writer：Guoliang Li, Xinlin Yang*, Feng Bai
keywords：Polymer capsule; Hollow polymer microspheres; Pyidine group; Distillation precipitation polymerization
source：期刊
specific source：Polymer, 48 (11), 3074-3081 (2007). DOI: 10.1016/j.polymer.2007.03.066
Issue time：2007年
Poly(divinylbenzene) (PDVB) hollow microspheres with pyridyl group located on their interior surface were prepared by a facile route with the aid of the vinyl groups on the surface of poly(methacrylic acid) (PMAA) microspheres, which were incorporated through the hydrogen-bonding interaction between the carboxylic acid group and pyridyl group of 4-vinylpyridine (VPy). Poly(methacrylic acid)@polydivinylbenzene (PMAA@PDVB) coreeshell structure microspheres with PMAA as core and PDVB as shell were synthesized by a two-stage distillatione precipitation polymerization technique through the capture of the DVB monomer from solution of the reactive vinyl groups on pyridyl-functionalized
PMAA microspheres based on a seeded-nucleation mechanism during the second-stage polymerization. The PDVB hollow microspheres with different shell thicknesses were developed after the PMAA core particles were removed by selective dissolution under basic condition in ethanol, during which the pyridyl group was left on the interior surface of the shell layer in PDVB hollow microspheres. The resultant coreeshell and hollow microspheres were characterized by transmission electron microscopy (TEM), scanning electron microscopy (SEM), dynamic light scattering (DLS), Fourier transform infrared spectra (FT-IR) and elemental analysis.