Chain trapping in diblock copolymers near the ordering transition

Authors
Anastasiadis, SH Rittig, F Chrissopoulou, K Fleischer, G Fytas, G Semenov, AN Karger, J Xenidou, M Pispas, S Hadjichristidis, N
Citation
Sh. Anastasiadis et al., Chain trapping in diblock copolymers near the ordering transition, EUROPH LETT, 51(1), 2000, pp. 68-74
Citations number
30
Categorie Soggetti
Physics
Journal title
EUROPHYSICS LETTERS
ISSN journal
02955075 → ACNP
Volume
51
Issue
1
Year of publication
2000
Pages
68 - 74
Database
ISI
SICI code
0295-5075(200007)51:1<68:CTIDCN>2.0.ZU;2-B
Abstract
The mean-square displacement, <Delta r(2)>, of very high molecular weight d iblock copolymers in solutions near the disorder-to-order transition is inv estigated by pulsed-field-gradient NMR. The thermodynamic potential influen cing the motion leads to a time-independent <Delta r(2)> at short times fol lowed by free-diffusional behavior. The plateau is attributed to a trapping of the copolymer chains at the "quasi-interfaces" formed by slow compositi on fluctuations.