Cationic active centers possess mobility through reactive diffusion and lead to polymerization in unilluminated regions (shadow cure). Shadow cure may allow effective photopolymerization in optically thick and pigmented systems or for systems in which areas are effectively masked from the illumination source, expanding potential applications for photopolymerization. The cover image, provided by Sage Schissel, demonstrates the potential for shadow-cure growth in complex geometries. Here, the sample was only exposed to initiating light in a central 6 mm-diameter, circular exposure area. Over time, cationic active centers diffused symmetrically into unilluminated areas of the mold, polymerizing the complete 25 mm-diameter star shape. DOI: 10.1002/app.48290

Cationic active centers possess mobility through reactive diffusion and lead to polymerization in unilluminated regions (shadow cure). Here, the sample was only exposed to initiating light in a central 6 mm-diameter, circular exposure area. Over time, cationic active centers diffused symmetrically into unilluminated areas of the mold, polymerizing the complete 25 mm-diameter star shape.

Porous fabric-hydrogel composite membranes (PFHCMs) with enhanced nitrite ion (NO₃⁻) permeability are developed by using three porogens: water-soluble macromolecules, surfactant micelles, and CaCO₃ microparticles. The PFHCMs prepared with surfactant micelles exhibit the most regular, uniform, and interconnected microporous morphology and provide the higher NO₃⁻ permeability coefficient than the fabric-hydrogel composite membranes and commercial cellulose acetate membranes.

Carboxymerthylation effect on the FAX gelation

Schematic of membrane surface containing artificial bisamide molecules

The Graph of Polypropylene Filled with Different Concentrations of Colorful Nano-silica.

Morphology of WEEE composites

Microstructure and strength variations versus resin viscosity.

Elevated temperature releases residual stresses and thereby reducing the tensile stiffness.

Variation of the effective activation energy, E(x(t)), for pure PLA and PLA/ YVO4 nanocomposites on average temperature.