Structural study of fractionated hydroxyethyl-amylopectin in aqueous solution

Fractionated hydroxyethyl starch was well characterized by coupled LALLS-SEC (lowangle laser light scattering and steric exclusion chromatography), QELLS (quasi-elastic laser light scattering), MALLS (multiangle laser light scattering), and viscosimetry. The scaling laws of the molecular weight dependences of the following dimensions are found to exhibit low exponents consistent with a highly grafted structure: Additional X-ray synchrotonic scattering (SAXS) studies permit us to give a preliminary description of the internal structure of the macromolecules.