物理化学学报 >> 2012, Vol. 28 >> Issue (04): 903-908.doi: 10.3866/PKU.WHXB201202171

软物质 上一篇    下一篇

疏水缔合聚丙烯酰胺在盐水中的自组装行为

陈洪1, 吴晓艳2, 叶仲斌1,2, 韩利娟2, 罗平亚1   

  1. 1. 西南石油大学油气藏地质及开发工程国家重点实验室, 成都 610500;
    2. 西南石油大学化学化工学院, 成都 610500
  • 收稿日期:2011-10-31 修回日期:2012-01-16 发布日期:2012-03-21
  • 通讯作者: 陈洪 E-mail:chenh@swpu.edu.cn
  • 基金资助:

    中国石油科技创新基金(2011D-5006-0209)资助项目

Self-Assembly Behavior of Hydrophobically Associating Polyacrylamide in Salt Solution

CHEN Hong1, WU Xiao-Yan2, YE Zhong-Bin1,2, HAN Li-Juan2, LUO Ping-Ya1   

  1. 1. State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, Southwest Petroleum University, Chengdu 610500, P. R. China;
    2. School of Chemistry and Chemical Engineering, Southwest Petroleum University, Chengdu 610500, P. R. China
  • Received:2011-10-31 Revised:2012-01-16 Published:2012-03-21
  • Contact: CHEN Hong E-mail:chenh@swpu.edu.cn
  • Supported by:

    The project was supported by the PetroChina Innovation Foundation (2011D-5006-0209).

摘要: 使用静态光散射、动态光散射以及原子力显微镜(AFM)研究了疏水缔合聚丙烯酰胺(HAPAM)在盐水溶液中的自组装行为. 研究了聚合物分子在不同盐浓度中的表观重均分子量(Mw,a), 均方根回转半径(<Rg>), 流体力学半径(<Rh>), 第二维里系数(A2)的变化, 并根据<Rg>/<Rh>的比值得出聚合物分子的聚集形态. 实验结果表明: 随着盐浓度的增强, 聚合物溶液的分子链由舒展变得卷曲.

关键词: 疏水缔合聚丙烯酰胺, 动态光散射, 静态光散射, 粘度, 聚集行为, 原子力显微镜

Abstract: The self-assembly behavior of hydrophobically associating polyacrylamide (HAPAM) in salt solution was studied by static light scattering, dynamic light scattering, and atomic force microscopy (AFM). The apparent weight average molecular weight (Mw,a), root mean square radius of gyration (<Rg>), hydrodynamic radius (<Rh>), and the second virial coefficient (A2), were investigated. The ratio of <Rg> to <Rh> was used to determine the molecular shape of the polymer in salt solution. As the salt concentration increased, the polymer chain transformed from stretch to curl.

Key words: Hydrophobically associating polyacrylamide, Dynamic light scattering, Static light scattering, Viscosity, Aggregation behavior, Atomic force microscopy

MSC2000: 

  • O648