Viscosity properties of fibroin spinning solutions
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The fibrillar proteins of natural silk (fibroin and sericin) are able to form stable spinning solutions in concentrated aqueous solutions of sodium thiocyanate in the presence of isopropyl alcohol.
Spinning solutions of fibrillar proteins are anomalously viscous liquids. With increase in the isopropyl alcohol content of the solution from 2 to 20% by wt., the effective viscosity and surface tension of the solution are reduced, at practical constancy of the temperature dependence of viscous properties.
KeywordsSodium Polymer Alcohol Viscosity Aqueous Solution
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