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Intersubunit excluded volume

If the energy of interaction of two mers is more favorable than the interaction of a solvent molecule and a mer, the potential of mean force for weak overlap of two subchains will be negative. The value of the excluded volume will depend on the temperature through the denominator in the exponential term of Equation 5.3. It is possible to have positive excluded volumes in one range of temperature and negative excluded volumes in a different range. The intersubunit excluded volume vanishes at a particular temperature. Because the potential of mean force depends on both the polymer and the solvent, it is even possible to observe more than one temperature at which = 0. The existence of a compensation point where the intersubunit... [Pg.46]

The potential is a Gaussian with range determined by the mean-squared radius of gyrahon and strength determined by the intersubunit excluded volume and the square of the number of subchains. Direct evaluation of the integral (Equation 5.21) then leads to the lowest-order soluhon for the second virial coefficient ... [Pg.52]

See other pages where Intersubunit excluded volume is mentioned: [Pg.46]    [Pg.52]    [Pg.46]    [Pg.52]    [Pg.46]   
See also in sourсe #XX -- [ Pg.46 , Pg.52 ]



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