Raspberry-like aggregates containing secondary nanospheres of poly styrene-block-poly(4-vinylpyridine) micelles
writer：Jiang, Xiaowei; Wang, Yao; Zhang, Wangqing; 等.
keywords：block copolymers
source：期刊
specific source：MACROMOLECULAR RAPID COMMUNICATIONS
Issue time：2006年
onlinelibrary.wiley.com/doi/10.1002/marc.200600481/abstract
Raspberry-like aggregates containing secondary nanospheres were studied. The formation of raspberry-like aggregates was due to complexation between core-shell microspheres and core-corona micelles. The core-shell microspheres were synthesized with soap-free polymerization of styrene and methyl acrylic acid, which included carboxyl groups in the periphery. The micelles were self-assembled by polystyrene-block-poly(4-vinylpyridine), which contained pyridine groups in the corona. The driven force to form raspberry-like aggregates was due to the affinity between the carboxyl and pyridine groups. The morphology of the raspberry-like aggregates could be tuned by changing the ratio of the microspheres to micelles. IR measurements suggested that the raspberry-like aggregates were like zwitterions.