Sintesis dan Aplikasi Karboksimetil Kitosan sebagai Inhibitor Korosi pada Baja Karbon dalam Air

Abstract

Carboxymethyl chitosan (CMC) was synthesized with different methods by reacting chitosan with monochloroaceticacid in the presence of sodium hydroxide under variation conditions. The above samples were characterized byFourier transform infrared spectroscopy (FTIR) and soluble in water in range of pH. The CMc were soluble in watera wide range of pH and applied as corrosion inhibitor for steel in water. The inhibiting influence of CMC was studiedby potentiodynamic polarization method. It was found thad corrosion rate was dependent on water pH and CMCconcentration. The results show that optimum the inhibition efficiency at pH 5 and 1 ppm concentration CMC, i.e.,77%. The adsorption of used compound on the steel surface obeys modified Langmuir isotherm. Polarizationmeasurement show that the CMC acts essentially as a anodic-type inhibitor.

Dried Clove Leaf as Corrosion Inhibitor for Medium Carbon Steel in Acidic Media

“…The organic inhibitor is rapidly developed, especially using a natural extract that is safe for the environment, biodegradable, and easy to obtain [7]. This organic inhibitor mostly can be extracted from marine invertebrates such as shrimp and crabs [8]. Additionally, it can be obtained from plant parts such as leaf, seed, etc.…”

Characterization and in vitro release study of artesunateloaded microparticles prepared using crosslinked-chitosan and its derivatives

“…Consequently, it can be used to produce microparticles with high levels of stability and low toxicity [5]. Carboxymethyl chitosan, a derivate of chitosan, has recently been developed since it possesses high aqueous solubility, strong gelforming capacity, low toxicity, and high levels of biocompatibility [8].…”