It has recently been shown that nanoparticle solutions can be used as hydrogel adhesives due to an absorption process of the polymer, poly(dimethylacrylamide) (PDMA) onto the silica particles. The same physical process enables a composite material made by polymerizing dimethylacrylamide in the presence of silica nanoparticles to release stresses by altering its internal structure. In this work, we measure the viscoelastic properties of hydrogel-silica composites using microrheology. We compare two composite materials; one which absorbs to silica (dimethylacrylamide), and one that doesn’t (acrylamide).