Chen Kaimin, Zhu Yan, Li Li, Lu Yan, Guo Xuhong
State Key Laboratory of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, PR China.
Macromol Rapid Commun. 2010 Aug 17;31(16):1440-3. doi: 10.1002/marc.201000195. Epub 2010 Jun 22.
Spherical polyelectrolyte brushes consisting of a magnetite/polystyrene nanocomposite core and a poly(acrylic acid) brush shell were prepared by photo-emulsion polymerization. They are narrowly dispersed, superparamagnetic and redispersible after aggregating by external magnetic field, as determined by transmission electron microscopy, dynamic light scattering, thermal gravimetric analysis and a vibrating sample magnetometer. Magnetic control is thus introduced into nano-sized spherical polyelectrolyte brushes to achieve recovery and controllable delivery in applications. This approach opens up the way for cost-effective applications of spherical polyelectrolyte brushes.
通过光乳液聚合制备了由磁铁矿/聚苯乙烯纳米复合核和聚（丙烯酸）刷壳组成的球形聚电解质刷。通过透射电子显微镜、动态光散射、热重分析和振动样品磁强计测定，它们在通过外部磁场聚集后具有窄分散性、超顺磁性和可再分散性。因此，将磁控引入纳米级球形聚电解质刷中，以在应用中实现回收和可控递送。这种方法为球形聚电解质刷的经济高效应用开辟了道路。
