Electrochemical Synthesis of Chloro-Chitosan

Electrochemical modification of chitosan to synthesize chloride.

Chitosan is extensively used polysaccharide derived from deacetilization of chitin, which is second most abundant biopolymer. Presence of primary amine, primary hydroxyl as well as secondary hydroxyl groups make chitosan very amenable to further fictionalization and modification; consequently, chitosan has been modified in numerous ways which can be broadly classified in physical, chemical and enzymatic modification categories. Owing to extensive application of chitosan in the fields of biomedical, agriculture, water & waste treatment, food & beverages, cosmetics & toiletries and biopharmaceutics there is constant effort to develop new derivatives of chitosan.

Dr. Gary Halada, Professor at Stony Brook University the invention is an electrochemical modification of chitosan to synthesize a novel polymer. The polymer synthesized is chloride form of chitosan, involving an electrochemical process to substitute one or both of hydroxyl group with chlorine. The new molecule is expected to retain its natural biocompatibility and has been found to retain hydrating properties. Substitution of hydroxyl by chlorine is expected to enhance metal chelation and binding properties of chitosan and thus is expected to perform better than original molecule in applications including environmental applications, water filtration etc.

Easy to scale up. Environmentally friendly by limiting use of toxic oxidizing and reducing agent. Easy control over process parameter and hence chemistry. Can be deposited as thin films or patterned structures.

Synthesizing the polymer chloride

PCT Publication No. WO 2013-116619

Prototype is available for testing.

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Electrochemical, Chitosan, Polysaccharide, Functional group

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