Etude de la structure ramifiée du polyéthylène basse densité par viscosité et diffusion de la lumière de fractions issues de la chromatographie d'exclusion gpc

摘要: Fractions of high density polyethylene (PEhd) and low (PEld) obtained from gel permeation chromatography were studied by viscometry light scattering. The variations the intrinsic viscosity [η], molecular weight Mw, radius gyration Rg for PEhd PEld compared with one another relationships [η] vs M vs. established. dependence structural parameters g = (Rg2)branch/(Rg2)linear g′ [η]branch/[η]linear on was determined three samples PEld.