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Recent advances in interpenetrating polymer networks
Author(s) -
Frisch K. C.,
Klempner D.,
Frisch H. L.
Publication year - 1982
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.760221715
Subject(s) - materials science , polyurethane , copolymer , polymer , epoxy , adhesive , polymerization , polyester , composite material , interpenetrating polymer network , grafting , acrylic polymer , polymer chemistry , kinetics , polymer science , monomer , physics , layer (electronics) , quantum mechanics
We review the synthesis, morphology, and physical and mechanical properties of IFNs as well as the related pseudo‐IPNs, in which only one of the polymers is crossliriked. Recent studies have shown that the degree of phase separation achieved in these materials is strongly dependent on the compatibility of blends of the linear polymer constituents of the IPN components as well as the kinetics of chain extension and the presence of grafting between component polymers. We illustrate this by a series of IPNs consisting of a polyurethane and an acrylic copolymer. The acrylic is a typical automotive enamel. An enhancement in properties results, which is dependent on the amount of grafting and the kinetics of polymerization. Also discussed are IPNs of a polyurethane and an epoxy, which exhibit a synergism in adhesive properties, and IPNs of a RIM polyurethane with several epoxies and unsaturated polyesters. In addition, also reported are the preliminary studies on the first successful preparation of a three‐component IPN, consisting of a polyurethane, an epoxy, and an acrylic.