Preparation of Monodisperse Large-Size Cross-Linked P (GMA-St-EGDMA) Microspheres by Two-Step Swelling Polymerization

摘要

Monodisperse large-size cross-linked P(GMA-St-EGDMA) microspheres were prepared by two-step swelling polymerization, P(GMA-St) microspheres as seeds. Effects of swelling conditions such as the kind and amount of swelling activation agent, temperature and EGDMA on the size and size distribution of the P(GMA-St-EGDMA) microspheres were investigated in detail. The morphology and properties were analyzed by optical microscopy, SEM and TGA. The results showed that monodisperse cross-linked P(GMA-St-EGDMA) micropheres with 14 μm could be successfully prepared.