Abstract
Dynami viscosity and dynamic elasticity of the concetrated cellulose acetate solution containing the third components were measured.
The third components added were inorganic salts, such as calcium chloride; organic compounds such as chloroform, carbon tetrachloride, methyl alcohol, glyoxal and ethyl acetate; and high polymer such as polymethyl methacrylate.
Apparatus used was a coaxial double cylinder type rheometer and the measurement was done by forced vibration method.
The results obtained are as follows;
1) The addition of these compounds affects dynamic viscosity and elasticity of the solution remarkably.
2) By three-element Maxwell model, the solution containing glyoxal and ethyl acetate have large τ(=η1/G) in comparison with the blank solution. CaCl2 increases τ a little.
Some couplings are thought to form in these solutions. But CCl4 and polymethyl methacrylate do not change τ so much.
3) The solution with large activation energy for flow has large frequency dependency of dynamic viscosity.
