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The effect of mixing time on the morphology and physical properties of liquid crystalline polymer based blends
Author(s) -
Zaldua Ane M.,
Muñoz M. Eugenia,
Peña Juan J.,
Santamaría Anton
Publication year - 1995
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/marc.1995.030160603
Subject(s) - thermotropic crystal , rheology , materials science , viscoelasticity , mixing (physics) , viscosity , polymer , glass transition , polymer blend , phase (matter) , thermal , morphology (biology) , composite material , polymer chemistry , liquid crystalline , copolymer , thermodynamics , chemistry , organic chemistry , physics , genetics , quantum mechanics , biology
Rheological and thermal analysis results of blends of a thermotropic copolyesteramide and polyarylate of bisphenol A depend on the thermo‐mechanical treatment during mixing. The changes observed as mixing time increases are the following: (a) melt viscosity and loss factor increase, (b) glass transition temperature decreases. The morphological analysis of the blends shows the inability of the treated blends to form an oriented liquid crystalline polymer (LCP) phase, which explains the observed viscoelastic properties.