Chitosan physicochemical properties

Chitosan

[Structural formula]

[Physical and chemical properties] As a natural polymer material, chitosan is a deacetylated product of chitin, non-toxic, non-polluting, and has good biocompatibility and degradability.

[Preparation method] Sulfonated oligochitosan (SCS) can be prepared by alkali ring-opening grafting of oligochitosan and sodium 2,3-epoxypropanesulfonate

Example 1 Preparation of carboxymethyl-quaternary ammonium amphoteric chitosan (CMQAC)

Add 3.

Example 22-3 Preparation of carboxyethyl quaternary ammonium amphoteric chitosan (CEQAC)

Add 3.

The static scale inhibition method was used to evaluate the performance of chitosan, carboxymethyl-quaternary ammonium and carboxyethyl-quaternary ammonium amphoteric chitosan in inhibiting calcium sulfate scale

The vial test method was used to determine the sterilization rate of amphoteric chitosan with different quaternary ammonium substitution degrees to heterotrophic bacteria

In summary, carboxymethyl-quaternary ammonium chitosan and carboxyethyl-quaternary ammonium chitosan have excellent calcium sulfate scale inhibition performance, and have a very ideal bactericidal effect on heterotrophic bacteria, which is a promising application.

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