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Dependence of the Morphology Development on the Kinetics of Reactive Melt Blending of Immiscible Polymers
Author(s) -
Yin Z,
Koulic C,
Pagnoulle C,
Jérôme R
Publication year - 2002
Publication title -
the canadian journal of chemical engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.404
H-Index - 67
eISSN - 1939-019X
pISSN - 0008-4034
DOI - 10.1002/cjce.5450800605
Subject(s) - isocyanate , methyl methacrylate , polystyrene , polymer chemistry , kinetics , copolymer , polymer , materials science , morphology (biology) , phase (matter) , amine gas treating , anthracene , reactive extrusion , chemical engineering , polymer blend , chemistry , photochemistry , organic chemistry , composite material , polyurethane , physics , quantum mechanics , biology , engineering , genetics
Poly(methyl methacrylate) (PMMA) containing 50 wt% of anthracene (anth) labeled reactive PMMA chains [thus end‐capped by an anhydride (anh) or an isocyanate (NCO)] has been melt blended with polystyrene containing 33 wt% of chains end‐capped by an aliphatic amine (PS‐NH 2 ) at 180°C. Conversion of anth‐PMMA‐anh and anth‐PMMA‐NCO into PMMA‐ b ‐PS copolymers has been determined by SEC with a UV detector. The interfacial reaction mainly occurs in the initial mixing stage (⩽1.0 min), although at a rate which depends on the reactive groups attached to PMMA. Moreover, this interfacial reaction rate controls how the phase morphology is developed.