Nanoprecipitation of PMMA Stabilized by Core Cross-Linked Star Polymers

来源：Macromolecular Chemistry and Physics, 2013, 214(10): 1158-1164.

DOI：10.1002/macp.201300234

• core cross-linked star polymers
• nanoprecipitation
• polymer particles

Nanoprecipitation of poly(methyl methacrylate) (PMMA) in the presence of water-soluble core cross-linked star (CCS) polymers is investigated. Slowly dropping water into DMF solutions containing PMMA and CCS polymers of varying compositions produces colloidally stable particles with CCS polymers being effectively incorporated. During the solvent-shifting process, CCS polymers migrate to and concentrate at the particle surface to stabilize the formed particles, which is confirmed by X-ray photoelectron spectroscopy, transmission electron microscopy, and contact angle measurements. This stabilizing effect is realized via the steric effect of the CCS polymers adsorbed at the particle surface.

• 出版日期2013-5-27
• 单位上海大学