波谱学杂志 ›› 2004, Vol. 21 ›› Issue (1): 67-71.

• 研究简报 • 上一篇    下一篇

PAM/POEA无规共聚物水溶液中自聚集机制的NMR研究

高红昌1,毛诗珍1*,李妙贞2,袁汉珍1,王尔鉴2,杜有如1   

  1. 1.中国科学院武汉物理与数学研究所,波谱与原子分子物理国家重点实验室, 湖北武汉 430071;
    2.中国科学院理化技术研究所,北京 100101
  • 收稿日期:2003-10-25 修回日期:2003-12-20 出版日期:2004-03-05 发布日期:2004-03-05
  • 基金资助:

    国家重点基础研究发展规划发展项目“大幅度提高石油采收率的基础研究”(G199022503)和国家自然科学基金(230373087)资助.

AGGREGATION BEHAVIOR OF A NOVEL HYDROPHOBICALLY ASSOCIATING COPOLYMER OF PAM/POEA IN AQUEOUS SOLUTION STUDIED BY 1H NMR

GAO Hong-Chang1, MAO Shi-Zhen1*, LI Miao-Zhen2, YUAN Han-Zhen1, WANG Er-Jian2, DU You-Ru1   

  1. 1.State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Wuhan Institute of Physics and Mathematics, The Chinese Academy of Sciences, Wuhan 430071, People's Republic of China; 2.Technical Institute of Physics and Chemistry, The Chinese Academy of Sciences, Beijing 100101, People's Republic of China
  • Received:2003-10-25 Revised:2003-12-20 Online:2004-03-05 Published:2004-03-05
  • Supported by:

    国家重点基础研究发展规划发展项目“大幅度提高石油采收率的基础研究”(G199022503)和国家自然科学基金(230373087)资助.

摘要:

1H NMR谱和二维核Overhauser效应谱(2D NOESY)研究结果表明新型疏水缔合丙烯酰胺/2-苯氧乙基丙烯酸酯无规共聚物(PAM/POEA)在水溶液中的自聚集主要发生在酚基间以及酚基与主链的相互作用上,在PAM/POEA自聚集体中酚基主要位于丙烯酰胺主链骨架附近.

关键词: 1H NMR, 2D NOESY, PAM/POEA, 自聚集, 共聚物

Abstract:

1H NMR spectroscopy with two-dimensional nuclear Overhauser enhancement (2D NOESY) measurements was used to study the aggregation behavior of a novel hydrophobically associating copolymer composed mainly of acrylamide (AM) and a small amount of 2phenoxyethyl acrylate (POEA). The results show that aggregation of the copolymer PAM/POEA mainly derives from the interactions among the phenoxy groups and that between the phenoxy group and the acrylamide backbone. 2D NOESY experiments unambiguously show that, in the  POEA/PAM aggregates, the phenoxy groups of the hydrophobic parts of POEA are possibly located in the vicinity of the acrylamide backbones.

Key words: 1H NMR, 2D NOESY, PAM/POEA, aggregation, copolymer