Molecular weight of UHMW polymers with AF4-MALS
Asymmetric flow field flow fractionation (AF4) of polymers using a multi-angle light scattering (MALS) detector.
This analysis is suitable for polymers of ultra-high molecular weight (UHMW) >1E6 g/mol. This includes polymers such as polyisoprene (synthetic and natural rubber), polybutadiene, styrene-butadiene rubbers, polyisobutylene, or acrylic and methacrylic emulsion copolymers. AF4-MALS also provides superior separation of branched polymers.
The technique will measure the molecular weight distribution of polymer samples in a graphical format, the dispersity, Đ, and determine the actual molecular weight averages, Mn, Mw, and Mz.
The samples must be soluble or able to be measured from a solution at room temperature. The type of polymer and the necessary solvent will affect the cost. Please contact our experts for a quote tailored to your needs.
More information about the method:
SEC-MALS analysis- Suitable sample matrices
- Polymers soluble in the following solvents at room temperature: THF, DMF, CHCl3, DMAc, DMSO, toluene, HFIP, or aqueous solutions. Analysis of polymers requiring other solvents may be possible upon request
- Required sample quantity
- 100 mg
- Available quality systems
- Accredited testing laboratory
- Device types
- Method expert
Polymers and plastics
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