Method for determining the weight-average molecular weight of a water-soluble high molecular weight polymer.

Stephane Jouenne , Matthieu Loriau , Bruno Grassl (1) , Nathalie. Andreu

1 IPREM - Institut des sciences analytiques et de physico-chimie pour l'environnement et les materiaux

The invention concerns a method for detg. the wt.- av. mol. wt. of a water-sol. high mol. wt. polymer, said method comprising the following steps: (a) Providing a Size Exclusion Chromatog. column connected to a Multi Angle Light Scattering and Differential Refractive Index detectors; (b) Providing water as mobile phase of said Size Exclusion Chromatog. column; (c) Injecting said polymer into said mobile phase of said Size Exclusion Chromatog. column; (d) Measuring the wt.- av. mol. wt. of said polymer with the Multi Angle Laser Light Scattering and Differential Refractive Index detectors; wherein the flow rate of said mobile phase is lower than 0.20 mL/min, in particular is from 0.05 mL/min to 0.20 mL/min, more particularly from 0.10 mL/min to 0.15 mL/min. [on SciFinder(R)]

Mots clés: av mol wt water soluble polymer size exclusion chromatog; multi angle light scattering differential refractive index detector polymer

Domaines: Chimie

Stephane Jouenne, Matthieu Loriau, Bruno Grassl, Nathalie. Andreu. Method for determining the weight-average molecular weight of a water-soluble high molecular weight polymer.. Unknown Region, Patent n° : WO 2017042603 A1 2017031. 2017, 20pp. ⟨hal-01617273⟩