteration. The curves obtained show the accessibility of the sample to D2O vapor at various temperatures, and the differential of the curve gives the lateral-order distributions of nylon 6. The lateral-order distribution shows that regions of amorphous and of intermediate order decrease, and regions of higher and crystalline increase on dry heat setting, while regions of intermediate order markedly decrease and amorphous and crystalline regions increase on steam setting. These phenomena suggest that loosening of polymer molecules in the amorphous regions and crystallization are caused by the steam setting.
    Additional Material: 9 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/app.1965.070090112
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Relation between physical structure and dyeability of nylon 6 fibers. II. Relation of dyeability to various processing factors in bulky yarn productionThis material appeared in part in Sen-i Gakkaishi, 17, 916 (1961). (1965)
    New York, NY [u.a.] : Wiley-Blackwell
    Journal of Applied Polymer Science 9 (1965), S. 139-149 
    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 effects of tension, number of twists, and heat setting temperature on dyeing properties and the degree of crystallinity of nylon are examined. The amount of dyestuff adsorbed on stretch nylon decreases with tension but is not affected by number of twist, while the density is affected by neither of the above factors. The degree of twist fixing, crystallinity, and the amount of absorbed dyestuff increase with setting temperature. Factors such as setting temperature and tension are the main causes of uneven dyeing. To help in achieving level dyeing in industrial applications dyestuffs are classified according to their sensitivity to uneven stretch nylon 6 hosiery.
    Additional Material: 10 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/app.1965.070090114
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    Steam and heat setting of nylon 6 fiber. III. Changes in viscosity and amino and carboxyl endgroups by heat settingThis material appeared in part in Kobunshi Kagaku, 16, 321 (1959). (1965)
    New York, NY [u.a.] : Wiley-Blackwell
    Journal of Applied Polymer Science 9 (1965), S. 25-29 
    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 relative viscosity and amino and carboxyl endgroup contents for unset, dry-heat-set, and steam-set nylon 6 fiber were determined. The results for the heat-set fibers are almost the same as those for the unset fibers. Therefore, it is difficult to explain the increase of dye uptake in steam setting on the basis of hydrolysis of nylon molecules. The differences in amino endgroup contents as determined by the p-toluenesulfonic acid and 2,4-dinitrofluorobenzene methods indicate that 20-30% of the amino groups might be occluded in the crystalline regions after steam setting.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/app.1965.070090104
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    Paper (German National Licenses)
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  • 5
    Electronic Resource
    Electronic Resource
    Steam and heat setting of nylon 6 fiber. VI. Water adsorption on nylon 6 fiberThis material appeared in part in Kobunshi Kagaku, 17, 417 (1960). (1965)
    New York, NY [u.a.] : Wiley-Blackwell
    Journal of Applied Polymer Science 9 (1965), S. 45-54 
    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: Water adsorption of nylon 6 fibers subjected to various heat-setting treatments was measured over the range of 0-80% R.H. with a quartz balance, and the water adsorbed on the first layer (vm) was calculated. The value of vm was largest for unset fiber, intermediate for steam-set fiber, and the smallest for dry-heat-set fiber. The inner surface areas in nylon calculated from vm are 4-5 × 105 cm.2/g. The value obtained by dividing vm by the amorphous fraction (1 - α) of heat-set fibers appears to be related to the number of intermolecular bonds per unit volume of the amorphous region. The smaller values of vm thus obtained for the dry-heat-set fibers indicate that polymer molecules in the amorphous region form many intermolecular bonds and are more closely packed than those in the unset and steam-set fibers.
    Additional Material: 8 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/app.1965.070090107
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    Paper (German National Licenses)
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