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  • 1
    Electronic Resource
    Electronic Resource
    Structure transfer from a polymeric melt to the solid state. Part I: The influence of chain entanglements in linear polyethylene (1991)
    Springer
    Colloid & polymer science 269 (1991), S. 421-432 
    Details
    ISSN: 1435-1536
    Keywords: Melt spinning ; polyethylene ; mechanical properties ; chain entanglements ; network
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract Melt-spinning experiments were carried out at high quenching rates. Mechanical properties (elongation at break, natural draw ratio, and elastic recovery) have been measured. Significant variations of these quantities were observed when extrusion conditions were changed. This has been attributed to different states of the entanglements within the melt, which are directly transferred into the solid state. This intercorrelation between melt and solid-state properties has been substantiated in the case of rapidly cooled samples, where a poor crystallization on one side and a simultaneous good conservation of melt history on the other side are provoked.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00655878
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Structure transfer from a polymeric melt to the solid state. Part II: Dependence on molecular weight (1992)
    Springer
    Colloid & polymer science 270 (1992), S. 331-348 
    Details
    ISSN: 1435-1536
    Keywords: Melt spinning ; polyethylene ; mechanicalproperties ; entanglements ; knots ; molecular weight
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract Melt spinning experiments of polyethylene, using a high quenching rate have been carried out. Molecular weight has been varied. From measurements of the mechanical properties of the monofilaments produced it is concluded that melt history influences the solid state behavior. This is reflected in the hypothesis of a transference of knots, preexisting in the melt into the solid state. Measurements of the elastic recovery allow to offer an interpretation, in which this network of knots does not percolate, until a critical value of the molecular weightM c knot≈105 is surpassed. The possible influence of these knots on the mobile entanglements is discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00655848
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
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