Allylic monomers as reactive plasticizers of polyphenylene oxide. Part II: Cure kinetics

摘要: Abstract As part of an investigation the processing polyphenylene oxide (PPO) with polymerisable plasticizers, curing kinetics various diallylic monomers – diallyl ortho phthalate (DAOP), terephthalate, triethylene glycol ether and diethylene carbonate) triallylic triallyl cyanurate isocyanurate radical initiators differing activity were studied. All exhibited similar cure each initiator exotherm peak temperatures correlated well reactivity as measured by 1 h half-life temperatures. Multiple scan-rate dynamic DSC studies gave activation energies to those obtained from isothermal rheology gelation. The effects presence PPO on (DAOP) studied using dicumyl peroxide (DCP) tert-butyl hydroperoxide (TBHP) behaviour was observed. In PPO:DAOP/DCP system, reaction rate reduced increasing due a dilution effect but heat generally unaffected. However, in PPO:DAOP/TBHP significant increase observed 20 wt.% catalysis TBHP Cu 2+ Co 3+ impurities PPO, slightly content. addition, polymerisation for blends usually less than that pure monomer. This information can be used DAOP plasticizer.