Premium
Bulk polymerization of methyl methacrylate in crosslinked NBR: The effect of the nature of boundary conditions on phase morphology and dynamic behavior of the final IPN
Author(s) -
Omaraee I. Amiri,
Mohammadi N.
Publication year - 2002
Publication title -
polymer engineering and science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.503
H-Index - 111
eISSN - 1548-2634
pISSN - 0032-3888
DOI - 10.1002/pen.11119
Subject(s) - materials science , morphology (biology) , polymerization , acrylonitrile , methyl methacrylate , phase (matter) , composite material , scanning electron microscope , poly(methyl methacrylate) , polymer , polymer chemistry , chemical engineering , copolymer , organic chemistry , chemistry , genetics , engineering , biology
The influence of the nature of confining walls on morphology development during bulk polymerization of methyl methacrylate in a poly(acrylonitrile‐ran‐butadiene) network was investigated by dynamic mechanical analysis and light and scanning electron microscopy. Some samples polymerized while confined by metallic walls showed broad damping properties between the Tg of the components and, consequently, a microheterogeneous morphology. On the other hand, the same compositions, polymerized while confined by glass walls, showed clear separation into a macroscopic three‐layer structure of poly(methyl methacrylate) film between NBR layers. This suggests that phase separation of polymeric systems under symmetric boundary conditions also depends on the nature of the boundaries.