Among the methods available to reduce water production, injecting a gelling system composed of a polymer and a crosslinker has been widely used. In this work, a hydrogel was prepared by crosslinking of an aqueous solution containing hexamethylenetetramine (HMTA) as crosslinker, hydrochloric acid (HCl) as an activator, and the co-polymer of 2-acrylamido-2methyl-propanesulfonic-acid sodium salt (...

Simple gel formulations may be applied to enhance the systemic and local exposure of potential compounds. The aim of this thesis is the development and characterization of controlled release formulations based on thermoreversible poloxamer gels, which are suitable for novel drug delivery applications. In particular co-solvents (DMSO, ethanol), mucoadhesive polymers (chitosan, alginate) and salt...

-Gelation and precipitation are two possible outcomes for the polymerization of monomers dissolved in a solvent. Gelation is obtained when the polymers

Electrolytes are characterized by their ionic conductivity (σ(i)). It is desirable that overall σ(i) results from the dominant contribution of the ions of interest (e.g. Li(+) in lithium ion batteries or LIB). However, high values of cationic transference number (t+) achieved by solid or gel electrolytes have resulted in low σ(i) leading to inferior cell performances. Here we present an organog...

Studies on the functionality of muscle proteins in gelation mechanisms of structured meat products during the last three decades are briefly reviewed. Among muscle proteins, myosin is primarily the most important protein for gelation, whereas actin plays a complementary role in gelation when it coexists with myosin. The combined data of gelation and denaturation indicate that the gelation of my...

PURPOSE An in situ forming hydrogel was evaluated as a potential vitreous substitute in rabbits. METHODS The hydrogel used a disulfide cross-linker that was then reduced to produce an injectable thiol-containing polymer solution. The disulfide cross-links reformed by air oxidation of the thiols and produced a stable hydrogel once inside the eye. The polymer was clear, autoclavable, and could ...