Pluronic嵌段共聚物F127和P123胶束对萘、蒽、芘的增溶  

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

作　　者：郑玉婴[1] 江琳沁[2] 赵剑曦[2] 许秀枝[2] 

机构地区：[1]福州大学化工系 [2]福州大学化学系,福州350002

出　　处：《高等学校化学学报》2001年第4期617-621,共5页Chemical Journal of Chinese Universities

基　　金：福建省自然科学基金! (B9810 0 0 5 ) ;福建省高等学校科技项目! (K 2 0 0 2 2 );国家教育部留学回国人员科研启动基金资助

摘　　要：35℃时 F1 2 7和 P1 2 3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 F1 2 7和 P1 2 3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 。The solubilization of naphthalene, anthracene and pyrene, in both F127 and P123 aqueous micellar solutions has been characterized by UV method. 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 K 1 between solubilizate monomer and vacant micelle was thus obtained. It was found that the values of K 1 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.

关 键 词：Pluronic嵌段共聚物 胶速增溶 稠环芳烃化合物 萘 蒽 芘 F127 P123 聚氧乙烯 聚氧丙烯 

分 类 号：O648.1[理学—物理化学] O625.15[理学—化学]