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中文摘要：
采用无皂乳液聚合及种子无皂乳液聚合方法制备了200-800nm四种不同尺寸的单分散PMMA/GMA／DVB（PMGD）复合微球．用扫描电镜（SEM）和动态光散射（DLS）对粒径尺寸、形貌进行了表征．实验发现单体滴加速度是影响种子无皂乳液聚合过程二次成核的关键因素．用乙二胺对微球表面的环氧基团开环后，通过在微球表面接枝树枝状PAMAM（d-PAMAM）达到微球表面的官能化的目的，元素分析和红外光谱实验证明了微球表面d-PAMAM的存在．最后利用微球表面的活性氨基与四甲基异硫氰酸罗丹明（TRITC）反应，得到四种尺寸的水分散性的红色荧光微球．
英文摘要：
Mono-dispersed PMMA/GMA/DVB （PMGD） microspheres with size ranging from 200 to 800 nm were synthesized by soap-free emulsion polymerization and seeded soap-free emulsion polymerization. The as-prepared microspheres were aminated by ethylenediamine. Afterwards, different generations of dendritic PAMAM were grafted onto the surface of the microspheres by repeated Michael additions and amina- tion reactions, at last different-sized water-dispersible microspheres with red fluorescence could be prepared by covalently coupling tetramethyl rhodamine isothiocyanate. Scanning electron microscopy and dynamic light scattering showed that the microspheres were very uniform. Fourier transform-infrared spectroscopy and elemental analysis demonstrated that the dendritic PAMAM had been successfully grafted onto the surface of the microspheres.
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