疏水缔合聚丙烯酰胺的自组装行为  

THE SELF-ASSEMBLY BEHAVIOR OF HYDROPHOBICALLY ASSOCIATING POLYACRYLAMIDE

作　　者：韩利娟[1] 叶仲斌[1] 陈洪[1] 罗平亚[1] 

机构地区：[1]"油气藏地质及开发工程"国家重点实验室.西南石油大学

出　　处：《西南石油学院学报》2006年第4期71-73,共3页Journal of Southwest Petroleum Institute

基　　金：国家863项目(2004AA617040);中国石油天然气集团公司创新基金(05E7042)

摘　　要：使用荧光光谱和动态光散射方法研究了疏水缔合聚丙烯酰胺(HAPAM)和聚丙烯酰胺(PAM)在水溶液中的结构和自组装行为。实验表明:HAPAM通过疏水作用,极易缔合形成聚集体,具有很低浓度的临界缔合浓度。动态光散射实验跟踪了HAPAM聚集体从小到大的生长过程,从溶液的微观结构上找到了HAPAM与PAM性能差异的根本原因。Contrasted with polyacrylamide(PAM),the self-assembly behavior and microstructure of hydrophoblically associating polyacrylmide(HAPAM) in aqueous solution have been studied by means of fluorescence spectrum and dynamic light scattering methods.The experimental results show that HAPAM can easily self-assemble to form a stock aggregate by hydrophobic driving force in aqueous dilute solution.The critical associating concentration(CAC) of HAPAM is very low.The dynamic variation of the apparent particle diameter of HAPAM and PAM are observed by dynamic light scattering.At the CAC of HAPAM,the particle of HAPAM from small size grows into large size,but PAM does not show this phenomenon at the same polymer concentration.This shows that self-assembly in aqueous solution is the unique behavior of HAPAM.

关 键 词：疏水缔合聚丙烯酰胺 自组装 荧光光谱 动态光散射 

分 类 号：TE357.431[石油与天然气工程—油气田开发工程]