… delivery is still a virgin area of study. Hence the current … the new chitosan based hydrogel
system for oral drug delivery to the … of chitosan based interpolymeric pH responsive hydrogels …

… Our present work describes suitable and efficient new hydrogel formulation for drug delivery
… interpolymeric hydrogels of chitosan, N-vinyl pyrrolidone, and polyethylene glycol acrylate. …

… While studying the pH-sensitive semi-IPN of chitosan and … during the formulation of
hydrogel-based drug products are … Moreover, a high level of in vitro–in vivo correlation in their …

… The in vitro equilibrium swelling behavior in different buffer solutions of pH … to prepare pH
responsive, hydrophobically modified, biocompatible and biodegradable hydrogels of chitosan…

… Also, pH-responsive hydrogels based on N-vinyl pyrrolidone, … preparation of poly (N-vinyl-2-pyrrolidone-polyethylene …
chloride and chitosan through interpolymeric ionic interactions. …

… Chitosan hydrogels provide pH-responsive release profile by … property of prepared IPN
hydrogel was evaluated by in vitro … develop IPN hydrogels for oral-controlled drug delivery to the …

… on temperature and pH responsive polymer systems and … control, but also easily applicable
both in vitro and in vivo. For … They also suggested that chitosan/polyol salt combinations …

… pH-responsive hydrogels based on N-… interpolymeric poly(NVP-PAC)- chitosan hydrogels
were swollen more in simulated gastric fluid (SGF) than in intestinal fluid. The in-vitro release …

… | Mucoadhesion and in vitro 2007 chitosan release studies. … (2008a) reported pH
responsive and temperature responsive … time of the interpolymeric complexes was significantly …

… , poly[N-vinyl-2-pyrrolidone-polyethylene glycol diacrylate]-… ]-chitosan interpolymeric
pH-responsive hydrogels for oral … ; Harding, DRK Preparation and in vitro evaluation of …