Hydrogels based on polyacrylamide, carboxymethylcellulose and silica are composites with good absorption release properties over time, this behavior allow their application in several areas. Thus, the aim of study was to analyze kinetic, spectroscopic, morphological, structural hydrogels prepared using different concentrations (0, 0.5, 2.5%). The results showed that swelling degree reduces incr...

Hydrogel adhesion plays a significant role in many applications. A systematic study of the surface interaction between hydrogels and other surfaces is critical importance. In this study, we carry out indentation tests on polyacrylamide wide range compositions, across contact sizes, over times. Based new model that recently developed for can describe length-dependent adhesion, extract properties...

The hydrogel is a preferred material for flexible wearable sensors. In practical application, it should have high-efficiency mechanical toughness and self-healing performance. Besides, requires good affinity adhesion because of its contact with the skin. this experiment, we made an ultra-tough excellent cell adhesion. We used sodium alginate (SA) polyacrylamide (PAm) mixture as base fluid. Poly...

Stimuli responsive hydrogels may be promising materials for shape transforming structures due to their ability to deform significantly in response to an environmental stimulus without the need for external power. It is well-known that by laminating swelling hydrogels and non-swelling flexible materials, such as inert elastomers, bending actuation can be achieved. In this work, we report an impr...

Hydrogel posts in microfluidic devices were investigated as reaction environments for characterizing protein interactions with the goal of mimicking the complexity of a biological environment. The hydrogel environment can be easily tuned to study specific properties of the biological environment. In this study, the hydrogel pore size was tuned to mimic the effect of confinement/crowding on prot...

INTRODUCTION To assess the effectiveness of polyacrylamide hydrogel (Bulkamid®) in injection therapy for urinary incontinence in women of 80 or more years. MATERIALS AND METHODS Twenty consecutive women mean age 84.5 (range 80-87) with stress or mixed urinary incontinence were enrolled in this prospective study. All subjects were evaluated at baseline and re-evaluated 7 days, 6,12,18 and 24 m...

Smart sensing fabrics are becoming increasingly attractive in the emerging wearable areas of medical and military so far. Here, for first time, we present a smart humidity fabric (SHSF) based on moisture-sensitive polyacrylamide hydrogel respiratory monitoring non-contact sensing. Fabricated by situ cross-linking precursors fibers fabric, flexible SHSF shows excellent sensitivity, outstanding f...