Pluronic嵌段共聚物F127和P123胶束对萘、蒽、芘的增溶

高等学校化学学报 ›› 2001, Vol. 22 ›› Issue (4): 617.

Pluronic嵌段共聚物F127和P123胶束对萘、蒽、芘的增溶

郑玉婴¹, 江琳沁², 赵剑曦², 许秀枝²

1. 福州大学化工系;
2. 福州大学化学系, 福州 350002

收稿日期:2000-03-29 出版日期:2001-04-24 发布日期:2001-04-24
通讯作者: 赵剑曦(1953年出生),男,博士,教授,从事胶体与界面科学研究.E-mail:jxzhao.colloid@fzu.edu.cn E-mail:jxzhao.colloid@fzu.edu.cn
基金资助:
福建省自然科学基金(B9810005);福建省高等学校科技项目(K20022);国家教育部留学回国人员科研启动基金资助

Solubilization of Polycyclic Aromatic Hydrocarbons in F127 and P123 Aqueous Micellar Solutions

ZHENG Yu-Ying¹, JIANG Lin-Qin², ZHAO Jian-Xi², XU Xiu-Zhi²

1. Department of Chemical Engineering, Fuzhou University;
2. Department of Chemistry, Fuzhou University, Fuzhou 350002, China

Received:2000-03-29 Online:2001-04-24 Published:2001-04-24

摘要/Abstract

摘要： 35℃时F127和P123在ccm后可生成内核PO成分分别为92.7%和94.5%的胶束,后者胶束内核体积为前者的2.8倍.稠环芳烃和空胶束的第一步缔合平衡常数K₁值均随萘、蒽、芘顺序逐渐增大.萘、蒽、芘在每个F127和P123胶束中的增溶量均随胶束内核体积增大而线性增加,每个PO基团对应的增溶量比十二烷基磺酸胶束内核中相同体积对应的增溶量约大近2倍.Pluronic胶束除与稠环芳烃间具有强相互作用力外,所形成的大内核是导致大增溶量的重要因素.

关键词: Pluronic嵌段共聚物, 胶束增溶, 稠环芳烃化合物

Abstract: The solubilization of naphthalene, anthracene and pyrene, in both F127 and P123 aqueous micellar solutions has been characterized by UVmethod. These aromatic hydrocarbons were confirmed to incorporate in the micellar cores. The model of stepwise association equilibrium was used to analyze the experimental results and the first stepwise association constant K₁ between solubilizate monomer and vacant micelle was thus obtained. It was found that the values of K₁ increased with increasing the benzene cycle number of the aromatic hydrocarbons. The average number of solubilizating molecules corresponding to each PO-group in the mcellar cores was verified to be consistency for both F127 and P123 This result suggests that the volume of the micellar core is an important factor to determine the amount of aromatics incorporating into Pluronic micelles. The amount was lineally enhanced with increasing the volume of the micellar core. The stability in planar ring of the molecule of polycyclic aromatic hydrocarbon also affected its solubilization. It was shown by the solubilization isotherms that anthracene and pyrene have a higher efficiency in solubilization compared with naphthalene.

Key words: Pluronic block copolymer, Micellar solubilization, Polycyclic aromatic hydrocarbons

中图分类号:

O648

TrendMD:

郑玉婴, 江琳沁, 赵剑曦, 许秀枝. Pluronic嵌段共聚物F127和P123胶束对萘、蒽、芘的增溶. 高等学校化学学报, 2001, 22(4): 617.

ZHENG Yu-Ying, JIANG Lin-Qin, ZHAO Jian-Xi, XU Xiu-Zhi . Solubilization of Polycyclic Aromatic Hydrocarbons in F127 and P123 Aqueous Micellar Solutions. Chem. J. Chinese Universities, 2001, 22(4): 617.