Narrowly dispersed micrometer-sized composite spheres based on diazonium–polystyrene

摘要: Diazonium group–substituted polystyrene (PS–N) micrometer-sized spheres with narrow distribution were prepared from highly crosslinked particles. Then a composite sphere was the micro-PS–N as core and submicrometer-sized poly(styrene-methyl methacrylate-acrylic acid) [P(S-MMA-AA)] colloids or nanometer-sized SiO2 particles shell via columbic interaction. The ionic linkages between convert to covalent bonds in thermal treatment process. As result, becomes very stable toward polar solvents well ultrasonic treatment. A hollow then achieved by removing under sintering conditions (700 °C). © 2004 Wiley Periodicals, Inc. J Polym Sci Part A: Chem 42: 4284–4288,