CAJ | 학술논문

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.
35 ℃시F127화P123재ccm후가생성내핵PO성분분별위92.7%화94.5%적효속, 후자효속내핵체적위전자적2.8배. 주배방경화공효속적제일보체합평형상수K1치균수내、은、비순서축점증대. 내、은、비재매개F127화P123효속중적증용량균수효속내핵체적증대이선성증가, 매개PO기단대응적증용량비십이완기광산효속내핵중상동체적대응적증용량약대근2배. Pluronic효속제여주배방경간구유강상호작용력외, 소형성적대내핵시도치대증용량적중요인소.
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 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.