The surface of monodisperse silica particles synthesized using the Stober process were coated with a thin layer of polystyrene. Surface charge groups were attached by a grafting polymerization of styrene sulfonate. The resulting highly charged monodisperse silica particles self-assemble into crystalline colloidal arrays (CCA) in deionized water. We polymerized hydroxyethyl methacrylate (HEMA) a...

In connection with an investigation of the staining of intracellular antigens with ferritin-antibody conjugates (1), we required an embedding material which was extensively ionic. Although several hydrophilic embedding materials have been described (cf. reference 2), to our knowledge no satisfactory ionic ones have been reported. We sought to prepare an ionic embedding material by the bulk poly...

Actin exists as a monomer (G-actin) which can be polymerized to filaments) F-actin) that under the influence of actin-binding proteins and polycations bundle and contribute to the formation of the cytoskeleton. Bundled actin from lysed cells increases the viscosity of sputum in lungs of cystic fibrosis patients. The human host defense peptide LL-37 was previously shown to induce actin bundling ...

Poly(vinyl chloride) (PVC) resins constitute the third most important plastic materials available commercially, in terms of worldwide volume production, and can be manufactured through several polymerization mechanisms, including free radical, ionic redox processes. Approximately 80% commercial PVC production is performed suspension processes batch mode, due to intrinsic problems continuous pro...

A hydrogel is a water-insoluble three-dimensional polymer network that has the ability to absorb body fluids in biological environment. Such formed through chemical crosslinking mechanisms such as optical polymerization, enzymatic reactions and physical temperature pH dependent processes ionic crosslinking. Physical hydrogels are weak secondary force by covalent forces. Various polymers of natu...

The solid-phase polymerization synthesis (SPPS) represents one of the most innovative approaches to preparation nano-sized molecularly imprinted polymers. One its main features consists use a solid support on which template molecule is covalently grafted. It implies that imprinting process does not involve target as is, but, rather, structural modification it. known rationally designed mimic N-...

Despite the huge and increasing application of high solids content polymer colloids for coating application, there are few challenges that still limit their full potential. The most emerging one is use surfactants colloidal stabilization affects negatively performance. Moreover, due to particulate nature, waterborne dispersions presents lower mechanical performance with respect solvent-based co...

atom transfer radical polymerization (atrp) of styrene was carried out at 105°c and a monte carlo simulation was employed to model the system. the variations of monomer conversion, the initiator concentration, average molecular weight, and molecular weight distribution were evaluated as the reaction proceeded. according to the results obtained, for similar reaction time, monomer conversion is h...