Marianne Marx‐Figini

The Control of Molecular Weight and Molecular-Weight Distribution in the Biogenesis of Cellulose

General references to which the reader is referred for further discussion of the subjects covered in this section are Flory (1953, 1969), Tanford (1967), Billmeyer (1971), Vollmert (1973), Elias (1972), Hoffman et al. (1977), and Cantow (1967).

Dynamics properties of polymer solutions (I). Dilute-semidilute transition

Measurements of viscosity and dielectric relaxation were carried out using several solutions of cellulose trinitrate polymer in isophorone in the dilute and the semidilute regime. In each case, the renormalization group theory was applied to the data using the De Genness blobs model for connecting dynamic and conformational quantities. There was adequate agreement between the experimental results and the theoretical predictions to show universal behavior. The values of β were independent of both molecular weight and polymer concentration and could be used to describe a variety of dynamic properties. These findings suggest that only one scaling variable is necessary for such purposes.