De. Kranbuehl et Ph. Verdier, STRETCHED EXPONENTIAL RELAXATION BEHAVIOR OF OFF-LATTICE POLYMER-CHAINS, Journal of non-crystalline solids, 172, 1994, pp. 996-1000
The effects of both chain connectivity and excluded volume on the dyna
mical behavior of polymer chain; have been simulated. An off-lattice 6
3- and 99-bead Monte Carlo simulation model was used which permits a w
ide range of angular geometries and rotational angles. The relaxation
behavior of the end-to-end vector was fitted about equally well by sim
ple exponentials a exp(-t/tau(1)) and stretched exponentials exp(-(t/t
au)(1-n)) for all the intramolecular effects simulated. Chain connect
ivity and excluded volume significantly increase tau, while the expon
ent 1-n seems rather insensitive to the presence or absence of these i
ntramolecular interactions.