Identification of an intermediate-segregation regime in a diblock copolymer system

C. M. Papadakis; K. Almdal; K. Mortensen; D. Posselt

doi:10.1209/epl/i1996-00224-x

Identification of an intermediate-segregation regime in a diblock copolymer system

C. M. Papadakis, K. Almdal, K. Mortensen, D. Posselt

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Abstract

We have studied the scaling behavior of the bulk structure in a symmetric diblock copolymer system using small-angle scattering. We have identified a crossover between the intermediate-segregation regime and the strong-segregation limit at _χN ≃ 29. In the intermediate-segregation regime (_χN ≃ 5-29), the characteristic length scale, D, scales with chain length, N, as D ∝ N^0.83. In the strong-segregation limit (_χN > 29), the scaling behavior D ∝ N^0.61 is found. The observed crossover is consistent with theoretical predictions.

Original language	English
Pages (from-to)	289-294
Number of pages	6
Journal	Europhysics Letters
Volume	36
Issue number	4
DOIs	https://doi.org/10.1209/epl/i1996-00224-x
State	Published - 1 Nov 1996
Externally published	Yes

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title = "Identification of an intermediate-segregation regime in a diblock copolymer system",

abstract = "We have studied the scaling behavior of the bulk structure in a symmetric diblock copolymer system using small-angle scattering. We have identified a crossover between the intermediate-segregation regime and the strong-segregation limit at χN ≃ 29. In the intermediate-segregation regime (χN ≃ 5-29), the characteristic length scale, D, scales with chain length, N, as D ∝ N0.83. In the strong-segregation limit (χN > 29), the scaling behavior D ∝ N0.61 is found. The observed crossover is consistent with theoretical predictions.",

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T1 - Identification of an intermediate-segregation regime in a diblock copolymer system

AU - Papadakis, C. M.

AU - Almdal, K.

AU - Mortensen, K.

AU - Posselt, D.

PY - 1996/11/1

Y1 - 1996/11/1

N2 - We have studied the scaling behavior of the bulk structure in a symmetric diblock copolymer system using small-angle scattering. We have identified a crossover between the intermediate-segregation regime and the strong-segregation limit at χN ≃ 29. In the intermediate-segregation regime (χN ≃ 5-29), the characteristic length scale, D, scales with chain length, N, as D ∝ N0.83. In the strong-segregation limit (χN > 29), the scaling behavior D ∝ N0.61 is found. The observed crossover is consistent with theoretical predictions.

AB - We have studied the scaling behavior of the bulk structure in a symmetric diblock copolymer system using small-angle scattering. We have identified a crossover between the intermediate-segregation regime and the strong-segregation limit at χN ≃ 29. In the intermediate-segregation regime (χN ≃ 5-29), the characteristic length scale, D, scales with chain length, N, as D ∝ N0.83. In the strong-segregation limit (χN > 29), the scaling behavior D ∝ N0.61 is found. The observed crossover is consistent with theoretical predictions.

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VL - 36

SP - 289

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JO - Europhysics Letters

JF - Europhysics Letters

IS - 4

ER -

Identification of an intermediate-segregation regime in a diblock copolymer system

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