We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Effects of polydispersity on the order-disorder transition of diblock copolymer melts.
- Authors
Beardsley, T. M.; Matsen, M. W.
- Abstract
The effect of polydispersity on an AB diblock copolymer melt is investigated using lattice-based Monte Carlo simulations. We consider melts of symmetric composition, where the B blocks are monodisperse and the A blocks are polydisperse with a Schultz-Zimm distribution. In agreement with experiment and self-consistent field theory (SCFT), we find that polydispersity causes a significant increase in domain size. It also induces a transition from flat to curved interfaces, with the polydisperse blocks residing on the inside of the interfacial curvature. Most importantly, the simulations show a relatively small shift in the order-disorder transition (ODT) in agreement with experiment, whereas SCFT incorrectly predicts a sizable shift towards higher temperatures.
- Subjects
COPOLYMERS; MONTE Carlo method; FIELD theory (Physics); ORDER-disorder models; HIGH temperatures
- Publication
European Physical Journal E -- Soft Matter, 2008, Vol 27, Issue 3, p323
- ISSN
1292-8941
- Publication type
Article
- DOI
10.1140/epje/i2008-10383-6