摘要
PluronicF6 8嵌段共聚物在 5 0℃的水溶液中可形成外壳良好水化的胶束 ,其内核组成中PO和EO的质量分数分别为 80 %和 2 0 %。该胶束和稠环芳烃的结合能力顺序为芘 >蒽 >萘。三者在F6 8胶束和水相间的分配系数KV 分别为 8 74× 10 2 (芘 )、7 94× 10 2 (蒽 )和 2 5 4× 10 2(萘 )。
Pluronic F68 is a poly(ethylene oxide)-poly(propylene oxide)-poly(ethylene oxide) triblock copolymer (indicated as (EO)x-(PO)y-(EO)x with x=76 and y=29).Experimental results showed that F68 formed micelle at 50 ℃.The micellar core consisted of 80% PO and 20% EO components.The hydrophilic PEO blocks extended into the surrounding aqueous solvent,forming a “corona” around the core.The intrinsic viscosity of F68 micelle at 50 ℃ was determined to be 11 6 cm 3·g -1 and the weight of hydrating water per g of solute was 3 6 g.Solubilization of naphthalene,anthracene and pyrene in F68 aqueous micellar solutions at 50 ℃ was investigated by UV-spectra measurements.The results showed that the partition coefficients ( K V) of naphthalene,anthracene and pyrene between the micelle and water were 2 54×10 2,7 94×10 2 and 8 74×10 2 respectively.
出处
《精细化工》
EI
CAS
CSCD
北大核心
2001年第7期373-375,390,共4页
Fine Chemicals
基金
福建省高校科技项目 (K2 0 0 2 2 )
国家教委留学回国人员科研启动基金资助
