Characterisation of poly(acrylamide) in solution

Abstract

Abstract Using a set of laboratory poly(acrylamide) samples in the molecular weight region M̄ w = 5.10 5 to M̄ w = 6.10 6 the following relations have been established, the polymer concentration c given in g/cm 3 : ([η], intrinsic viscosity; s 0 , sedimentation constant) Mainly based on light scattering experiments a more detailed description on molecular dimensions and solution structure of PAAm/H 2 O and PAAm/ethylene glycol systems is given. In both systems the relation a = 3 v − 1 ( a and v being the exponents of the intrinsic viscosity — and root‐means‐square end‐to‐end distance — molecular weight functions) holds.