Chitin film and preparation method thereof

Chitin film and preparation method thereof

  • CN 104,710,629 A
  • Filed: 03/30/2015
  • Published: 06/17/2015
  • Est. Priority Date: 03/30/2015
  • Status: Active Application
First Claim
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1. a preparation method for chitin film, is characterized in that:

  • Containing 2 ~ 50 wt% KOH in solvent for use composition, 0 ~ 20 wt% urea, 0 ~ 6 wt% thiocarbamide, 0 ~ 10 wt% LiOH, 0 ~ 20 wt% NaOH, 0 ~ 10 wt% ZnO, 0 ~ 10 wt% polyoxyethylene glycol, surplus is water, is refrigerated to below freezing with solvent compositions under arbitrary temp after being mixed by chitin, then obtains chitin solution above freezing thawing;

    Or after being mixed under arbitrary temp with solvent compositions by chitin, above freezing, less than 0 DEG C continuously stirring is dissolved and is obtained chitin solution;

    Chitin solution is filtered, deaeration, in chitin solution, add linking agent and stir, described linking agent and the mol ratio of chitin are 0 ~ 5;

    1, by chitin solution casting, and immersion obtains chitin wet film lower than solidifying in the peptizer of its gelling temperature, then water-washes away the chemical reagent in chitin wet film, obtain chitin film after drawing-off, drying;

    Described peptizer is water, or is dissolved with the water of monovalent cation, or water-soluble low-viscosity organic liquid, or their mixing liquid.

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