Identification of an intermediate-segregation regime in a diblock copolymer system
IMFUFA (Institute of Mathematics and Physics),
Roskilde University, P.O. Box 260, DK-4000 Roskilde, Denmark
2 Department of Solid State Physics, Risø National Laboratory, P.O. Box 49, DK-4000 Roskilde, Denmark
Accepted: 19 September 1996
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 inter mediate-segregation regime and the strong-segregation limit at . In the inter mediate-segregation regime (), the characteristic length scale, D, scales with chain length, N, as . In the strong-segregation limit (), the scaling behavior is found. The observed crossover is consistent with theoretical predictions.
PACS: 64.60.Cn – Order-disorder and statistical mechanics of model systems / 61.41.+e – Polymers, elastomers, and plastics / 61.10.Eq – X-ray scattering (including small-angle scattering)
© EDP Sciences, 1996