β Scribed by Suzuki, Hidematsu
No coin nor oath required. For personal study only.
For light scattering analysis of an extremely high molecular weight polymer with large size in solution, use of mixtures of a given polymer with its low molecular weight homologue is described to have great advantages. With such bimodal mixtures as test samples, one can alter the unknown form of the angular variations of scattered lights to a form to be expected and widen the range of the linearity with sin^2^ (ΓΈ/2), where ΓΈ is the scattering angle. According to the considerations, a sample of linear polystyrene was successfully analysed on a commercial apparatus, Fica 50 to have the weightβaverage molecular weight of 27 million.
π SIMILAR VOLUMES
## Recent developments of using laser light scattering (LLS) to characterize the molecular weight distribution f(M) of special polymers such as Kevlar, Tefzel, Teflon, branched epoxy clusters, gelatin, dextran, segment copolymers and polymer mixtures, are reviewed. The basic principle of combining s
Some low-molecular-weight polymers (poly(butyl methacrylate), nylon 6, nylon 12) in the solvent system m-cresol/n-heptane, with effective refractive index increments (dn/cac), in the range 0.34~).81 ml/g, have been studied by light scattering. These extremely large values, measured by differential r