Abstract
Fixman's equation for stress tensor in polymer solutions consists of three terms: the term due to solvent, the term of 1st power of c ( P 1 ) and that of 2nd power of c ( P 2 ) where c is the number concentration. In this paper, it is shown that P 1 is split into two terms, P 1 0 linear in c and P ' 1 quadratic in c . As far as Dirac delta function for excluded volume potential and a special segment distribution function are employed, the sum of P ' 1 and P 2 does not contribute to normal stress functions.
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