Abstract
The mean-square displacement, 〈Δr2〉, of very high molecular weight diblock copolymers in solutions near the disorder-to-order transition is investigated by pulsed-field-gradient NMR. The thermodynamic potential influencing the motion leads to a time-independent 〈Δr2〉 at short times followed by free-diffusional behavior. The plateau is attributed to a trapping of the copolymer chains at the "quasi-interfaces" formed by slow composition fluctuations.
Original language | English (US) |
---|---|
Pages (from-to) | 68-74 |
Number of pages | 7 |
Journal | Europhysics Letters |
Volume | 51 |
Issue number | 1 |
DOIs | |
State | Published - Jul 1 2000 |
Externally published | Yes |
ASJC Scopus subject areas
- General Physics and Astronomy