Multimerization: Association and aggregation, 14. Distinction between open and closed associations
Hans‐Georg Elias, Karel Šolc · Die Makromolekulare Chemie · 1975
Abstract Open and closed molecule‐based associations with experimentally incompletely accessible concentration dependencies of the apparent molecular weights can be distinguished by plotting the apparent weight average molecular weight, (Mw)app, versus the inverse apparent number average molecular weight, (Mn) . For closed associations, straight lines are observed for theta‐systems and concave ones for non‐theta‐systems of associating rods. Open associations in these cases give convex lines for both, theta and non‐theta‐systems. Loops can be expected for both types of associations for non‐theta‐systems at high concentrations. A similar plot can be based on apparent z and weight average molecular weights.