甲基橙为光谱探针研究聚电解质与表面活性剂相互作用

doi:10.7517/j.issn.1674-0475.1999.04.347

影像科学与光化学 ›› 1999, Vol. 17 ›› Issue (4): 347-351.DOI: 10.7517/j.issn.1674-0475.1999.04.347

甲基橙为光谱探针研究聚电解质与表面活性剂相互作用

孟智勇, 郑晓亮, 曹维孝

北京大学化学与分子工程学院, 北京100871

收稿日期:1998-11-16 修回日期:1999-03-25 出版日期:1999-11-20 发布日期:1999-11-20
通讯作者: 曹维孝
基金资助:
国家自然科学基金资助项目(批准号:59633110,29774001)

INTERACTION OF POLYELECTROLYTE AND SURFACTANT INVESTIGATED WITH METHYL ORANGE AS SPECTRAL PROBE

MENG Zhiyong, ZHENG Xiaolian, CAO Weixiao

College of Chemistry and Molecular Eingineering, Peking University, Beijing 100871. P. R. China

Received:1998-11-16 Revised:1999-03-25 Online:1999-11-20 Published:1999-11-20

摘要/Abstract

摘要： 聚电解质与两亲分子间相互作用近年备受关注^[1,2].其原因之一是这种作用与作为形成生物膜基础的类脂间的相互作用极其相似,并可看作细胞中蛋白质-核酸相互作用的一种模式^[3].对众多水溶性高分子尤其是聚电解质与表面活性剂间相互作用研究表明,这种作用不仅有重要的学术意义,而且在实际应用方面也非常重要,如应用于泥浆凝聚,油井采油以及膜分离技术^[4]等.

关键词: 聚电解质, 表面活性剂, 疏水微区, 光谱探针

Abstract: The interactions of sulfonated polystyrene (SPS) and cetyl trimethylammonium bromide (CTAB) have been investigated with methyl orange (MO) as spectral probe. The increasing of the solution viscosity is related closely with the presence of hydrophobic domain, which forms through the interaction between the polymer chains and CTAB molecules. The viscosity of the solution reaches two maximums at the molar ratio of CTAB:SPS [-SO₃Na unit]=～0.5 and ～1.5, which are consistent well with two hydrophobic domains appearing in solution at the same ratios. In the case of higher concentration of SPS(>0.04 mol/L), at a specific ratio of CTAB/SPS, the solution will convert to a gel due to crosslinking formed from the aggregation of CTAB molecules in micelles with SPS polymer chains.

Key words: polyelectrolyte, surfactant, hydrophobic domain, spectral probe

孟智勇, 郑晓亮, 曹维孝. 甲基橙为光谱探针研究聚电解质与表面活性剂相互作用[J]. 影像科学与光化学, 1999, 17(4): 347-351.

MENG Zhiyong, ZHENG Xiaolian, CAO Weixiao. INTERACTION OF POLYELECTROLYTE AND SURFACTANT INVESTIGATED WITH METHYL ORANGE AS SPECTRAL PROBE[J]. Imaging Science and Photochemistry, 1999, 17(4): 347-351.

参考文献

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甲基橙为光谱探针研究聚电解质与表面活性剂相互作用

INTERACTION OF POLYELECTROLYTE AND SURFACTANT INVESTIGATED WITH METHYL ORANGE AS SPECTRAL PROBE

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