Preparation and swelling behavior of pH/temperature responsive semi-IPN hydrogel based on carboxymethyl xylan and poly(N-isopropyl acrylamide)

In this study, carboxymethyl xylan was synthesized from wheat straw xylan and then pH/temperature dual-responsive hydrogels based on the carboxymethyl xylan (CMX) and poly(N-isopropylacrylamide) (PNIPAm) were firstly synthesized through semi-interpenetrating polymer network synthetic route. The temperature-responsive behavior was investigated by swelling experiment and DSC test, showing that the CMX content played an important role in the phase...