https://doi.org/10.1007/s100510050660
Influence of hydrodynamics on the dynamics of a homopolymer
Service de Physique Théorique, CEA Saclay, 91191 Gif-sur-Yvette Cedex, France
Received:
10
March
1998
Revised:
15
September
1998
Accepted:
25
September
1998
Published online: 15 February 1999
We present an analytical approach of the dynamics of a polymer
when it is quenched from a θ solvent into a good
or bad solvent. The dynamics is studied
by means of a Langevin equation, first in the absence
of hydrodynamic effect, then taking into account
the hydrodynamic interactions with the solvent.
The variation of the radius of gyration is studied
as a function of time.
In both cases, for the first stage of collapse
or swelling, the evolution is described by a power law
with a characteristic time proportional to
(N), where
N is the number of
monomers, without (with)
hydrodynamic interactions.
At larger times, scaling laws are derived
for the diffusive relaxation time.
PACS: 75.10.Nr – Spin-glass and other random models / 64.70.Pf – Glass transitions / 71.55.Jv – Disordered structures; amorphous and glassy solids
© EDP Sciences, Società Italiana di Fisica, Springer-Verlag, 1999
