Deformation of Linked Polymer Coils

Abstract

Abstract: Linked polymer solution (LPS) is defined as the solution of linked polymer coils (LPCs)
dispersed in water, composed of low concentration partially hydrolyzed polyacrylamide
(HPAM) and aluminum citrate (crosslinker). In the work, the conformational changes of LPCs
under different conditions were investigated by the methods of membrane filtering under low
pressure, dynamic light scattering and core flooding experiments. The results showed that
in some conditions the LPCs could be compressed mechanically to 1/158.5 of their original
volume because of relatively lower HPAM cross-linking. The hydration property of LPCs was
similar to that of normal polymer coils. The deformation of LPCs was more restricted than
that of ordinary polymer coils under the flow shear stress or the shift of hydration
equilibrium caused in the variation of the electrolyte concentration which is responsible
for the effective plugging in the throats of porous media when LPCs are used for deep
diverting.

Key words: partially hydrolyzed polyacrylamide, linked polymer solution, coil, deformation

摘要： Linked polymer solution (LPS) is defined as the solution of linked polymer coils (LPCs)
dispersed in water, composed of low concentration partially hydrolyzed polyacrylamide
(HPAM) and aluminum citrate (crosslinker). In the work, the conformational changes of LPCs
under different conditions were investigated by the methods of membrane filtering under low
pressure, dynamic light scattering and core flooding experiments. The results showed that
in some conditions the LPCs could be compressed mechanically to 1/158.5 of their original
volume because of relatively lower HPAM cross-linking. The hydration property of LPCs was
similar to that of normal polymer coils. The deformation of LPCs was more restricted than
that of ordinary polymer coils under the flow shear stress or the shift of hydration
equilibrium caused in the variation of the electrolyte concentration which is responsible
for the effective plugging in the throats of porous media when LPCs are used for deep
diverting.

关键词: partially hydrolyzed polyacrylamide;linked polymer solution;coil;deformation

DONG Zhaoxia, LI Mingyuan, WU Zhaoliang, LIN Meiqin. Deformation of Linked Polymer Coils[J]. .

董朝霞, 李明远, 吴肇亮, 林梅钦. 交联聚合物线团的变形能力研究[J]. CIESC Journal.

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