Intrinsic viscosity of flexible macromolecules : transition from theta to collapsed state
نویسندگان
چکیده
2014 Intrinsic viscosity measurements have been performed on polystyrene-cyclohexane system as a function of temperature T (T ~ 03B8 and as a function of molecular weight (8.2 x 104 ~ Mw ~ 2.06 x 107) .The expansion factor 03B13~ = [~]/[~03B8] of the intrinsic viscosity [~] scales with the reduced variable (T 2014 03B8/T) · ~Mw. For (T201403B8/T) ” ~Mw ~ 2014 40, the intrinsic viscosity of a collapsed macromolecule is found to be independent of molecular weight A value 03BD = 1/3 is therefore given to the index relating size to molecular weight. (Recu le 24 avril 1984, accepté le 4 juillet 1984) J. Physique 45 (1984) 1765-1772 NOVEMBRE 1984, Classification Physics Abstracts 47.50 61.40K 64.40K
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