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Rheological and Morphological Properties of Various Blends Containing Liquid Crystalline Polyesters
Author(s) -
Trinkle Stefan,
Hoffmann Botho,
Kricheldorf Hans R.,
Friedrich Christian
Publication year - 2001
Publication title -
macromolecular chemistry and physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.57
H-Index - 112
eISSN - 1521-3935
pISSN - 1022-1352
DOI - 10.1002/1521-3935(20010301)202:6<814::aid-macp814>3.0.co;2-3
Subject(s) - materials science , polyester , rheology , polymer , polystyrene , thermoplastic , composite material , polymer chemistry , methyl methacrylate , matrix (chemical analysis) , methacrylate , polymer blend , copolymer
This contribution is concerned with the unique rheological properties of blends of liquid crystalline polymers (LCP) dispersed in thermoplastic matrices. The materials under investigation were rigid rod polyesters solution blended with poly( ε ‐caprolactone), polypropene, polystyrene or poly(methyl methacrylate) as matrix polymers. Oscillatory measurements of these melted blends revealed that LCP contents of only 1 wt.‐% cause the dynamic shear moduli to increase at low frequencies by a factor of several magnitudes compared to the neat matrices. The extraordinary effect is primarily governed by a spatial arrangement of the LCP molecules forming a network as shown by microscopy. The different strength of this effect in different matrices is explained by the interaction between matrix and LCP.