Synthesis of Rheologically Improved Dual Physical Cross-Linked NetworkGraphene Oxide/Poly(acrylamide-co-acrylic acid) Nanocomposite Hydrogels

In this study, we explored the synthesis methods of hydrogels with the goal of enhancing theirrheological properties. We focused on hydrogels based on an acrylamide-co-acrylic acid copolymer,incorporating graphene oxide nanoparticles and iron metal ions to prepare them for variousapplications. Utilizing an experimental design approach, we first determined the optimal compositionfor synthesizing the base hydrogel without the inclusion of ions and nanoparticles. Subsequently, weinvestigated the effects of incorporating these ions and nanoparticles. Our findings revealed that theaddition of nanoparticles and metal ions reduced the linear rheological behavior range of the hydrogelwhile significantly increasing the storage modulus to ۰.۴۹ MPa and the loss modulus to ۰.۱۲ MPa.Furthermore, these additives shifted the rheological behavior of the hydrogel towards that ofviscoelastic solids. Importantly, the gelling temperature and time were maintained within rangessuitable for medical and pharmaceutical applications

کلیدواژه ها:

Polymer Rheology and Processing ، Hydrogel ، Dual Physical Cross-linked