Bioerodible calcium sulfate/poly(β-amino ester) hydrogel composites

Three-dimensional printing fiber reinforced hydrogel composites.

An additive manufacturing process that combines digital modeling and 3D printing was used to prepare fiber reinforced hydrogels in a single-step process. The composite materials were fabricated by selectively pattering a combination of alginate/acrylamide gel precursor solution and an epoxy based UV-curable adhesive (Emax 904 Gel-SC) with an extrusion printer. UV irradiation was used to cure th...

Light-sensitive polypeptide hydrogel and nanorod composites.

Stimuli-responsive hydrogels exhibit structural changes based on changes in local temperature or pH and analytes and are highly valued in fields ranging from controlled drug release to tissue repair and also in microdevices. Hydrogels that respond to external stimuli, such as light or magnetic fields, offer additional advantageswith respect to on-demandand triggered response. With this in mind,...

Toughening vinyl ester matrix composites by tailoring

Microgel, nanogel and hydrogel–hydrogel semi-IPN composites for biomedical applications: synthesis and characterization

Quaternary ammonium salt hydrogels from a cationic monomer, (3-acrylamidopropyl)-trimethylammonium chloride (APTMACl), in a variety sizes such as bulk, microand nanohas been prepared. The synthesis of microand nanogels were carried out in the microenvironment of water-in-oil microemulsions using two types of surfactants, namely, L-αphosphatidylcholine (lecithin) and dioctyl sulfosuccinate sodiu...

Hydrogel-templated growth of large gold nanoparticles: synthesis of thermally responsive hydrogel-nanoparticle composites.

In this paper, we describe a unique strategy for preparing discrete composite nanoparticles consisting of a large gold core (60-150 nm in diameter) surrounded by a thermally responsive nontoxic hydrogel polymer derived from the polymerization of N-isopropylacrylamide (NIPAM) or a mixture of NIPAM and acrylic acid. We synthesize these composite nanoparticles at room temperature by inducing the g...