Hydrodynamic and molecular characteristics of poly[1-(trimethylgermyl)propyne]

Samples and fractions of a membrane-forming polymer poly[1-(-trimethylgermy l)propyne], with the molecular weight within 4<Mx10(-4)<170 were studied in cyclohexane by methods Of Molecular hydrodynamics (centrifugal sedimentati on. translational isothermal diffusion, and viscometry). The molecular weig ht dependences of the hydrodynamic characteristics were determined and anal yzed. These dependences were used to estimate the equilibrium rigidities of the poly[1-(trimethylgermyl)propyne] chains. The size of the macromolecule s was studied as influenced by the bulk effects. The results obtained are c ompared with published data for poly[1(trimethylsilyl)propyne].