Microstructural effects on the ginzburg number and the crossover behavior in d-PBPS blends

D. Schwahn, H. Takeno, L. Willner, H. Hasegawa, H. Jinnai, T. Hashimoto, M. Imai

Research output: Contribution to journalArticlepeer-review

22 Citations (Scopus)

Abstract

The critical behavior of three equimolar deuterated polybutadiene/ polystyrene (d-PBPS) blends was measured by small-angle neutron scattering. The three blends differ by the content of the 1,4 and 1,2 units of the d-PB component. It was found that the Ginzburg number increases with 1,2 unit content which even leads to a crossover like the "Fisher renormalized" critical behavior. The larger content of 1,2 units is supposed to increase the free volume change upon mixing which influences the Ginzburg number. Thus the nonuniversality of the Ginzburg number is clearly demonstrated.

Original languageEnglish
Pages (from-to)3427-3430
Number of pages4
JournalPhysical review letters
Volume73
Issue number25
DOIs
Publication statusPublished - 1994
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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