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Difficult reptation of star‐shaped polystyrenes in their blends with poly(methyl methacrylate)
Author(s) -
Dondos Anastasios,
Christopoulou Vassiliki,
Papanagopoulos Dimitrios
Publication year - 2000
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(20001001)21:15<1086::aid-marc1086>3.0.co;2-q
Subject(s) - reptation , polystyrene , methyl methacrylate , materials science , polymer chemistry , poly(methyl methacrylate) , polymer , mixing (physics) , star (game theory) , phase (matter) , methacrylate , scanning electron microscope , solvent , chemical engineering , polymer science , composite material , chemistry , copolymer , physics , organic chemistry , quantum mechanics , astrophysics , engineering
Films of polystyrene/poly(methyl methacrylate) (PS/PMMA) blends are obtained from solution after evaporation of the solvent. The degree of mixing of the two polymers is studied using scanning electron microscopy after selective elimination of the PS phase. Using star‐shaped instead of linear PS, an important degree of mixing is observed. This must be attributed to difficult reptation of the star‐shaped chains due to the high number of entanglements between star‐shaped PS and PMMA compared to the entanglements between linear PS and PMMA.