高等学校化学学报

高等学校化学学报 ›› 2003, Vol. 24 ›› Issue (8): 1519.

• 研究快报 • 上一篇    下一篇

化学驱油过程中部分水解聚丙烯酰胺的二级结构研究

廖广志1, 周吉生2, 刘凤岐2, 马季铭1   

  1. 1. 北京大学化学与分子工程学院, 北京 100871;
    2. 吉林大学化学学院, 长春 130023
  • 收稿日期:2003-02-25 出版日期:2003-08-24 发布日期:2003-08-24
  • 通讯作者: 刘凤岐(1958年出生),男,教授,博士生导师,主要从事高分子凝聚态物理与功能材料研究.E-mail:fengqiliu@21cn.com E-mail:fengqiliu@21cn.com
  • 基金资助:

    国家自然科学基金(批准号:20274014)资助

Studies on the Secondary Structure of Partially HydrolyzedPoly(acrylamide) in the Process of Chemical Oil Recovery

LIAO Guang-Zhi1, ZHOU Ji-Sheng2, LIU Feng-Qi2, MA Ji-Ming1   

  1. 1. College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China;
    2. College of Chemistry, Jilin University, Changchun 130023, China
  • Received:2003-02-25 Online:2003-08-24 Published:2003-08-24

PDF (PC)

被引次数

21

关键词: 聚丙烯酰胺, 二级结构, 化学驱油

Abstract: The secondary structure parameters of partially hydrolyzed poly(acrylamide)(HPAM) in the process of chemical oil recovery have been determined by means of GPC-light scattering cooperation.It was found that the mean molecular mass of HPAM had decreased to 4 to 8 times, the molecular mass distribution of HPAM became broad.It has been deduced that the molecular mass decrease of HPAM results from the HPAM degradation and the mechanical degradation is a determinant because the molecular mass distributions of HPAM after degradation were narrower than the results estimated with the random degradation theory.The chain flexibility somewhat decreased when HPAM solution flowed in underground sandstones in the period of 6 to 8 months, that is, (<S2> n/<M>n)1/2increased from original 0.065 to 0.075 for HPAM in flooding 2 and 4 years and 0.081 for 6 years, which maybe imply HPMA further hydrolyzed under the underground weak basic condition of the oilfield.

Key words: Poly(acrylamide), Secondary structure, Chemical oil recovery

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