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The segment-cloud model of the second virial coefficient of polymer solutions: effects of chain length and branching

✍ Scribed by Santosh K. Gupta; Anil Kumar; P. Tandon

Publisher: Elsevier Science
Year: 1979
Tongue: English
Weight: 289 KB
Volume: 68
Category: Article
ISSN: 0009-2614
DOI: 10.1016/0009-2614(79)80104-9

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✦ Synopsis

The segment-cloud model for polymer moIecuIes has been used, and the second virial coefficient AZ obtained as a function of the interaction parameter = for linear and branched chains having different values of 11. It is observed that the chain length effect, though much smakr than in the perturbation theory, increases as the degree of branching increases. Also. the branching pmmeter g is found to be a better correlating parameter than the segment density distribution for _42_ This is in contnzst to eylier results for the perturbation theory of the excluded rolume_

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