Swelling behavior of pH-sensitive semi-interpenetrating network micro/nano hydrogels composed of poly (vinyl alcohol) and poly (acrylamide-co-potasium acrylayte)

Microgels/nanogels are crosslinked polymeric particles, which can be considered as hydrogels if they are composed of water soluble/swellable polymer chains. In this article, micr/nano-sized interpenetrating polymer network hydrogels based on poly (vinyl alcohol) and poly (acrylamide-co-potassium acrylate) were prepared by the semi-IPN method using micro-emulsion polymerization. The influence of reaction conditions, such as the concentration of PVA, potassium acrylate, crosslinker and acrylamide, on the swelling behavior of these semi-IPNs was investigated in detail.

Keywords:

semi-IPN , micro/nano , PVA , hydrogel , swelling