正十二烷基硫酸钠在聚丙烯酰胺溶液中聚集的1H NMR研究

波谱学杂志

正十二烷基硫酸钠在聚丙烯酰胺溶液中聚集的¹H NMR研究

方晓雯1, 赵濉2, 袁汉珍1, 毛诗珍1, 俞稼镛2, 杜有如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.中国科学院物理与化学技术研究所，北京 100101

收稿日期:2002-07-18 修回日期:2002-08-08 出版日期:2003-06-05 发布日期:2003-06-05
作者简介:方晓雯(1976-)，女，安徽人，硕士研究生.*通讯联系人,杜有如：E-mail: ifshen@wipm.ac.cn
基金资助:
国家重点基础研究发展规划资助项目(G1999022504).

MICELLIZATION OF SODIUM DODECYL SULFATE IN POLYACRYLAMIDE AQUEOUS SOLUTION STUDIED BY ¹H NMR

FANG Xiao-wen1, ZHAO Sui2, YUAN Han-zhen1, MAO Shi-zhen1, YU Jia-yong2, DU You-ru1*

1.State Key Laboratory of Magnetic Resonance and Atomic & Molecular Physics, Wuhan Institute of Physics and Mathematics, The Chinese Academy of Sciences, Wuhan 430071, China;
2.Technical Institute of Physics and Chemistry, The Chinese Academy of Sciences, Beijing 100101, China

Received:2002-07-18 Revised:2002-08-08 Online:2003-06-05 Published:2003-06-05
About author:*Correspondence author,Du You-ru: ifshen@wipm.ac.cn
Supported by:
国家重点基础研究发展规划资助项目(G1999022504).

摘要/Abstract

摘要：

利用核磁共振自旋-晶格弛豫时间（T₁）、自旋-自旋弛豫时间（T₂）、自扩散系数（D）以及二维核Overhause增强谱（2D NOESY）技术研究了表面活性剂正十二烷基硫酸钠（SDS）在聚丙烯酰胺（PAM）浓度固定为10 g/L水溶液中的聚集. 结合与SDS水溶液体系核磁共振实验数据比较，得到了如下信息：（1）当溶液中有PAM存在时，SDS分子的运动性下降，临界聚集浓度提前；（2）随着SDS浓度的增加，PAM分子的自扩散性能下降，同时分子链的柔软性也下降了；（3） 2D NOESY谱结果表明，PAM与SDS分子间未发生直接的缔合作用.

关键词: 核磁共振, 相互作用, NOESY, 正十二烷基硫酸钠（SDS）, 聚丙烯酰胺（PAM）

Abstract:

Using nuclear magnetic resonance spin-lattice relaxation time (T₁), spin-spin relaxation time (T₂), self-diffusion coefficient (D) and 2D NOESY techni
ques, the micellization process of sodium dodecyl sulfate (SDS) in polyacrylamide (PAM) aqueous solutions was studied. The molecular dynamic behaviors of SDS in the presence of PAM were compared with those in a PAM-free aqueous solution. These results suggest that: (1) the critical micelle concentration of SDS is lowered in the presence of PAM; (2) both the translational mobility and the chain plasticity of PAM decrease with the increase in SDS concentration; (3) the direct congregation between PAM and SDS can not be observed using the contour plot of 2D NOESY.

Key words: NMR, interaction, NOEY, sodium dodecyl sulfate (SDS), polyacrylamide (PAM)

中图分类号:

O482.53

方晓雯1, 赵濉2, 袁汉珍1, 毛诗珍1, 俞稼镛2, 杜有如1*. 正十二烷基硫酸钠在聚丙烯酰胺溶液中聚集的¹H NMR研究[J]. 波谱学杂志.

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正十二烷基硫酸钠在聚丙烯酰胺溶液中聚集的¹H NMR研究

MICELLIZATION OF SODIUM DODECYL SULFATE IN POLYACRYLAMIDE AQUEOUS SOLUTION STUDIED BY ¹H NMR

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