Abstract
Semi-interpenetrating polymer networks (semi-IPNs) composed of a dicyanate resin and a poly(ether sulfone) (PES) were prepared, and their curing behavior and mechanical properties were investigated. The curing behavior of the dicyanate/PES semi-IPN systems catalyzed by an organic metal salt was analyzed. Differential scanning calorimetry was used to study the curing behavior of the semi-IPN systems. The curing rate of the semi-IPN systems decreased as the PES content increased. An autocatalytic reaction mechanism was used to analyze the curing reaction of the semi-IPN systems. The glass-transition temperature of the semi-IPNs decreased with increasing PES content. The thermal decomposition behavior of the semi-IPNs was investigated. The morphology of the semi-IPNs was investigated with scanning electron microscopy. © 2002 Wiley Periodicals, Inc. J Appl Polym Sci 87: 1079–1084, 2003
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