Rod-coil型嵌段共聚物(PANI)_(98)-(PEG)_(136)-(PANI)_(98)自组装的结构调控

Control on self-assembly structures of rod-coil(PANI)_(98)-(PEG)_(136)-(PANI)_(98) triblock copolymers

研究了(PANI)98-(PEG)136-(PANI)98三嵌段共聚物在N-甲基吡咯烷酮(NMP)、DMF、乙醇和水等选择性溶剂中的自组装行为,以及溶剂、溶液浓度和超声波作用等对其自组装行为的结构调控。结果表明,(PANI)98-(PEG)136-(PANI)98在NMP、DMF、乙醇和水中自组装形成了球形、棒状、网状和纤维带状结构;在乙醇溶剂中,随着(PANI)98-(PEG)136-(PANI)98浓度的提高,自组装形成的网状结构由单层变为多层、立体网状结构和花瓣结构。超声波作用对(PANI)98-(PEG)136-(PANI)98自组装有序结构的形成有明显影响。

The self-assembly behaviors of （PANI）98-（PEG）as6-（PANI）98 triblock copolymer were mvestigateted different selective solvents, such as NMP, DMF, ethanol and water. The effects of the selective solvents, solution concentration and ultrasonic on self-assembly were discussed. The results indicated that the triblock copolymer respectively forms particles, rods,fiber networks and fiber bands in the above solvents. Especially,with increasing the solution concentration in ethanol, the triblock copolymer can form multi-layer, tri-dimensional fibrous network,and petaline structure from the mono-layer fibrous network. And the ultrasonic has an obvious effect on self-assembly of the triblock copolymer.