| 摘要 |
The invention relates to a method for preparing polymeric particle consisting in (a) preparing a multiple water/oil/water emulsion such as: an internal aqueous phase possibly containing at least one active hydrophilic material; organic phase comprising at least one type of main monomer and/ or at least one type of crosslinking monomer, possibly at least one type of co-monomer and a hydrophobic bloc and/ or a tribloc amphiphilic polymer whose end blocs are embodied in the form of hydrophobic blocs and/or at least one type of polyalcoxylate non-ionic surface-active agent; an external aqueous phase comprising at least one type of surface-active agent and/or at least one type of amphilic polymer; and a multiple emulsion which can comprise at least one type of polymerisation catalyst. The inventive method also consists in (b) applying polymerisation conditions of basic monomer(s) and/or crosslinking monomer(s), and, when necessary of copolymer(s) and catalyst(s). Said invention also relates to particles which are produced by said method and provided with closed surfaces and internal non-communicating cells and to the use thereof. |
