Milner, S.T. and McLeish, T.C.B. (1998) Reptation and contour-length fluctuations in melts of linear polymers. Physical Review Letters, 81 (3). pp. 725-728. ISSN 0031-9007
Available under licence : See the attached licence file.
We present an analytical theory of stress relaxation in monodisperse linear polymer melts that contains contributions from both reptation and contour-length fluctuations, modeled as in our previous work on arm retraction in star polymers. Our approach resolves two long-standing problems with reptation theory: it predicts a zero-shear viscosity eta scaling as eta similar to N-3.4 over a broad range in chain length N before reaching an asymptotic N3 dependence, and a power law omega(-alpha) in the dynamic loss modulus G "(omega) with 0 < alpha < 1/4 depending on chain length, in agreement with experiment.
|Copyright, Publisher and Additional Information:||© 1998 The American Physical Society. Reproduced in accordance with the publisher's self-archiving policy.|
|Institution:||The University of Leeds|
|Academic Units:||The University of Leeds > Faculty of Maths and Physical Sciences (Leeds) > School of Physics and Astronomy (Leeds)|
|Depositing User:||Repository Officer|
|Date Deposited:||16 Aug 2006|
|Last Modified:||05 Jun 2014 12:11|
|Publisher:||American Physical Society|