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Deformation of Linked Polymer Coils 被引量:1

Deformation of Linked Polymer Coils
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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. 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 (cross-linker). 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.
出处 《Chinese Journal of Chemical Engineering》 SCIE EI CAS CSCD 2003年第6期686-690,共5页 中国化学工程学报(英文版)
基金 Supported by Open Foundation of State Key Laboratoy of Heavy Oil Processing(No. 200013)
关键词 交联聚合物溶液 LPS 交联聚合物线团 LPC 变形能力 部分水解聚丙烯酰胺 HPAM partially hydrolyzed polyacrylamide, linked polymer solution, coil, deformation
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  • 1[5]Tong,M.L.;Guo,X.L.Chemistry of Oil Field,1992,9(2):145 [佟曼丽 ,郭小莉 .油田化学 (Yutian Huaxue),1992,9( 2) :145]
  • 2彭勃,Chin J Chem Eng,1998年,6卷,2期,171页
  • 3高振环,油田化学,1985年,2卷,1期,42页

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