The Compositional Effect of Water-Soluble POSS Hybrid PNIPA Nanocomposite Hydrogels

The nanosized water-soluble Oa-POSS particles were added into the PNIPA hydrogels by in situ radical polymerization as a reinforce agent. The mechanical properties are determined by the composition of gels. With the increase of Oa-POSS, the tensile and compression strength is enhanced significantly, while, the elongation at break is still low. The increased BIS, related to the tighter network structure, results in better compression strength, but the tensile properties is not improved obviously.