Synthesis of chitosan-acrylic acid/multiwalled carbon nanotubenanocomposite hydrogels and investigation of their rheological behavior

The present work aimed to study the swelling and rheological behavior of chitosan-acrylicacid/multiwalled carbon nanotube (CS-AA/MWCNT) nanocomposite hydrogel (NCH). For this purpose,CS-AA/MWCNT NCH were synthesized by the polymerization of acrylic acid onto the surface ofchitosan/ hydroxyl modified multiwalled carbon nanotube (CS/MWCNT-OH) through free radicalpolymerization mechanism. The successful synthesis of the NCH was verified by Fourier TransformInfrared Spectroscopy (FT-IR). Subsequently, frequency sweep test and swelling measurement wereperformed to observe the mechanical strength and pH sensitivity of the samples, respectively. The resultsshowed that MWCNT incorporated into the polymer matrix significantly affected the mechanicalproperties and swelling ratio’s of the hydrogels.

کلیدواژه ها:

Synthesis of CS-AA/MWCNT ، Nanocomposite hydrogel ، Free radical polymerization ، Multiwalled carbon nanotube ، Chitosan ، Acrylic acid