Chain polymer solutions

Tsvetkov, V. and Andreeva, L. Flow and Electric Birefringence in Rigid-Chain Polymer Solutions. Vol. 39, pp. 95-207. 

The numerical coefficients in these equations as well as the numerical constants Av>i in Eq. (32) are given in Table 5. In fact, Eq. (32) approximates the results of direct numerical analysis to within 3% for 0.0015< d< 0.15, N> 0.05, and L/d > 5, the conditions which are fulfilled by most stiff-chain polymer solution systems studied so far. Equation (32) is more accurate at small N than our previous theory [18], in which slightly different empirical equations for c, and cA were proposed. 

A ternary system consisting of two polymer species of the same kind having different molecular weights and a solvent is the simplest case of polydisperse polymer solutions. Therefore, it is a prototype for investigating polydispersity effects on polymer solution properties. In 1978, Abe and Flory [74] studied theoretically the phase behavior in ternary solutions of rodlike polymers using the Flory lattice theory [3], Subsequently, ternary phase diagrams have been measured for several stiff-chain polymer solution systems, and work [6,17] has been done to improve the Abe-Flory theory. 

In order to discuss the rheological properties of stiff-chain polymer solutions, we need an expression for stress. The stress a induced in a homogeneous isotropic or nematic solution by a macroscopic flow was formulated by Doi [114], who used the Kirkwood general theory [116] to show... 

Flow and Electric Birefringence in Rigid-Chain Polymer Solutions... 

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