Anionic Polyacrylamide has a big range of high molecular weight from million, with an anionic charge density ranging from%. EA-6518 grade has high molecular weight, and medium charge degease the viscosity of water (creating a thicker solution) or to encourage flocculation of particles present in water.Novel High-Viscosity Polyacrylamidated Chitosan for Neural. It is well acknowledged and established that polyacrylamide undergoes degradation in the presence of persulphate ions leading to the formation of high molecular mass polyacrylamide free radicals that may act as monomer radicals [21,22].2, For petroleum industry, oil production, drilling mud, waste mud treatment, to prevent water channeling, reduce friction, improve oil recovery, tertiary oil production is widely used. 3, For textile sizing agent, slurry performance is stable, less pulp, fabric breakage rate is low, smooth cloth.Viscosity of partially hydrolyzed polyacrylamide under. For oil ﬁeld applications, partially hydrolyzed polyacryl-amide (HPAM) is the most widely used polymer. HPAM must maintain high viscosity to achieve good oil recovery. In reality, however, polymers can be severely degraded by shearing and heat in the underground environment.