苯酚对Pluronic嵌段共聚物F127胶束化以及胶束增溶蒽的影响  

Effect of Phenol on Micellization of Pluronic Block Copolymer F127 and Solubilization of Anthracene in the Micelle

作　　者：江琳沁[1] 郑玉婴[2] 赵剑曦[1] 

机构地区：[1]福州大学化学系,福建福州350002 [2]福州大学化学工程系,福建福州350002

出　　处：《精细化工》2001年第12期731-735,共5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

摘　　要：通过紫外 -可见光谱、荧光光谱和黏度等技术测定在苯酚存在下 ,Pluronic嵌段共聚物F12 7水溶液的临界胶束浓度 (CMC)以及胶束结构的变化 ,考察苯酚浓度cph对胶束增溶蒽的影响。实验结果发现F12 7的CMC随cph的增高先增大 ,在cph>3 0× 10 -6 后减小 ,胶束特性黏度[η]则先减小再增大 ,胶束内核中PO成分逐渐增大 ,在cph>3 0× 10 -6 后胶束内核几乎完全由PO构成。蒽与胶束的K1/N值先急剧下降 ,同样在cph>3 0× 10 -6 后转而逐渐增大。结合苯酚对水结构的影响 ,以及与PEO嵌段上醚氧原子的氢键相互作用解释了上述实验现象。The critical micelle concentration (CMC) of Pluronic block copolymer F127 in aqueous, solutions and the micellar structure are determined by UV and fluorescence spectroscopy as well as viscosity technology in the presence of phenol. The results show that the CMC is enhanced with increasing phenol concentration (cph) at initial stage and reaches a maximum at cph = 30 × 10-6. The intrinsic viscosity [η] displays opposite trend of decrease with initial addition of phenol and then increases at cph > 30 × 10-6. The PO component in the micellar core is gradually increased when phenol is added and reaches 100% at cph > 30 × 10-6. The value of K1/N on interaction between anthracene and the micelle appears a decrease with initial addition of phenol and then gradually increases at cph > 30 × 10-6. The results are interpreted according to phenol promoting the formation of water structure and bonding of phenol hydrogen to PEO block.

关 键 词：Pluronic嵌段共聚物 苯酚 胶束结构 胶束增溶 表面活性剂 

分 类 号：O632.12[理学—高分子化学] TQ423[理学—化学]