copolymer micelle in a sentence

1. Because of these differences in the building blocks, some block copolymer micelles behave like surfactant ones, while others don't.
2. Two mechanisms were proposed for the sphere-to-rod transitions of block copolymer micelles, in which the micellar growth can occur by ( A ) fusion / fragmentation of micelles or ( B ) concomitant fusion / fragmentation of micelles and unimer exchange, followed by smoothing of the rod-like structures.
3. It's difficult to find copolymer micelle in a sentence.