TY - JOUR
T1 - Microstructural effects on the ginzburg number and the crossover behavior in d-PBPS blends
AU - Schwahn, D.
AU - Takeno, H.
AU - Willner, L.
AU - Hasegawa, H.
AU - Jinnai, H.
AU - Hashimoto, T.
AU - Imai, M.
PY - 1994
Y1 - 1994
N2 - 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.
AB - 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.
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U2 - 10.1103/PhysRevLett.73.3427
DO - 10.1103/PhysRevLett.73.3427
M3 - Article
AN - SCOPUS:0000151474
SN - 0031-9007
VL - 73
SP - 3427
EP - 3430
JO - Physical Review Letters
JF - Physical Review Letters
IS - 25
ER -