DOI: 10.1063/1.460067. The microphase separation transition in symmetric diblock copolymer melts: A Monte Carlo study

The microphase separation transition in symmetric diblock copolymer melts: A Monte Carlo study

10.1063/1.460067

Crossref journal-article

AIP Publishing

The Journal of Chemical Physics (317)

Abstract

We use Monte Carlo methods to study a lattice model of a dense melt of symmetric diblock copolymers. The calculations are performed in three dimensions using a slithering snake algorithm. In this work we present results for temperatures at and above the microphase separation transition (MST). The location of the MST is found through a study of the relaxation time associated with lamellar compositional fluctuations. A range of copolymer chain lengths are studied, and from our results, approximate scaling relationships are established. A collective length scale characterizing the compositional fluctuations is found which results from a nontrivial compositional mesostructure. At infinite temperature (athermal conditions), the copolymers exhibit the expected Gaussian conformational behavior. We find, however, that at finite temperatures, the copolymers exhibit non-Gaussian behavior indicative of a stretched or elongated state. The magnitude of this stretching, and hence of the deviation from Gaussian behavior, is found to increase as the temperature decreases towards the MST.

Bibliography

Fried, H., & Binder, K. (1991). The microphase separation transition in symmetric diblock copolymer melts: A Monte Carlo study. The Journal of Chemical Physics, 94(12), 8349â8366.

Authors 2

H. Fried (first)
K. Binder (additional)

References 29 Referenced 186

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{'key': '2024021011254837700_r2'}
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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, 8:10 a.m.)
Indexed	5 days, 15 hours ago (Aug. 21, 2025, 12:41 p.m.)
Issued	34 years, 2 months ago (June 15, 1991)
Published	34 years, 2 months ago (June 15, 1991)
Published Print	34 years, 2 months ago (June 15, 1991)

Funders 0

None

BibTeX

@article{Fried_1991, title={The microphase separation transition in symmetric diblock copolymer melts: A Monte Carlo study}, volume={94}, ISSN={1089-7690}, url={http://dx.doi.org/10.1063/1.460067}, DOI={10.1063/1.460067}, number={12}, journal={The Journal of Chemical Physics}, publisher={AIP Publishing}, author={Fried, H. and Binder, K.}, year={1991}, month=jun, pages={8349–8366} }

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