窄分布两亲性嵌段共聚物的合成及其胶束化行为研究

Synthesis of Amphiphilic Block Copolymer Poly(styrene-b-acrylic acid) by Atom Transfer Radical Polymerization and Its Micellization

利用原子转移自由基聚合合成了具有两亲性的嵌段聚合物聚苯乙烯 -b-聚丙烯酸 ( PS-b-PAA) ,用FTIR,1 H NMR,SEC对其进行了表征 ,并利用荧光探针技术研究了其在水溶液中的胶束化行为 .进一步的研究表明 。

Amphiphilic block copolymers of PS b PAA with a low polydispersity have been synthesized by atom transfer radical polymerization (ATRP) and characterized by FTIR, 1H NMR and SEC. The micellization of PS b PAA in water have been monitored by fluorescent probe technique. It was found that pyrene as a fused ring aromatic hydrocarbon(PAH) can be absorbed and further separated and recovered from water by using the PS b PAA micelles. The results showed that the equilibrium loading of pyrene apparently depends on the length of the hydrophilic block and the concentration of the micelles. This work, therefore, displays a potential use of the micelles in the purification of waste water contaminated by aromatic compounds.