This paper analyzed rheologic properties of solutions of partially hydrolyzed polyacrylamide with super high molecular weight by rotate rheometer.The distribution of hydrodynamic diameter of polyacrylamide in brine solutions of different concentrations was measured by dynamic light scattering.The approach to accurately characterize the weight average molecular weight (Mw)
mean square radius of gyration (Rg) and the virial coefficient (A2) of polyacrylamide with super high molecular weight for oil recovery by multiangle light scattering (MALS) was studied.These three parameters of a commercial polyacrylamide sample (FP3630S) for oil recovery were precisely measured as Mw= (1.330.06)107
Rg=(2025) nm and A2 =(2.130.08)10-3 cm3 mol /g2
respectively.
关键词
多角度激光光散射分子量驱油用聚丙烯酰胺旋转流变仪
Keywords
Multiangle light scatteringMolecular weightPolyacrylamide for oil recoveryRotate rheometer