Rheology pp 417-424 | Cite as

Processing Induced Superstructures in Moulded Amorphous Polymers

  • K. P. Großkurth


Although HOUWINK [1] suggested already in 1936 the existence of colloidal superstructures in amorphous polymers newly developed methods of electron microscopic preparation techniques allow in the recent years for the first time to obtain direct evidence of well defined morphologies in many high polymers. So for example it was possible to show in the case of atactic polystyrene [2], styrene/ acrylonitrile copolymer [3], polyethylene terephthalate [4], poly-carbonate [4] and polymethyl methacrylate [5] that the isotropic and slightly oriented states are characterized by globular network structures; the highly oriented materials posses a line by line structure. Geometrical shape and regularity of the morphology only depend on the degree of molecular orientations, but not on the way producing themselves by varying the hotstretching parameters. Therefore similar relationships can be assumed between morphological changes and processing induced molecular orientations in injection moulded polymers.


Polyethylene Terephthalate Molecular Orientation Line Structure Oriented State Globular Morphology 
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    Houwink, R., Trans. Farad. Soc. 32: 122 (1974)CrossRefGoogle Scholar
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    Großkurth, K.P., Colloid & Polymer Sci. 255: 120 (1977)CrossRefGoogle Scholar
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    Großkurth, K.P., Gummi Asbest Kunststoffe 25: 1159 (1972)Google Scholar
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    Kämpf, G. and H. Orth, J. Macromol. Sci. - Phys. B 11 (2): 151 (1975)CrossRefGoogle Scholar
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    Großkurth, K.P., Progr. Colloid & Polymer Sci. 66: 281 (1979)CrossRefGoogle Scholar
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    Großkurth, K.P., Gummi Asbest Kunststoffe 30: 848 (1977)Google Scholar

Copyright information

© Plenum Press, New York 1980

Authors and Affiliations

  • K. P. Großkurth
    • 1
  1. 1.Institut für Baustoffe, Massivbau und BrandschutzTechnische Universität BraunschweigD-33 BraunschweigFederal Republic of Germany

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