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Control on self-assembly structures of rod-coil-rod
(PANI)-(PEG)-(PANI) triblock copolymer |
| YANG Zhifang, WU Jingao, YANG Yingkui, ZHOU Xingping, XIE Xiaolin |
| Department of Chemistry and Chemical Engineering, Huazhong University of Science and Technology |
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Abstract The self-assembly behaviors of the rod-coil-rod (PANI)98-(PEG)136-(PANI)98 triblock copolymer are investigated in different solvents, such as N-methyl-2-pyrrolidone (NMP), dimethyl formamide (DMF), ethanol and water. The effects of solvents, concentration and ultrasonic irradiation on self-assembly are discussed. The results indicate that the triblock copolymer forms particles, rods, fiber, networks and fiber bands in the above solvents, respectively. Especially, the triblock copolymer can form a multi-layer, tri-dimensional fibrous network and a petaline structure from the mono-layer fibrous network with the increase of its concentration in ethanol. Also, the ultrasonic irradiation has a great effect on the self-assembly of the triblock copolymer.
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Issue Date: 05 March 2008
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