Abstract
Two types of interpenetrating polymer networks (IPNs) consisting of incompatible poly(acrylonitrile-co-butadiene) (NBR) and poly(methyl methacrylate) (PMMA) as the first and second components, respectively, were prepared: One was semi-IPNs in which only NBR was crosslinked, and the other was full-IPNs in which both NBR and PMMA were crosslinked. Electron micrographs showed heterogeneous and fairly homogeneous structures containing a continuous NBR phase for semi- and full-IPNs, respectively. These structures were compatible with the mechanical properties (viscoelastic properties and stress-strain behavior). The elastic moduli of these IPNs may be predicted by the Davies model which takes particle-particle interactions into account. The difference in the extent of molecular mixing of the two components of the semi- and full-IPNs may be explained by the formation of the microgels of the second component and the crosslinks in each component.
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Adachi, H., Kotaka, T. Structure and Mechanical Properties of Sequential Interpenetrating Polymer Networks III. Poly(acrylonitrile-co-butadiene)/Poly(methyl methacrylate) System. Polym J 15, 285–292 (1983). https://doi.org/10.1295/polymj.15.285
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DOI: https://doi.org/10.1295/polymj.15.285