Review on Properties of blend PVA/Go hydrogel and PVA/PVP

PVA hydrogels due to their good biocompatibility and high elastic modulus and low toxicity and water absorption abilities are good alternative for articular cartilage replacement and contact lens [1-3]. Using Pure PVA Hydrogels as cartilage have problems such as poor mechanical properties [3] to solve this problem they added reinforcement like clays or minerals [1] In this review article we investigate by adding GO, PVP to PVA hydrogel how the properties changed and was similar to cartilage. In GO/PVA hydrogel composite a 132% increase in tensile strength and a 36% improvement of compressive strength were achieved with the addition of 0.8 wt.% of GO. [3] PVP/PVA hydrogels with 1 wt. % PVP had the best mechanical properties [2]