Alternating Silica/Polymer Multilayer Hybrid Microspheres Templates for Double-shelled Polymer and Inorganic Hollow Microstructures

作者：Li Guoliang; Shi Qin; Yuan S J; Neoh K G; Kang E T^*; Yang Xinlin

来源：Chemistry of Materials, 2010, 22(4): 1309-1317.

DOI：10.1021/cm903501e

Alternating silica/polymer tetra- and penta-layer hybrid microspheres were first prepared via combined inorganic sol-gel reaction and distillation-precipitation polymerization, pH-responsive poly(methacrylic acid) (PMAA) hollow microspheres with asymmetric double-shells were produced after HF etching of the silica layers in the SiO(2)/PMAA tetra-layer microspheres with different degrees of cross-linking in the two PMAA layers. On the other hand, silica "core-double shell" hollow microspheres were obtained by calcination of the alternating silica/PMAA penta-layer microspheres. The resulting hollow polymer and silica microspheres with hierarchical structures were characterized by field-emission scanning electron microscopy (FESEM), transmission electron microscopy (TEM), energy-dispersive X-ray (EDX) analysis, dynamic laser scattering (DLS), and confocal laser scanning microscopy (CLSM) measurements.

• 出版日期2010-2-23
• 单位南开大学