What is the molecular weight of Anionic Polyacrylamide?
2026-04-14 10:14:55
The molecular weight(MW)of APAM typically ranges from 3 million to 25 million Daltons(Da),and is classified into grades for different applications:
Standard Grades&Ranges
Low MW:3–8 million Da
Fast dissolution,low viscosity;used for dispersants,soil stabilizers,or low-turbidity water.
Medium MW:8–15 million Da
Balanced flocculation and solubility;general wastewater treatment.
High MW:15–25 million Da
Strong flocculation,large dense flocs,fast settling;mining,coal washing,heavy industrial wastewater.
Ultra-high MW:>25 million Da
For enhanced oil recovery(EOR),thickening,drilling fluids.
Key Notes
Higher MW=stronger bridging&faster floc settling
Higher MW=higher viscosity&slower dissolution
MW is customizable during production
Units:million Daltons(MDa)or 10⁶g/mol
References
GB/T 7714
Li S,Chen J,Zhang Y.Molecular weight design and application performance of anionic polyacrylamide.Industrial Water Treatment,2020,40(5):78–82.
MLA
Li,Shaobo,et al."Molecular Weight Design and Application Performance of Anionic Polyacrylamide."Industrial Water Treatment,vol.40,no.5,2020,pp.78–82.
APA
Li,S.B.,Chen,J.,&Zhang,Y.(2020).Molecular weight design and application performance of anionic polyacrylamide.Industrial Water Treatment,40(5),78–82.
