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Morphological Stability of Poly(propylene) Nanocomposites
Author(s) -
Reichert Peter,
Hoffmann Botho,
Bock Thorsten,
Thomann Ralf,
Mülhaupt Rolf,
Friedrich Christian
Publication year - 2001
Publication title -
macromolecular rapid communications
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.348
H-Index - 154
eISSN - 1521-3927
pISSN - 1022-1336
DOI - 10.1002/1521-3927(20010401)22:7<519::aid-marc519>3.0.co;2-w
Subject(s) - materials science , rheology , silicate , exfoliation joint , extrusion , nanocomposite , maleic anhydride , copolymer , annealing (glass) , composite material , morphology (biology) , polymer , chemical engineering , polymer chemistry , nanotechnology , biology , engineering , genetics , graphene
Poly(propylene) compounds containing organophilic layered nanosilicates were prepared by means of melt extrusion at 210°C in order to investigate the influence of maleic anhydride‐grafted poly(propylene) (PP‐g‐MA) as a compatibilizer on morphology development and rheological properties. It was found that the addition of PP‐g‐MA leads to the strong exfoliation of silicate layers within the matrix as investigated by WAXS. This process is associated with the build up of an unstable morphology as probed by dynamic rheology and with the violation of the time‐temperature superposition principle. Annealing of the samples at extrusion temperature level leads to a coarsening of the silicate superstructure and further improvement of the exfoliation at the same time. This process results in a stable morphology with unique rheological properties indicating network‐like superstructure of silicate layers.