Projects per year
Abstract
The phase behavior of poly(styrene)-b-poly(1,4-butadiene) diblock copolymers with a polymer block invariant degree of polymerization Nb≈800 shows no evidence of Frank-Kasper phases, in contrast to low molar mass diblock copolymers (Nb<100) with the same conformational asymmetry. A universal self-concentration crossover parameter Nx≈400 is identified, directly related to the crossover to entanglement dynamics in polymer melts. Mean-field behavior is recovered when Nb>Nx, while complex low symmetry phase formation is attributed to fluctuations and space-filling constraints, which dominate when Nb<Nx.
Original language | English (US) |
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Article number | 208002 |
Journal | Physical Review Letters |
Volume | 121 |
Issue number | 20 |
DOIs | |
State | Published - Nov 14 2018 |
MRSEC Support
- Shared
PubMed: MeSH publication types
- Journal Article
Fingerprint
Dive into the research topics of 'Role of Chain Length in the Formation of Frank-Kasper Phases in Diblock Copolymers'. Together they form a unique fingerprint.Projects
- 2 Finished
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MRSEC IRG-3: Hierarchical Multifunctional Macromolecular Materials
Reineke, T. M. (Coordinator), Bates, F. S. (Senior Investigator), Dorfman, K. (Senior Investigator), Dutcher, C. S. (Senior Investigator), Hillmyer, M. A. (Senior Investigator), Lodge, T. P. (Senior Investigator), Morse, D. C. (Senior Investigator), Siepmann, I. (Senior Investigator), Barreda, L. (Researcher) & Ganewatta, M. S. (Researcher)
11/1/14 → 10/31/20
Project: Research project
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