| 带相反电荷高分子和表面活性剂复合物膜在空气/水界面上的特性 |
| |
| 引用本文： | 赵丰,杜玉扣,杨平,唐季安,李兴长.带相反电荷高分子和表面活性剂复合物膜在空气/水界面上的特性[J].高等学校化学学报,2005,26(2):281-284. |
| |
| 作者姓名： | 赵丰 杜玉扣 杨平 唐季安 李兴长 |
| |
| 作者单位： | 1. 苏州大学化学化工系,苏州 215006;
2. 中国科学院化学研究所胶体与界面科学国家重点实验室,北京 100080 |
| |
| 摘 要： | 利用原子力显微镜技术、表面压松弛法对带相反电荷高分子和表面活性剂在气/水界面形成的界面复合物膜进行了特性研究.原子力显微镜研究结果表明,部分水解聚丙烯酰胺(HPAM)/十六烷基三甲基溴化铵(CTAB)所形成的界面复合物膜呈现出“团”状聚集体形貌.两性聚丙烯酰胺与CTAB形成的界面复合物膜呈现出“纤维丝”的聚集体形貌.亚相中盐的存在对界面复合物的形貌有很大影响.表面压松弛实验则进一步表明界面复合物膜形貌结构的变化对其膜稳定性有直接的影响.
|
| 关 键 词： | 原子力显微镜 表面压松弛 界面复合物膜 膜稳定性 |
| 文章编号： | 0251-0790(2005)02-0281-04 |
| 收稿时间： | 2004-04-07 |
Special Properties of Oppositely Charged Polymer/Surfactant Composite Films on the Air/Water Interface |
| |
| ZHAO Feng,DU Yu-Kou,YANG Ping,TANG Ji-An,LI Xing-Chang.Special Properties of Oppositely Charged Polymer/Surfactant Composite Films on the Air/Water Interface[J].Chemical Research In Chinese Universities,2005,26(2):281-284. |
| |
| Authors: | ZHAO Feng DU Yu-Kou YANG Ping TANG Ji-An LI Xing-Chang |
| |
| Institution: | 1. Department of Chemistry and Chemical Engineering, Suzhou University, Suzhou 215006, China;
2. Key Laboratory of Colloid and Interface Science, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100080, China |
| |
| Abstract: | Atomic force microscopy(FAM) and the surface pressure relaxation technique were employed to characterize the properties of oppositely charged polymer/surfactant complex films formed on the air/water interface. By the observation of AFM, it is shown that partially hydrated polyacrylamide(HPAM)/hexadecyltrimethylammonium(CTAB) complex films appear in the morphology of patch aggregates. Amphoteric HPAM/CTAB complexes are observed to form filbrelike structures. Salts in the subphase have an impact on the morphology of interface complexes. Furthermore, the surface pressure relaxation revealed that the conformational changes of interface complexes are directly related to the stability of the films. |
| |
| Keywords: | Atomic force microscopy(FAM) Surface pressure relaxation Interface complex film Stability of film |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
| 点击此处可从《高等学校化学学报》浏览原始摘要信息 |
| 点击此处可从《高等学校化学学报》下载免费的PDF全文 |
