波谱学杂志 ›› 2000, Vol. 17 ›› Issue (6): 489-493.

• 研究论文 • 上一篇    下一篇

HPAM/AlCit体系交联聚合物反应的27Al核磁共振研究

唐亚林1, 李立璞1, 侯可悦1, 林梅钦2, 李明远2   

  1. 1. 中国科学院化学研究所, 分子科学中心, 北京 100080;
    2. 石油大学(北京)化工学院, 北京 102200
  • 收稿日期:2000-09-08 修回日期:2000-10-19 出版日期:2000-12-05 发布日期:2018-01-11
  • 作者简介:唐亚林(1963-),男,博士,副研究员
  • 基金资助:
    石油大学重质油加工国家重点实验室资助项目

27Al NMR STUDY OF LINK POLYMERIZATION OF HPAM/AlCit SYSTEM

TANG Ya-lin1, LI li-pu1, HOU Ke-yue1, LIN Mei-qin2, LI Ming-yuan2   

  1. 1. Institute of Chemistry, The Chinese Academy of Science, Beijing 100080;
    2. Department of Chemical Industry, Petroleum University, Beijing 102200
  • Received:2000-09-08 Revised:2000-10-19 Online:2000-12-05 Published:2018-01-11

摘要: 27Al NMR谱、自旋-晶格弛豫时间结合数字拟合方法研究了pH值对柠檬酸铝(AlCit)水溶液中络合物结构及组成的影响,研究了部分水解聚丙烯酰胺(HPAM)与柠檬酸铝(AlCit)形成的低聚合物浓度交联体系中,当HPAM与AlCit配比改变时及体系总浓度改变时铝络合物的结构及组成的变化,研究结果表明:在所研究的配比范围内,聚丙烯酰胺作为配体,首先进攻柠檬酸铝中的由水分子作配体的位于高场的Al,取代水分子与铝核形成络合物。

关键词: 27Al NMR, 自旋-晶格弛豫时间, 柠檬酸铝, 聚丙烯酰胺, 交联聚合物

Abstract: The results of 27Al NMR investigation of structure and composition of Citrate complex of Aluminium by computer non-linear fit of pH dependence are reported here. 27Al NMR study of copolymer of HPAM and AlCit at different concentration ratios of HPAM and AlCit shows that HPAM as ligand first attack aluminum coordinated with water. It can be deduced that there are three phases in the mixed solution of copolymer of HPAM and AlCit based on the study of spin-lattice relaxation time of linked polymer at different total concentrations of mixed solution.

Key words: 27Al NMR, Spin-lattice relaxation time, AlCit, HPAM, Copolymer

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