Abstract
The dynamics of polymer chains, such as (A) n , (A R) n and A(A RA) n′ , where R is the side group, are studied using the bond-fluctuation model in order to investigate the effects of branch points on the dynamics of polymer chains. It is found that the relaxation times T R of the end-to-end vector of linear polymer chains are less than those of chains with side groups, especially for the excluded-volume case. The ratio T R T RO (where T RO is the relaxation time of the linear chain) is almost the same for various chain lengths, and the relaxation times T R . of chains with side groups also obey the scaling law T R − ( n − 1) 2 without excluded volume and T R − ( n − 1) 2.5 with excluded volume for d = 2, where d represents a dimension.
Published Version
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