Highly reactive thermosets are currently expanding the processability of high-performance structures for transportation industry. The short polymerization time makes it a suitable process to replace metallic with polymer matrix-based composite materials. resin characterization is fundamental step obtain properties and associated constitutive models, which required design optimize manufacturing ...

A quantitative model is presented to describe the formation of volume holograms in a polymeric medium containing photopolymerizable acrylate monomers that undergo spatially modulated gelation as a result of exposure to a visible ‘‘write’’ beam. The model refines the simple diffusion model of Zhao and Mouroulis @J. Mod. Opt. 41, 1929 ~1994!#, by including cure dependence of both the photoreactio...

Owing to their strong Brønsted acidity, organic phosphates and phosphonates are able catalyze dynamic transesterification reactions in hydroxyl ester networks. Compared commonly used catalysts, they highly soluble a wide range of acrylate monomers neither affect cure kinetics nor shelf-life photocurable thiol-acrylate resins. Additionally, promote fast stress relaxation and, by using derivative...

Thiol-ene chemistry was exploited in droplet-based microfluidics to fabricate advanced microcapsules with tunable encapsulation, degradation, and thermal properties. In addition, by utilizing the thiol-ene photopolymerization with tunable cross-link density, we demonstrate the importance of monomer conversion on the retention of omniphilic cargo in double emulsion templated microcapsules. Furth...

Thermosetting polyurethanes were obtained using an aromatic isocyanate and a hydrophobic polyol formulation from epoxidized soybean oil (ESO) crosslinked with glycerin. A systematic DSC analysis of the effect catalyst type, crosslinker concentration, index ESO crystallization on cure kinetics was conducted. The combination stannic at 0.2 wt% glycerin 20 produced governed by autocatalytic heat f...