J. Phys. II France
Volume 3, Numéro 8, August 1993
|Page(s)||1171 - 1177|
J. Phys. II France 3 (1993) 1171-1177
Remarks on the dynamics of random copolymersJ.P. Bouchaud and M.E. Cates
TCM Group, Cavendish Laboratory, Madingley Road, Cambrdige CB3 0HE, U.K.
(Received 7 May 1993, accepted 15 June 1993)
We discuss the dynamics of random AB copolymers, and show that a glassy, quasi-frozen phase is reached as soon as (where N is the number of monomers, the entanglement length and the Flory interaction parameter). This criterion is satisfied for much smaller than the value for which segregation occurs: . The relaxation time of weakly disordered chains is furthermore found to take the empirical form , where can reach significant values for certain choices of and the fraction of B-monomers.
64.60C - 05.40
© Les Editions de Physique 1993