摘要
Self assembly of an amphiphilic diblock copolymer polysyrene b polyvinylbenzoic acid in ethanol,which is a selective solvent for the polybenzoic acid segment was studied by means of transmission electron microscopy.The diblock copolymers can self assemble into nano scale aggregates with polystyrene segment as the core and polyvinylbenzoic acid segment as the corona.The morphology of the aggregates is mainly controlled by the ratio of the two segment of the diblock copolymer.As the content of the ethanol insoluble polystyrene segment increased,the morphology can be changed from spheres to rods.The diameter of the aggregates increases slightly with concentration and decreases with the addition of CoCl 2 salt.
Self-assembly of an amphiphilic diblock copolymer polysyrene-b-polyvinylbenzoic acid in ethanol, which is a selective solvent for the polybenzoic acid segment was studied by means of transmission electron microscopy. The diblock copolymers can self-assemble into nano scale aggregates with polystyrene segment as the core and polyvinylbenzoic acid segment as the corona. The morphology of the aggregates is mainly controlled by the ratio of the two segment of the diblock copolymer. As the content of the ethanol-insoluble polystyrene segment increased, the morphology can be changed from spheres to rods. The diameter of the aggregates increases slightly with concentration and decreases with the addition,of CoCl2 salt.
出处
《高分子学报》
SCIE
CAS
CSCD
北大核心
2002年第4期548-551,共4页
Acta Polymerica Sinica
基金
国家自然科学基金项目 (基金号 5 0 0 0 3 0 0 1)
教育部博士点研究基金项目 (项目号 990 0 0 13 1)
