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Morphology of Films of SEBS Triblock Copolymers
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作者 HAN Xia(韩霞) +5 位作者 LIU honglai(刘洪来) DONG Yaming(董亚明) Hu Ying(胡英) 《Chinese Journal of Chemical Engineering》 SCIE EI CAS CSCD 2005年第4期498-503,共6页
Surface morphologies of the films of poly [styrene-b-(ethylene-co-butene)-b-styrene] (SEBS) have been studied by using tapping-mode atomic force microscopy (TM-AFM). The films of block copolymer were prepared bo... Surface morphologies of the films of poly [styrene-b-(ethylene-co-butene)-b-styrene] (SEBS) have been studied by using tapping-mode atomic force microscopy (TM-AFM). The films of block copolymer were prepared both by spin-coating on mica and by solvent-casting on different solution surfaces. For spin-coating samples, the effect of solution concentration, solvent, and annealing temperature are investigated. It is shown that changing the concentration of the solution makes no difference on the morphology of the film of the block copolymer. The microstructures are quite stable during thermal annealing; only the size of the domains changes toward the equilibrium configuration. However, solvent annealing can notably change the microstructures. When different selective solvents are used for film spin-coating, different morphologies can be obtained and explained by the different solubility parameters of the solvents. As expected, significant different morphologies in the top and the bottom surfaces of the casting films were observed. The images of the top surfaces reveal cylinder microdomains, while those of the bottom surfaces were spherical morphologies. 展开更多
关键词 atomic force microscopy (AFM) MORPHOLOGY block copolymer SPIN-COATING solvent-casting
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