In this study, the effect of usage additives at different initiator ratios as well fillers types and grain distributions on resin consumption compressive strength polyester matrix composites were investigated. Orthophthalic unsaturated (UP) was used a matrix. The (methyl ethyl ketone peroxide) ratio 1.0%, 1.5%, 2.0% accelerator (cobalt octoate) 1.0% by weight to start polymerization. Silica, ba...

has been studied and the formation of acrolein as a product confirmed by gas chromatography-mass spectrometry. Oxi dation of 4-methylcyclophosphamide generates methyl vinyl ketone. This is interpreted to indicate that the acrolein and methyl vinyl ketone arise from oxidation of position 4 of the ring of cyclophosphamide. The Fenton oxidation of both cyclophosphamide and 4-methylcylophosphamide ...

Gelation kinetics and rheological properties of poly(vinylidene fluoride-co-hexafluoropropylene) [P(VDF-co-HFP)] solutions in methyl-ethyl-ketone 2-heptanone are investigated. Small-angle X-ray scattering measurements indicate that the systems undergo phase separation by a nucleation process. For concentrations between 6 10 wt% copolymer, strain-hardening appears when gels sheared nonlinear reg...