| 两亲性阴离子HBPN与阳离子表面活性剂CTAB络合机理的研究 |
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| 引用本文： | 马荣久,吴奇.两亲性阴离子HBPN与阳离子表面活性剂CTAB络合机理的研究[J].高等学校化学学报,1998,19(2):318-321. |
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| 作者姓名： | 马荣久 吴奇 |
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| 作者单位： | 1. 吉林大学化学系, 长春, 130023;
2. 香港中文大学化学系, 香港 |
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| 基金项目： | 国家自然科学基金,国家教委博士点基金 |
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| 摘 要： | 用动态光散射研究了两亲性阴离子HBPN(高度枝化的聚酯纳米微粒)和阳离子表面活性剂CTAB(十六烷基三甲基溴化铵)在缓冲液中的相互作用及HBPN/CTAB络合物的形成.结果表明:在静电作用下,于碱性溶剂中,HBPN与由CTAB分子所构成的胶束形成了核壳结构络合物HBPN/CTAB.络合物粒径的大小和稳定性可以通过溶液的pH值和CTAB浓度来控制.
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| 关 键 词： | 纳米微粒 电解质/表面活性剂相互作用 光散射 络合机理 |
| 收稿时间： | 1996-12-05 |
Mechanism Studies of Complex Formation Between an Amphiprotic Anion(HBPN)and a Cationic Surfactant(CTAB) |
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| MA Rong-Jiu,WU Chi.Mechanism Studies of Complex Formation Between an Amphiprotic Anion(HBPN)and a Cationic Surfactant(CTAB)[J].Chemical Research In Chinese Universities,1998,19(2):318-321. |
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| Authors: | MA Rong-Jiu WU Chi |
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| Institution: | 1. Department of Chemistry, Jilin University, Changchun, 130023;
2. Department of Chemistry, University of Hong Kong, Hong Kong |
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| Abstract: | The interactions between an amphiprotic anion HBPN (highly branched polyester nanoparticle) and a cationic surfactant CTAB (cetyltrimethylammonium bromide) in buffer and HBPN/CTAB complex formation were investigated by dynamic laser light scattering. The results indicated that the core/shell structure HBPN/CTAB complexes were formed by positively charged HBPN and oppositely charged CTAB micelles, which were made from CTAB molecules at first, due to the static electricity interaction in alkaline solution. The complex size can be controlled by solution pH value and CTAB concentration. |
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| Keywords: | Nanoparticles Surfactant/polyelectrolytes interaction Dynamic light scattering Complexing mechanism |
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