采用荧光光谱法研究了苯乙烯—氧乙烯两亲接枝共聚物 (PS-g -PEO)在选择性溶剂甲苯中的性质 .研究发现两亲接枝共聚物在选择性溶剂中可以形成胶束 .而胶束的形成受浓度、温度以及两亲接枝共聚物结构等因素的影响 .温度越高 ,形成胶束的临界胶束浓度 (CMC)值越小 ;分子中接枝链越短 ,其CMC值也越小 ;PEO含量越大则CMC值越小 ;而当PS -g-PEO共聚物分子量越小时其CMC值越小 ,胶束也越稳定 The properties of styrene-oxyethylene amphiphilic graft copolymers (PS-g-PEO) in toluene as a selective solvent were studied by fluorescence spectroscopy. It was found that amphiphilic graft copolymers could form micelles in selective solvents While the formation of micelles is affected by the concentration, temperature and amphiphilic graft copolymer structure.The higher the temperature, the smaller the micelle concentration (CMC) The CMC value is also smaller; the larger the PEO content, the smaller the CMC value; while the smaller the molecular weight of the PS-g-PEO copolymer, the smaller the CMC value, the more stable the micelles