Crossref journal-article
AIP Publishing
The Journal of Chemical Physics (317)
Abstract

The concentration pair correlation function and the order–disorder transition in a diblock copolymer melt are studied in the framework of a self-consistent one-loop approximation. In contrast with earlier work, no simplifying assumption on the wave vector dependence of the correlation functions is made. This allows us to calculate the shift in the peak of the fluctuation spectrum recently observed in neutron scattering experiments. Quantitative agreement with experimental results is found. We also present a new calculation of how the collective concentration fluctuations influence single chain statistics in the copolymer melt. It is shown that even in the disordered phase, strong deviations from Gaussian statistics can be expected for finite molecular weights. A local segregation between monomers of the two different blocks results in an increase in the copolymer radius of gyration.

Bibliography

Barrat, J.-L., & Fredrickson, G. H. (1991). Collective and single-chain correlations near the block copolymer order–disorder transition. The Journal of Chemical Physics, 95(2), 1281–1289.

Authors 2
  1. Jean-Louis Barrat (first)
  2. Glenn H. Fredrickson (additional)
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Dates
Type When
Created 23 years, 1 month ago (July 26, 2002, 8:20 a.m.)
Deposited 1 year, 6 months ago (Feb. 10, 2024, 8:07 a.m.)
Indexed 1 week, 1 day ago (Aug. 21, 2025, 12:51 p.m.)
Issued 34 years, 1 month ago (July 15, 1991)
Published 34 years, 1 month ago (July 15, 1991)
Published Print 34 years, 1 month ago (July 15, 1991)
Funders 0

None

@article{Barrat_1991, title={Collective and single-chain correlations near the block copolymer order–disorder transition}, volume={95}, ISSN={1089-7690}, url={http://dx.doi.org/10.1063/1.461109}, DOI={10.1063/1.461109}, number={2}, journal={The Journal of Chemical Physics}, publisher={AIP Publishing}, author={Barrat, Jean-Louis and Fredrickson, Glenn H.}, year={1991}, month=jul, pages={1281–1289} }