Pii: S0032-3861(00)00617-0
نویسندگان
چکیده
Six generations of lactodendrimers based on poly(amidoamine) were studied in dilute solutions of 0.2 M NaCl by methods of molecular hydrodynamics (velocity sedimentation and viscometry) and optics (static and dynamic light scattering). Molecular weights, sedimentation and diffusion coef®cients, and intrinsic viscosity values were measured. These data were analysed and compared with previous results for lactodendrimers. The values of hydrodynamics invariant and average substance density in a dendrimer molecule are discussed. The volume occupied by lactogroups was evaluated and it was shown that lactogroups do not experience strong steric hidrances in lactodendrimer molecules. q 2001 Elsevier Science Ltd. All rights reserved.
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